METHODS AND COMPOSITIONS FOR INHIBITING NEOPLASTIC CELL GROWTH

Abstract: The present invention concerns methods and compositions for inhibiting neoplastic cell growth. In particular, the present invention concerns antitumor compositions and methods for the treatment of tumors. The invention further concerns screening methods for identifying growth inhibitory, e.g., antitumor compounds. The present invention is directed to novel polypeptides and to nucleic acid molecules encoding those polypeptides. Also provided herein are vectors and host cells comprising those nucleic acid sequences, chimeric polypeptide molecules comprising the polypeptides of the present invention fused to heterologous polypeptide sequences, antibodies which bind to the polypeptides of the present invention and to methods for producing the polypeptides of the present invention.

Description: METHODS AND COMPOSITIONS FOR INHIBITING NEOPLASTIC CELL GROWTH FIELD OF THE INVENTION The present invention concerns methods and compositions for inhibiting neoplastic cell growth In particular, the present invention concerns antitumor compositions and methods for the treatment of tumors The invention further concerns screening methods for identifying growth inhibitory, e antitumor compounds BACKGROUND OF THE INVENTION Malignant tumors (cancers) are the second leading cause of death in the United States, after heart disease (Boring et al , CA Cancel J Clin . 43 7 ( 1 93)) Cancer is characterized by the increase in the number of abnormal, or neoplastic, cells derived from a normal tissue which proliferate to form a tumor mass, the invasion of adjacent tissues by these neoplastic tumor cells, and the generation of malignant cells which eventually spread via the blood or lymphatic system to regional lymph nodes and to distant sites (metastasis) In a cancerous state a cell proliferates under conditions in which normal cells would not grow Cancer manifests itself in a wide variety ot forms, characterized by different degrees of invasiveness and aggressiveness Despite recent advances in cancer therapy, there is a great need for new therapeutic agents capable of inhibiting neoplastic cell growth Accordingly, it is the objective of the present invention to identify compounds capable of inhibiting the growth of neoplastic cells, such as cancer cells SUMMARY OF THE INVENTION A Embodiments The present invention relates to methods and compositions for inhibiting neoplastic cell growth More particularly, the invention concerns methods and compositions for the treatment of tumors, including cancers, such as breast, prostate, colon, lung, ovarian, renal and CNS cancers, leukemia, melanoma, etc , in mammalian patients, preferably humans In one aspect, the present invention concerns compositions of matter useful for the inhibition of neoplastic cell growth comprising an effective amount of a PRO polypeptide as herein defined, or an agonist thereof, in admixture with a pharmaceutically acceptable carrier In a preferred embodiment, the composition of matter comprises a growth inhibitory amount of a PRO polypeptide, or an agonist thereof In another preferred embodiment, the composition comprises a cytotoxic amount of a PRO polypeptide, or an agonist thereof Optionally, the compositions of matter may contain one or more additional growth inhibitory and/or cytotoxic and/or other chemotherapeutic agents In a further aspect, the present invention concerns compositions ot matter useful tor the treatment of a tumor in a mammal comprising a therapeutically effective amount of a PRO polypeptide as herein defined or an agonist thereof The tumor is preferably a cancer In another aspect, the invention concerns a method for inhibiting the growth ot a tumor cell comprising exposing the cell to an effective amount of a PRO polypeptide as herein defined or an agonist thereof In a particular embodiment, the agonist is an anti-PRO agonist antibody In another embodiment, the agonist is a small molecule that mimics the biological activity of a PRO polypeptide The method or in vivo In a still further embodiment, the invention concerns an article of manufacture comprising (a) a container, (b) a composition comprising an active agent contained within the container wherein the composition is effective tor inhibiting the neoplastic cell growth, e g growth ot tumor cells, and the active agent in the composition is a PRO polypeptide as herein defined, or an agonist thereof, and (c) a label affixed to said container, or a package insert included in said container referring to the use of said PRO polypeptide or agonist thereof, for the inhibition ot neoplastic cell growth wherein the agonist may be an antibody which binds to the PRO polypeptide In a particular embodiment, the agonist is an anti-PRO agonist antibody In another embodiment, the agonist is a small molecule that mimics the biological activity of a PRO polypeptide Similar articles of manufacture comprising a PRO polypeptide as herein defined, or an agonist thereof in an amount that is therapeutically effective for the treatment of tumor are also within the scope of the present invention Also within the scope of the invention are articles of manufacture comprising a PRO polypeptide as herein defined, or an agonist thereof, and a further growth inhibitory agent, cytotoxic agent or chemotherapeutic agent B Additional Embodiments In other embodiments of the present invention, the invention provides an isolated nucleic acid molecule comprising a nucleotide sequence that encodes a PRO polypeptide In one aspect, the isolated nucleic acid molecule comprises a nucleotide sequence having at least about 80% nucleic acid sequence identity, alternatively at least about 81 % nucleic acid sequence identity, alternatively at least about 82% nucleic acid sequence identity, alternatively at least about 83% nucleic acid sequence identity, alternatively at least about 84% nucleic acid sequence identity, alternatively at least about 85% nucleic acid sequence identity, alternatively at least about 86% nucleic acid sequence identity, alternatively at least about 87% nucleic acid sequence identity, alternatively at least about 88% nucleic acid sequence identity, alternatively at least about 89% nucleic acid sequence identity, alternatively at least about 907c nucleic acid sequence identity alternatively at least about 91 % nucleic acid sequence identity, alternatively at least about 92% nucleic acid sequence identity, alternatively at least about 93% nucleic acid sequence identity, alternatively at least about 94% nucleic acid sequence identity, alternatively at least about 95% nucleic acid sequence identity , alternatively at least about 96% nucleic acid sequence identity, alternatively at least about 97% nucleic acid sequence identity, 9 alternatively at least about 98% nucleic acid sequence identity and alternatively at least about 99% nucleic acid sequence identity to (a) a DNA molecule encoding a PRO polypeptide having a full-length amino acid sequence as disclosed herein, an amino acid sequence lacking the signal peptide as disclosed herein, an extracellular domain of a transmembrane protein, with or without the signal peptide, as disclosed herein or any other specifically defined fragment of the full-length amino acid sequence as disclosed herein, or (b) the complement of the DNA molecule of (a). In other aspects, the isolated nucleic acid molecule comprises a nucleotide sequence having at least about 80% nucleic acid sequence identity, alternatively at least about 81 % nucleic acid sequence identity, alternatively at least about 82% nucleic acid sequence identity, alternatively at least about 837c nucleic acid sequence identity, alternatively at least about 84% nucleic acid sequence identity, alternatively at least about 85% nucleic acid sequence identity, alternatively at least about 867c nucleic acid sequence identity, alternatively at least about 877c nucleic acid sequence identity, alternatively at least about 887c nucleic acid sequence identity, alternatively at least about 897c nucleic acid sequence identity, alternatively at least about 90% nucleic acid sequence identity, alternatively at least about 91 % nucleic acid sequence identity, alternatively at least about 92% nucleic acid sequence identity, alternatively at least about 937c nucleic acid sequence identity, alternatively at least about 947c nucleic acid sequence identity, alternatively at least about 957c nucleic acid sequence identity, alternatively at least about 96% nucleic acid sequence identity, alternatively at least about 977c nucleic acid sequence identity, alternatively at least about 98% nucleic acid sequence identity and alternatively at least about 99% nucleic acid sequence identity to (a) a DNA molecule comprising the coding sequence of a full-length PRO polypeptide cDNA as disclosed herein, the coding sequence of a PRO polypeptide lacking the signal peptide as disclosed herein, the coding sequence of an extracellular domain of a transmembrane PRO polypeptide, with or without the signal peptide, as disclosed herein or the coding sequence of any other specifically defined fragment of the full-length amino acid sequence as disclosed herein, or (b) the complement of the DNA molecule of (a). In a further aspect, the invention concerns an isolated nucleic acid molecule comprising a nucleotide sequence having at least about 80% nucleic acid sequence identity, alternatively at least about 817c nucleic acid sequence identity, alternatively at least about 82% nucleic acid sequence identity, alternatively at least about 83% nucleic acid sequence identity, alternatively at least about 84% nucleic acid sequence identity, alternatively at least about 85% nucleic acid sequence identity, alternatively at least about 86 nucleic acid sequence identity, alternatively at least about 87% nucleic acid sequence identity, alternatively at least about 88% nucleic acid sequence identity, alternatively at least about 89% nucleic acid sequence identity, alternatively at least about 90% nucleic acid sequence identity, alternatively at least about 91 % nucleic acid sequence identity, alternatively at least about 92% nucleic acid sequence identity, alternatively at least about 937c nucleic acid sequence identity, alternatively at least about 94% nucleic acid sequence identity, alternatively at least about 95% nucleic acid sequence identity, alternatively at least about 967ό nucleic acid sequence identity, alternatively at least about 977c nucleic acid sequence identity, alternatively at least about 98% nucleic acid sequence identity and alternatively at least about 99% nucleic acid sequence identity to (a) a DNA molecule that encodes the same mature polypeptide encoded by any of the human protein cDNAs deposited with the ATCC as disclosed herein, or (b) the complement of the DNA molecule of (a). Another aspect of the invention provides an isolated nucleic acid molecule comprising a nucleotide sequence encoding a PRO polypeptide which is either transmembrane domain-deleted or transmembrane domain-inactivated, or is complementary to such encoding nucleotide sequence w herein the transmembrane domaιn(s) ot such polypeptides are disclosed herein Therefore soluble extracellular domains of the herein described PRO polypeptides are contemplated Another embodiment is directed to fragments of a PRO polypeptide coding sequence, or the complement thereof, that may find use as, tor example, hybridization probes for encoding fragments of a PRO polypeptide that may optionally encode a polypeptide comprising a binding site for an anti PRO antibody or as antisense oligonucleotide probes Such nucleic acid fragments are usually at least about 20 nucleotides in length alternatively at least about 30 nucleotides in length alternatively at least about 40 nucleotides in length alternatneh at least about 50 nucleotides in length, alternatively at least about 60 nucleotides in length alternatively at least about 70 nucleotides in length, alternatively at least about 80 nucleotides in length alternatively at least about 90 nucleotides in length, alternatively at least about 100 nucleotides in length, alternatively at least about 1 10 nucleotides in length alternatively at least about 120 nucleotides in length alternatively at least about 130 nucleotides in length alternatively at least about 140 nucleotides in length alternatively at least about 150 nucleotides in length alternatively at least about 160 nucleotides in length alternatively at least about 170 nucleotides in length alternatively at least about 180 nucleotides in length, alternatively at least about 190 nucleotides in length, alternatively at least about 200 nucleotides in length, alternatively at least about 250 nucleotides in length, alternatively at least about 300 nucleotides in length, alternatively at least about 350 nucleotides in length, alternatively at least about 400 nucleotides in length, alternatively at least about 450 nucleotides in length alternatively at least about 500 nucleotides in length, alternatively at least about 600 nucleotides in length, alternatively at least about 700 nucleotides in length, alternatively at least about 800 nucleotides in length, alternatively at least about 900 nucleotides in length and alternatively at least about 1000 nucleotides in length wherein in this context the term "about" means the referenced nucleotide sequence length plus or minus 10% of that referenced length It is noted that novel fragments of a PRO polypeptide-encoding nucleotide sequence may be determined in a routine manner by aligning the PRO polypeptide-encoding nucleotide sequence with other known nucleotide sequences using any of a number of well known sequence alignment programs and determining which PRO polypeptide-encoding nucleotide sequence fragment(s) are novel All of such PRO polypeptide-encoding nucleotide sequences are contemplated herein Also contemplated are the PRO polypeptide fragments encoded by these nucleotide molecule fragments, preferably those PRO polypeptide fragments that comprise a binding site for an anti-PRO antibody In another embodiment, the invention provides an isolated PRO polypeptide encoded by any of the isolated nucleic acid sequences hereinabove identified In a certain aspect, the invention concerns an isolated PRO polypeptide comprising an amino acid sequence having at least about 80% amino acid sequence identity, alternatively at least about 81 % amino acid sequence identity alternatively at least about 82% amino acid sequence identity, alternatively at least about 83% amino acid sequence identity, alternatively at least about 84% amino acid sequence identity, alternativeh at least about 85% amino acid sequence identity, alternatively at least about 867c amino acid sequence identity, alternatively at least about 87% amino acid sequence identity alternatively at least about 887c amino acid sequence identity alternatively at least about 897c amino acid sequence identity, alternate el v at least about 907c amino acid sequence identity alternatively at least about 91 % amino acid sequence identity alternatively at least about 92% amino acid sequence identity, alternativ ely at least about 93% amino acid sequence identity, alternatively at least about 94% amino acid sequence identity, alternatively at least about 957c amino acid sequence identity, alternatively at least about 96% ammo acid sequence identity alternatively at least about 977c amino acid sequence identity, alternatively at least about 987c am o acid sequence identity and alternatively at least about 997c amino acid sequence identity to a PRO polypeptide having a full-length amino acid sequence as disclosed herein, an amino acid sequence lacking the signal peptide as disclosed herein, an extracellular domain of a transmembrane protein, with or without the signal peptide, as disclosed herein or any other specifically defined fragment of the full-length amino acid sequence as disclosed herein In a further aspect, the invention concerns an isolated PRO polypeptide comprising an ammo acid sequence having at least about 80% amino acid sequence identity, alternatively at least about 81 7c amino acid sequence identity, alternatively at least about 82% ammo acid sequence identity, alternatively at least about 83% am o acid sequence identity, alternatively at least about 84% amino acid sequence identity alternatively at least about 857c amino acid sequence identity, alternatively at least about 86% amino acid sequence identity, alternatively at least about 87% amino acid sequence identity, alternatively at least about 88% amino acid sequence identity, alternatively at least about 897c amino acid sequence identity, alternatively at least about 907c ammo acid sequence identity, alternatively at least about 91 % amino acid sequence identity, alternatively at least about 927c amino acid sequence identity, alternatively at least about 937c amino acid sequence identity, alternatively at least about 947c amino acid sequence identity, alternatively at least about 95% amino acid sequence identity, alternatively at least about 96% amino acid sequence identity, alternatively at least about 977c amino acid sequence identity, alternatively at least about 98% amino acid sequence identity and alternatively at least about 997e amino acid sequence identity to an amino acid sequence encoded by any of the human protein cDNAs deposited with the ATCC as disclosed herein In a further aspect, the invention concerns an isolated PRO polypeptide comprising an amino acid sequence scoring at least about 80% positives, alternatively at least about 817c positives, alternatively at least about 827c positives, alternatively at least about 83% positives, alternatively at least about 847c positives, alternatively at least about 857c positives, alternatively at least about 867c positives, alternatively at least about 877o positives, alternatively at least about 887c positives, alternatively at least about 897c positives, alternatively at least about 90% positives, alternatively at least about 91 % positives, alternatively at least about 927c positives, alternatively at least about 937c positives, alternatively at least about 94% positives alternatively at least about 95%> positives, alternatively at least about 967c positives, alternatively at least about 977c positives, alternatively at least about 987c positives and alternatively at least about 99% positives when compared with the amino acid sequence of a PRO polypeptide having a full-length amino acid sequence as disclosed herein, an amino acid sequence lacking the signal peptide as disclosed herein, an extracellular domain of a transmembrane protein with or without the signal peptide, as disclosed herein or any other specifically defined fragment of the full-length amino acid sequence as disclosed herein In a specific aspect, the invention provides an isolated PRO polypeptide without the N-terminal signal sequence and or the initiating methionine and is encoded by a nucleotide sequence that encodes such an amino acid sequence as hereinbefore described Processes for producing the same are also herein described wherein those processes comprise culturing a host cell comprising a vector w hich comprises the appropriate encoding nucleic acid molecule under conditions suitable tor expression of the PRO polypeptide and recov eπng the PRO polypeptide from the cell culture Another aspect of the invention provides an isolated PRO polypeptide which is either transmembrane domain-deleted or transmembrane domain-inacti vated Processes for producing the same are also herein described wherein those processes comprise culturing a host cell comprising a vector which comprises the appropriate encoding nucleic acid molecule under conditions suitable for expression ot the PRO polypeptide and recovering the PRO polypeptide from the cell culture In yet another embodiment, the invention concerns agonists of a native PRO polypeptide as defined herein In a particular embodiment, the agonist is an anti-PRO antibody or a small molecule In a further embodiment, the invention concerns a method ot identifying agonists to a PRO polypeptide which comprise contacting the PRO polypeptide with a candidate molecule and monitoring a biological activity mediated by said PRO polypeptide Preferably, the PRO polypeptide is a native PRO polypeptide In a still further embodiment, the invention concerns a composition ot matter comprising a PRO polypeptide, or an agonist of a PRO polypeptide as herein described, or an anti-PRO antibody, in combination with a carrier Optionally, the carrier is a pharmaceutically acceptable carrier Another embodiment of the present invention is directed to the use of a PRO polypeptide. or an agonist thereof as hereinbefore described, or an anti-PRO antibody, for the preparation of a medicament useful in the treatment of a condition which is responsive to the PRO polypeptide, an agonist thereof or an anti-PRO antibody In additional embodiments of the present invention, the invention provides vectors comprising DNA encoding any of the herein described polypeptides Host cells comprising any such vector are also provided By way of example, the host cells may be CHO cells, E coli, yeast, or Baculovirus-infected insect cells A process for producing any of the herein described polypeptides is further provided and comprises culturing host cells under conditions suitable for expression of the desired polypeptide and recovering the desired polypeptide from the cell culture In other embodiments, the invention provides chimeric molecules comprising any ot the herein described polypeptides fused to a heterologous polypeptide or amino acid sequence Example of such chimeric molecules comprise any of the herein described polypeptides fused to an epitope tag sequence or a Fc region of an immunoglobulin In yet another embodiment, the invention provides an antibody which specifically binds to any ot the above or below described polypeptides Optionally, the antibody is a monoclonal antibody, humanized antibody, antibody fragment or single-chain antibody In yet other embodiments, the invention provides oligonucleotide probes useful for isolating genomic and cDNA nucleotide sequences or as antisense probes, wherein those probes may be derived from any of the above or below described nucleotide sequences BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a nucleotide sequence (SEQ ID NO D ot a native sequence PRO240 cDNA w herein SEQ ID NO 1 is a clone designated herein as DNA34387-1 138 Figure 2 shows the amino acid sequence (SEQ ID NO 2) deriv ed from the coding sequence of SEQ ID NO 1 shown in Figure 1 Figure 3 shows a nucleotide sequence (SEQ ID NO 3) ot a native sequence PR0381 cDNA wherein SEQ ID NO 3 is a clone designated herein as 'DNA44194-1 17 Figure 4 shows the ammo acid sequence (SEQ ID NO 4) derived from the coding sequence of SEQ ID NO 3 shown in Figure 3 Figure 5 shows a nucleotide sequence (SEQ ID NO 5) ot a native sequence PR0534 cDNA wherein SEQ ID NO 5 is a clone designated herein as ' DNA48333-1321 Figure 6 shows the ammo acid sequence (SEQ ID NO 6) deriv ed from the coding sequence of SEQ ID NO 5 shown in Figure 5 Figure 7 shows a nucleotide sequence (SEQ ID NO 7) ot a native sequence PRO540 cDNA, wheiein SEQ ID NO 7 is a clone designated herein as ' DN A44189- 1322 Figure 8 shows the amino acid sequence (SEQ ID NO 8) derived from the coding sequence of SEQ ID NO 7 shown in Figure 7 Figure 9 shows a nucleotide sequence (SEQ ID NO 9) of a native sequence PR0698 cDNA, wherein SEQ ID NO 9 is a clone designated herein as "DNA48320-1433 Figure 10 shows the amino acid sequence (SEQ ID NO 10) derived from the coding sequence of SEQ ID NO 9 shown in Figure 9 Figure 1 1 shows a nucleotide sequence (SEQ ID NO 1 1 ) ot a native sequence PR0982 cDNA wherein SEQ ID NO 1 1 is a clone designated herein as "DNA57700-1408 Figure 12 shows the amino acid sequence (SEQ ID NO 12) derived from the coding sequence of SEQ ID NO 1 1 shown in Figure 1 1 Figure 1 shows a nucleotide sequence (SEQ ID NO 13) ot a native sequence PRO1005 cDNA wherein SEQ ID NO 13 is a clone designated herein as 'DNA57708-141 1 Figure 14 shows the amino acid sequence (SEQ ID NO 14) derived from the coding sequence of SFQ ID NO 13 shown in Figure 13 Figure 15 shows a nucleotide sequence (SEQ ID NO 15 ) of a native sequence PRO 1007 cDNA wherein SEQ ID NO 15 is a clone designated herein as "DNA57690-1374 Figure 16 shows the amino acid sequence (SEQ ID NO 16) derived from the coding sequence of SEQ ID NO 15 shown in Figure 15 Figure 17 shows a nucleotide sequence (SEQ ID NO 17) ot a native sequence PROl 131 cDNA wherein SEQ ID NO 17 is a clone designated herein as "DNA59777- 1480 Figure 18 shows the amino acid sequence (SEQ ID NO 18) derived from the coding sequence of SEQ ID NO 17 shown in Figure 17 Figure 19 shows a nucleotide sequence (SEQ ID NO 19) ot a native sequence PROl 157 cDNA wherein SEQ ID NO 19 is a clone designated herein as "DNA60292- 1506" Figuie 20 show s the amino acid sequence (SEQ ID O 20) deriv ed from the coding sequence of SEQ ID NO 19 sho n in Figure 19 Figure 21 shows a nucleotide sequence (SEQ ID NO 21 ) ot a nativ e sequence PRO l 199 cDNA w herein SEQ ID NO 21 is a clone designated herein as "DN A653 1 - 1366- 1 ' Figuie 22 shows the amino acid sequence (SEQ ID NO 22) derived from the coding sequence of SEQ ID NO 21 shown in Figure 21 Figure 23 shows a nucleotide sequence (SEQ ID NO 23) of a native sequence PRO 1265 cDNA, w herein SEQ ID NO 23 is a clone designated herein as "DNA60764- 1533" Figure 24 shows the ammo acid sequence (SEQ ID NO 24) derived from the coding sequence of SEQ ID NO.23 shown in Figure 23 Figure 25 shows a nucleotide sequence (SEQ ID NO 25) ot nativ e sequence PRO l 286 cDNA. herein SEQ ID NO 25 is a clone designated herein as "DNA64903- 1553' Figure 26 shows the am o acid sequence (SEQ ID NO 26) deriv ed from the coding sequence of SEQ ID NO 25 shown in Figure 25 Figure 27 shows a nucleotide sequence (SEQ ID NO 27) ot a native sequence PRO 1 313 cDNA. w herein SEQ ID NO.27 is a clone designated herein as "DNA64966-1575" Figure 28 shows the amino acid sequence (SEQ ID NO 28) deπv ed from the coding sequence of SEQ ID NO.27 shown in Figure 27 Figure 29 shows a nucleotide sequence (SEQ ID NO 29) of a native sequence PRO 1338 cDNA, w herein SEQ ID N0.29 is a clone designated herein as "DNA66667" Figure 30 shows the amino acid sequence (SEQ ID NO 30) derived from the coding sequence of SEQ ID NO 29 shown in Figure 29 Figure 31 shows a nucleotide sequence (SEQ ID NO 31 ) ot a native sequence PROl 375 cDNA, w herein SEQ ID NO 31 is a clone designated herein as "DNA67004-1614" Figure 32 shows the amino acid sequence (SEQ ID NO 32) derived from the coding sequence of SEQ ID NO.31 shown in Figure 31 Figure 33 shows a nucleotide sequence (SEQ ID NO 33) of a native sequence PROl 410 cDNA, w herein SEQ ID NO 33 is a clone designated herein as "DNA68874-1622" Figure 34 shows the amino acid sequence (SEQ ID NO 34) derived from the coding sequence of SEQ ID NO.33 shown in Figure 33 Figure 35 shows a nucleotide sequence (SEQ ID NO 35) ot a native sequence PRO 1488 cDNA, herein SEQ ID NO 35 is a clone designated herein as "DNA73736-1657" Figure 36 shows the amino acid sequence (SEQ ID NO 36) derived from the coding sequence of SEQ ID NO:35 shown in Figure 35 Figure 37 shows a nucleotide sequence (SEQ ID NO 37) ot a native sequence PR03438 cDNA. w herein SEQ ID NO 37 is a clone designated herein as "DNA82364-2538" Figure 38 shows the amino acid sequence (SEQ ID NO 38) derived from the coding sequence of SEQ ID NO 37 show n in Figure 37 Figure 39 show s a nucleotide sequence (SEQ ID NO 39) ot a nativ e sequence PRO4302 cDNA wherein SEQ ID NO 39 is a clone designated herein as ' DNA92218-2554 Figure 40 shows the amino acid sequence (SEQ ID NO 40) deπv ed from the coding sequence ot SEQ ID NO 39 shown in Figure 39 Figure 41 shows a nucleotide sequence (SEQ ID NO 41 ) ot a nativ e sequence PRO4400 cDNA wherein SEQ ID NO 41 is a clone designated herein as 'DNA87974 2609 Figure 42 shows the amino acid sequence (SEQ ID NO 42) derived from the coding sequence of SEQ ID NO 41 shown in Figure 41 Figure 43 shows a nucleotide sequence (SEQ ID NO 43) of a nativ e sequence PR05725 cDNA, wherein SEQ ID NO 43 is a clone designated herein as "DNA92265-2669 Figure 44 shows the amino acid sequence (SEQ ID NO 44) derived from the coding sequence of SEQ ID NO 43 shown in Figure 43 Figure 45 shows a nucleotide sequence (SEQ ID NO 45) of a native sequence PR0183 cDNA, wherein SEQ ID NO 45 is a clone designated herein as ' DNA28498 Figure 46 shows the amino acid sequence (SEQ ID NO 46) deπv ed from the coding sequence of SEQ ID NO 45 shown in Figure 45 Figure 47 shows a nucleotide sequence (SEQ ID NO 47) of a native sequence PRO202 cDNA wherein SEQ ID NO 47 is a clone designated herein as "DNA30869 Figure 48 shows the amino acid sequence (SEQ ID NO 48) derived from the coding sequence of SEQ ID NO 47 shown in Figure 47 Figure 49 shows a nucleotide sequence (SEQ ID NO 49) ot a nati e sequence PR0542 cDNA, wherein SEQ ID NO 49 is a clone designated herein as "DNA56505' Figure 50 shows the amino acid sequence (SEQ ID NO 50) derived from the coding sequence of SEQ ID NO 49 shown in Figure 49 Figure 51 shows a nucleotide sequence (SEQ ID NO 51 ) ot a native sequence PROS61 cDNA wherein SEQ ID NO 51 is a clone designated herein as "DNA50798 Figure 52 shows the amino acid sequence (SEQ ID NO 52) derived from the coding sequence of SEQ ID NO 51 shown in Figure 51 Figure 53 shows a nucleotide sequence (SEQ ID NO 53) of a native sequence PRO 1096 cDNA, wherein SEQ ID NO 53 is a clone designated herein as "DNA61870' Figure 54 shows the amino acid sequence (SEQ ID NO 54) deπv ed from the coding sequence of SEQ ID NO 53 shown in Figure 53 Figure 55 shows a nucieotide sequence (SEQ ID NO 55) of a native sequence PR03562 cDNA, wherein SEQ ID NO 55 is a clone designated herein as "DNA96791 Figure 56 shows the am o acid sequence (SEQ ID NO 56) derived from the coding sequence of SEQ ID NO 55 shown in Fieure 55 DETAILED DESCRIPTION OF THE INVENTION The terms "PRO polypeptide , and ' PRO ' as used herein and when immediately followed by a numerical designation refer to various polypeptides. w herein the complete designation (; e PRO/number) refers to specific polypeptide sequences as described herein The terms "PRO/number polypeptide and "PRO/number' w herein the term "number' is provided as an actual numerical designation as used herein encompass nativ e sequence polypeptides and polypeptide variants (which are further defined herein) The PRO polypeptides described herein may be isolated from a variety of sources, such as from human tissue types or from another source, or prepared by recombinant or synthetic methods A ' native sequence PRO polypeptide' comprises a polypeptide hav ing the same amino acid sequence as the corresponding PRO polypeptide deri ed from nature Such native sequence PRO polypeptides can be isolated from nature or can be produced by recombinant or synthetic means The term ' nativ e sequence PRO polypeptide" specifically encompasses naturally-occurring truncated or secreted forms of the specific PRO polypeptide (e g , an extracellular domain sequence) naturally-occurring variant forms (e g , alternatively spliced forms) and naturally-occurring alle c variants of the polypeptide In various embodiments of the invention, the nativ e sequence PRO polypeptides disclosed herein are mature or full-length native sequence polypeptides comprising the full-length amino acid sequences shown in the accompanying figures Start and stop codons are shown in bold font and underlined in the figures However, while the PRO polypeptide disclosed in the accompanying figures are shown to begin with methionine residues designated herein as amino acid position 1 in the figures, it is conceivable and possible that other methionine residues located either upstream or downstream from the amino acid position 1 in the figures may be employed as the starting amino acid residue for the PRO polypeptides The PRO polypeptide "extracellular domain" or "ECD" refers to a form of the PRO polypeptide which is essentially free of the transmembrane and cytoplasmic domains Ordinarily, a PRO polypeptide ECD w ill have less than 1 % of such transmembrane and/or cytoplasmic domains and preferably, w ill have less than 0 5% of such domains It will be understood that any transmembrane domains identified for the PRO polypeptides of the present invention are identified pursuant to criteria routinely employed in the art for identifying that type of hvdrophobic domain The exact boundaries of a transmembrane domain may vary but most likely by no more than about 5 amino acids at either end of the domain as initially identified herein Optionally, therefore an extracellular domain of a PRO polypeptide may contain from about 5 or fewer amino acids on either side of the transmembrane domain extracellular domain boundary as identified in the Examples or specification and such polypeptides, with or without the associated signal peptide, and nucleic acid encoding them, are comtemplated by the present invention The approximate location of the "signal peptides" of the various PRO polypeptides disclosed herein are shown in the present specification and or the accompanying figures It is noted however, that the C-terminal boundary of a signal peptide may vary, but most likely by no more than about 5 amino acids on either side ot the signal peptide C-terminal boundary as initially identified herein, wherein the C-terminal boundary of the signal peptide may be identified pursuant to criteria routinely employed in the art tor identifying that type of amino acid sequence element (e g , Nielsen et al , Prot Eng , 10 1 -6 (1997) and von Heinje et al , Nucl Acids Res , 14 4683-4690 (1986)) Moreover, it is also recognized that, in some cases, cleavage of a signal sequence from a secreted polypeptide is not entirely uniform, resulting in more than one secreted species These mature polypeptides where the signal peptide is cleaved within no more than about 5 amino acids on either side of the C-terminal boundary ot the signal peptide as identified herein, and the polynucleotides encoding them, are contemplated by the present invention "PRO polypeptide variant' means an active PRO polypeptide as defined abov e or below having at least about 807c amino acid sequence identity with a full-length nativ e sequence PRO polypeptide sequence as disclosed herein, a PRO polypeptide sequence lacking the signal peptide as disclosed herein, an extracellular domain of a PRO polypeptide, with or without the signal peptide, as disclosed herein or any other fragment of a full-length PRO polypeptide sequence as disclosed herein Such PRO polypeptide variants include, for instance, PRO polypeptides wherein one or more amino acid residues are added, or deleted, at the N- or C terminus of the full-length native amino acid sequence Ordinarily, a PRO polypeptide variant will have at least about 80% amino acid sequence identity, alternatively at least about 81 % amino acid sequence identitv. alternatively at least about 82% ammo acid sequence identity, alternatively at least about 83% ammo acid sequence identity , alternativ ely at least about 847c amino acid sequence identity, alternatively at least about 85% amino acid sequence identity, alternatively at least about 86% amino acid sequence identity, alternatively at least about 87% amino acid sequence identit , alternatively at least about 887c amino acid sequence identity, alternatively at least about 89% amino acid sequence identity alternatively at least about 90% amino acid sequence identity, alternativ ely at least about 91 %> amino acid sequence identity, alternatively at least about 927c amino acid sequence identity alternatively at least about 93% amino acid sequence identity, alternatively at least about 94% amino acid sequence identity, alternatively at least about 957c amino acid sequence identity, alternatively at least about 96% amino acid sequence identity, alternatively at least about 97% amino acid sequence identity, alternatively at least about 987c amino acid sequence identity and alternatively at least about 99% amino acid sequence identity to a full-length native sequence PRO polypeptide sequence as disclosed herein, a PRO polypeptide sequence lacking the signal peptide as disclosed herein, an extracellular domain ot a PRO polypeptide. with or without the signal peptide, as disclosed herein or any other specifically defined fragment of a full-length PRO polypeptide sequence as disclosed herein Ordinarily, PRO variant polypeptides are at least about 10 am o acids in length, alternatively at least about 20 ammo acids in length, alternatively at least about 30 amino acids in length, alternatively at least about 40 amino acids in length alternatively at least about 50 amino acids in length, alternatively at least about 60 amino acids in length alternatively at least about 70 amino acids in length, alternatively at least about 80 amino acids in length, alternatively at least about 90 amino acids in length, alternatively at least about 100 amino acids in length alternatively at least about 150 amino acids in length, alternatively at least about 200 amino acids in length, alternatively at least about 300 amino acids in length, or more "Percent (%) amino acid sequence identity" with respect to the PRO polypeptide sequences identified herein is defined as the percentage of amino acid residues in a candidate sequence that are identical with the amino acid residues in a PRO sequence, after aligning the sequences and introducing gaps, if necessary, to achieve the maximum percent sequence identity, and not considering any conservative substitutions as part of the sequence identity Alignment tor purposes of determining percent amino acid sequence identity can be achieved in various ways that are within the skill in the art, for instance, using publicly available computer software such as BLAST, BLAST-2, ALIGN, ALIGN-2 or Megahgn (DNASTAR) software Those skilled in the art can determine appropriate parameters for measuring alignment, including any algorithms needed to achieve maximal alignment over the full-length of the sequences being compared For purposes herein, however % amino acid sequence identity values are obtained as described below bv using the sequence comparison computer program ALIGN-2 wherein the complete source code tor the ALIGN-2 program is pi vided in Table 1 The ALIGN-2 sequence comparison computer program was authored by Genentech. Inc . and the source code shown in Table 1 has been filed with user documentation in the U S Copyright Office. Washington D C , 20559, w here it is registered under U S Copyright Registration No TXU510087 The ALIGN-2 program is publicly available through Genentech, Inc . South San Francisco. California or may be compiled from the source code provided in Table 1 The ALIGN-2 program should be compiled tor use on a UNIX operating system, preferably digital UNIX V4 0D All sequence comparison parameters are set by the ALIGN-2 program and do not vary For purposes herein, the % amino acid sequence identity ot a giv en amino acid sequence A to w ith, or against a given amino acid sequence B (which can alternatively be phrased as a given am o acid sequence A that has or comprises a certain c /c amino acid sequence identity to, with, or against a given ammo acid sequence BI is calculated as follows 100 times the traction X/Y where X is the number of amino acid residues scored as identical matches by the sequence alignment program ALIGN-2 in that program ' s alignment of A and B, and where Y is the total number of amino acid residues in B It will be appreciated that where the length of amino acid sequence A is not equal to the length of amino acid sequence B, the % amino acid sequence identity of A to B will not equal the % amino acid sequence identity of B to A. As examples of % amino acid sequence identity calculations. Tables 2-3 demonstrate how to calculate the % amino acid sequence identity of the amino acid sequence designated ''Comparison Protein" to the amino acid sequence designated "PRO" Unless specifically stated otherwise, all 7c amino acid sequence identity values used herein are obtained as described above using the ALIGN-2 sequence comparison computer program However. % amino acid sequence identity may also be determined using the sequence comparison program NCBI-BLAST2 (Altschul et al Nucleic Acids Res . 25 3389-3402 ( 1997)) The NCBI-BLAST2 sequence comparison program may be downloaded from http://www ncbi nlm nih gov, or otherwise obtained from the National Institute of Health. Bethesda, MD NCBI- BLAST2 uses several search parameters, wherein all of those search parameters are set to default values including. for example, unmask = yes, strand = all, expected occurrences = 10. minimum low complexity length = 15/5. multipass e-value = 0 01 , constant for multi-pass = 25. dropoff for final gapped alignment = 25 and scoring matrix = BLOSUM62 In situations where NCBI-BLAST2 is employed for ammo acid sequence comparisons, the % amino acid sequence identity of a given amino acid sequence A to, with, or against a given amino acid sequence B (w hich can alternatively be phrased as a given amino acid sequence A that has or comprises a certain 7c amino acid sequence identity to, with, or against a given amino acid sequence B) is calculated as follows 100 times the traction X/Y where X is the number of amino acid residues scored as identical matches by the sequence alignment program NCBI-BLAST2 in that program s alignment of A and B. and where Y is the total number of amino acid residues in B It will be appreciated that where the length ot amino acid sequence A is not equal to the length of amino acid sequence B, the 7c amino acid sequence identity of A to B will not equal the % amino acid sequence identity of B to A In addition, % amino acid sequence identity may also be determined using the WU-BLAST-2 computer program (Altschul et al Methods in Enzvmology. 266 460-480 ( 1996)) Most of the WU-BLAST-2 search parameters are set to the default values Those not set to default values, i e , the adjustable parameters, are set with the following values overlap span = 1 , overlap fraction = 0 125, word threshold (T) = 1 1 , and scoring matrix = BLOSUM62 For purposes herein, a % amino acid sequence identity value is determined by dividing (a) the number ot matching identical amino acids residues between the amino acid sequence ot the PRO polypeptide of interest having a sequence derived from the native PRO polypeptide and the comparison amino acid sequence of interest (i e . the sequence against which the PRO polypeptide of interest is being compared which may be a PRO variant polypeptide) as determined by WU-BLAST-2 by (b) the total number of amino acid residues ot the PRO polypeptide of interest For example, in the statement "a polypeptide comprising an amino acid sequence A which has or having at least 807c amino acid sequence identity to the amino acid sequence B". the amino acid sequence A is the comparison amino acid sequence of interest and the amino acid sequence B is the amino acid sequence of the PRO polypeptide of interest "PRO variant polynucleotide" or "PRO variant nucleic acid sequence' means a nucleic acid molecule which encodes an active PRO polypeptide as defined below and which has at least about 80% nucleic acid sequence identity with a nucleic acid sequence encoding a full-length native sequence PRO poly peptide sequence as disclosed herein, a full-length native sequence PRO polypeptide sequence lacking the signal peptide as disclosed herein, an extracellular domain of a PRO polypeptide, with or without the signal peptide, as disclosed herein or any other fragment of a full-length PRO polypeptide sequence as disclosed herein Ordinarily a PRO variant polynucleotide will have at least about 80% nucleic acid sequence identity, alternatively at least about 81 % nucleic acid sequence identity, alternatively at least about 827c nucleic acid sequence identity, alternatively at least about 837c nucleic acid sequence identity, alternatively at least about 847c nucleic acid sequence identity, alternatively at least about 857c nucleic acid sequence identity, alternatively at least about 867c nucleic acid sequence identity, alternatively at least about 87% nucleic acid sequence identity, alternatively at least about 88% nucleic acid sequence identity, alternatively at least about 897c nucleic acid sequence identity, alternatively at least about 907c nucleic acid sequence identity, alternatively at least about 91 % nucleic acid sequence identity, alternatively at least about 927c nucleic acid sequence identity, alternatively at least about 937c nucleic acid sequence identity, alternatively at least about 94% nucleic acid sequence identity, alternatively at least about 95% nucleic acid sequence identity, alternatively at least about 967c nucleic acid sequence identity, alternatively at least about 977c nucleic acid sequence identity, alternatively at least about 98% nucleic acid sequence identity and alternatively at least about 99% nucleic acid sequence identity with a nucleic acid sequence encoding a full length native sequence PRO polypeptide sequence as disclosed herein, a full-length native sequence PRO polypeptide sequence lacking the signal peptide as disclosed herein, an extracellular domain ot a PRO polypeptide with or without the signal sequence, as disclosed herein or any other fragment of a full-length PRO polypeptide sequence as disclosed herein Variants do not encompass the native nucleotide sequence Ordinarily, PRO variant polynucleotides are at least about 30 nucleotides in length, alternatively at least about 60 nucleotides in length, alternativ ely at least about 90 nucleotides in length alternatively at least about 120 nucleotides in length, alternatively at least about 150 nucleotides in length alternatively at least about 180 nucleotides in length, alternatively at least about 210 nucleotides in length alternatively at least about 240 nucleotides in length, alternatively at least about 270 nucleotides in length, alternatively at least about 300 nucleotides in length, alternatively at least about 450 nucleotides in length alternatively at least about 600 nucleotides in length, alternatively at least about 900 nucleotides in length, or more "Percent (%) nucleic acid sequence identity" with respect to the PRO polypeptide-encoding nucleic acid sequences identified herein is defined as the percentage of nucleotides in a candidate sequence that are identical with the nucleotides in a PRO polypeptide-encoding nucleic acid sequence after aligning the sequences and introducing gaps, if necessary, to achieve the maximum percent sequence identity Alignment for purposes of determining percent nucleic acid sequence identity can be achieved in various w ay s that are within the skill in the art, for instance, using publicly available computer software such as BLAST BLAST 2, ALIGN, ALIGN-2 or Megahgn (DNASTAR) software Those skilled in the art can determine appropriate parameters for measuring alignment, including any algorithms needed to achieve maximal alignment over the full-length of the sequences being compared For purposes herein, however, % nucleic acid sequence identity values are obtained as described below by using the sequence comparison computer program ALIGN-2, wherein the complete source code for the ALIGN-2 program is provided in Table 1 The ALIGN-2 sequence comparison computer program was authored by Genentech, Inc , and the source code shown in Table 1 has been filed with user documentation in the U S Copyright Office, Washington D C , 20559, where it is registered under U S Copyright Registration No TXU510087 The ALIGN-2 program is publicly available through Genentech, Inc , South San Francisco, California or may be compiled from the source code provided in Table 1 The ALIGN-2 program should be compiled for use on a UNIX operating system, preferably digital UNIX V4 0D All sequence comparison parameters are set by the ALIGN-2 program and do not vary For purposes herein, the % nucleic acid sequence identity of a given nucleic acid sequence C to, with, or against a given nucleic acid sequence D (which can alternatively be phrased as a given nucleic acid sequence C that has or comprises a certain % nucleic acid sequence identity to, with, or against a given nucleic acid sequence D) is calculated as follows 100 times the fraction W/Z where W is the number ot nucleotides scored as identical matches by the sequence alignment program ALIGN-2 in that program's alignment of C and D. and where Z is the total number of nucleotides in D It will be appreciated that where the length of nucleic acid sequence C is not equal to the length of nucleic acid sequence D, the % nucleic acid sequence identity of C to D will not equal the % nucleic acid sequence identity of D to C As examples of % nucleic acid sequence identity calculations, Tables 4-5 demonstrate how to calculate the % nucleic acid sequence identity of the nucleic acid sequence designated "Comparison DNA" to the nucleic acid sequence designated "PRO- DNA" Unless specifically stated otherwise, all % nucleic acid sequence identity values used herein are obtained as described above using the ALIGN 2 sequence comparison computer program However % nucleic acid sequence identity ma\ also be determined using the sequence comparison program NCBI-BLAST2 (Altschul etal Nucleic Acids Res 25 3389 3402 ( 1997)) The NCBI-BLAST2 sequence comparison program may be downloaded from http //www ncbi nlm nih gov or otherw ise obtained from the National Institute of Health Bethesda, MD NCBI-BLAST2 uses several search parameters wherein all ot those search parameters are set to default values including, for example unmask = yes strand = all expected occurrences = 10 minimum low complexity length = 15/5, multi-pass e-value = 0 01 constant for multi-pass = 25 dropoff for final gapped alignment = 25 and scoring matrix = BLOSUM62 In situations where NCBI-BLAST2 is employed tor sequence comparisons the % nucleic acid sequence identity of a given nucleic acid sequence C to with or against a giv en nucleic acid sequence D (which can alternatively be phrased as a given nucleic acid sequence C that has or comprises a certain % nucleic acid sequence identity to with or against a given nucleic acid sequence D) is calculated as follo s 100 times the traction W/Z where W is the number of nucleotides scored as identical matches by the sequence alignment program NCBI BLAST2 in that program s alignment of C and D, and where Z is the total number of nucleotides in D It will be appieciated that where the length of nucleic acid sequence C is not equal to the length of nucleic acid sequence D the % nucleic acid sequence identity of C to D will not equal the % nucleic acid sequence identity of D to C In addition % nucleic acid sequence identity values may also be generated using the WU BLAST-2 computer program (Altschul et al , Methods in Enzymolosv. 266 460-480 ( 1996)) Most of the WU BLAST 2 search parameters are set to the default values Those not set to default values, ; e , the adjustable parameters, are set with the following values overlap span = 1 , overlap fraction = 0 125 word threshold (T) = 1 1 , and scoring matrix = BLOSUM62 For purposes herein, a % nucleic acid sequence identity value is determined by dividing (a) the number of matching identical nucleotides between the nucleic acid sequence of the PRO polypeptide-encoding nucleic acid molecule of interest having a sequence derived from the native sequence PRO polypeptide-encoding nucleic acid and the comparison nucleic acid molecule ot interest (i e , the sequence against which the PRO polypeptide-encoding nucleic acid molecule of interest is being compared which may be a variant PRO polynucleotide) as determined by WU-BLAST 2 by (b) the total number of nucleotides of the PRO polypeptide- encoding nucleic acid molecule of interest For example in the statement 'an isolated nucleic acid molecule comprising a nucleic acid sequence A which has or having at least 807c nucleic acid sequence identity to the nucleic acid sequence B", the nucleic acid sequence A is the comparison nucleic acid molecule of interest and the nucleic acid sequence B is the nucleic acid sequence of the PRO polypeptide encoding nucleic acid molecule of interest In other embodiments, PRO variant polynucleotides are nucleic acid molecules that encode an activ e PRO polypeptide and which are capable of hybridizing, preferably under stringent hybridization and wash conditions to nucleotide sequences encoding the full-length PRO polypeptide shown in the accompanying figures herein PRO variant polypeptides may be those that are encoded by a PRO variant polynucleotide The term ' positives' , in the context of the amino acid sequence identity comparisons performed as described above includes amino acid residues in the sequences compared that are not only identical, but also those that have similar properties Amino acid residues that score a positive v alue to an amino acid residue of interest are those that are either identical to the amino acid residue of interest or are a preferred substitution (as defined in Table 6 below) of the amino acid residue of interest For purposes herein, the % v alue of positives ot a giv en ammo acid sequence A to, with or against a giv en amino acid sequence B (which can alternatively be phrased as a giv en amino acid sequence A that has or comprises a certain % positives to, with or against a given amino acid sequence B) is calculated as follows 100 times the fraction X/Y where X is the number of amino acid residues scoring a positive value by the sequence alignment program ALIGN- 2 in that program's alignment of A and B, and where Y is the total number ot amino acid residues in B It will be appreciated that where the length of amino acid sequence A is not equal to the length of amino acid sequence B the % positives of A to B will not equal the % positives of B to A "Isolated", when used to describe the various polypeptides disclosed herein, means a polypeptide that has been identified and separated and/or recovered from a component of its natural environment Preferably the isolated polypeptide is free of association with all components with which it is naturally associated Contaminant components of its natural environment are materials that would typically interfere with diagnostic or therapeutic uses for the polypeptide, and may include enzymes, hormones, and other proteinaceous or non-proteinaceous solutes In preferred embodiments, the polypeptide w ill be purified ( 1 ) to a degree sufficient to obtain at least 15 residues of N-terminal or internal amino acid sequence by use ot a spinning cup sequenator, or (2) to homogeneity by SDS-PAGE under non-reducing or reducing conditions using Coomassie blue or, preferably, silver stain Isolated polypeptides includes polypeptides in situ within recombinant cells, since at least one component of the PRO polypeptide natural environment will not be present Ordinarily, however, isolated polypeptides will be prepared by at least one purification step An "isolated' nucleic acid molecule encoding a PRO polypeptide or an "isolated nucleic acid molecule encoding an anti-PRO antibody is a nucleic acid molecule that is identified and separated from at least one contaminant nucleic acid molecule with which it is ordinarily associated in the natural source of the PRO-encoding nucleic acid or the natural source of the anti PRO-encoding nucleic acid Preferably, the isolated nucleic acid is free of association with all components with which it is naturally associated An isolated PRO-encoding nucleic acid molecule or an isolated anti-PRO-encoding nucleic acid molecule is other than in the form or setting in which it is found in nature Isolated nucleic acid molecules therefore are distinguished from the PRO-encoding nucleic acid molecule or from the anti-PRO-encoding nucleic acid molecule as it exists in natural cells However, an isolated nucleic acid molecule encoding a PRO polypeptide or an isolated nucleic acid molecule encoding an anti- PRO antibody includes PRO-nucleic acid molecules or anti-PRO-nucleic acid molecules contained in cells that ordinarily express PRO polypeptides or anti-PRO antibodies where, for example, the nucleic acid molecule is in a chromosomal location different from that of natural cells The ter ' control sequences" refers to DNA sequences necessary for the expression of an operably linked coding sequence in a particular host organism The control sequences that are suitable for prokaryotes, for example, include a promoter, optionally an operator sequence, and a ribosome binding site Eukaryotic cells are known to utilize promoters, polyadenylation signals and enhancers Nucleic acid is operably linked when it is placed into a functional relationship with another nucleic acid sequence For example, DNA for a presequence or secretory leader is operably linked to DNA tor a PRO polypeptide it it is expressed as a preprotein that participates in the secretion of the polypeptide, a promoter or enhancer is operably linked to a coding sequence if it affects the transcription of the sequence or a ribosome binding site is operably linked to a coding sequence if it is positioned so as to facilitate translation Generally ' operably linked means that the DNA sequences being linked are contiguous, and in the case of a secretory leader, contiguous and in reading phase However, enhancers do not have to be contiguous Linking is accomplished by ligation at convenient restriction sites If such sites do not exist the synthetic oligonucleotide adaptors or linkers are used in accordance with conv entional practice The term antibody is used in the broadest sense and specifically covers tor example single anti-PRO monoclonal antibodies (including agonist antibodies), anti-PRO antibody compositions w ith polyepitopic specificity, single chain anti PRO antibodies, and fragments of anti-PRO antibodies (see below) The term ' monoclonal antibody as used herein refers to an antibody obtained from a population of substantially homogeneous antibodies, ; e , the individual antibodies comprising the population are identical except for possible naturally-occurring mutations that may be present in minor amounts ' Stringency of hybridization reactions is readily determinable by one of ordinary skill in the art, and generally is an empirical calculation dependent upon probe length, washing temperature, and salt concentration In general, longer probes require higher temperatures for proper annealing, while shorter probes need lower temperatures Hybridization generally depends on the ability of denatured DNA to reanneal when complementary strands are present in an environment below their melting temperature The higher the degree of desired homology between the probe and hybπdizable sequence, the higher the relative temperature that can be used As a result, it follows that higher relative temperatures would tend to make the reaction conditions more stπngent, while lower temperatures less so For additional details and explanation of stringency of hybridization reactions, see, Ausubel et al , Current Protocols in Molecular Biology (Wiley Interscience Publishers, 1995) "Stringent conditions or ' high-stringency conditions , as defined herein may be identified by those that (1 ) employ low ionic strength and high temperature for washing, for example, 0 015 M sodium chloπde/0 0015 M sodium cιtrate/0 1 % sodium dodecyl sulfate at 50°C, (2) employ during hybridization a denaturing agent, such as formamide, for example, 50% (v/v) formamide with 0 1 % bovine serum albumιn/0 1 % Fιcoll/0 1 % polyvιnylpyrrolιdone/50mM sodium phosphate buffer at pH 6 5 with 750 mM sodium chloride, 75 mM sodium citrate at 42°C, or (3) employ 507c formamide, 5 x SSC (0 75 M NaCl, 0 075 M sodium citrate) 50 mM sodium phosphate (pH 6 8), 0 1 % sodium pyrophosphate, 5 x Denhardt s solution, sonicated salmon sperm DNA (50 μg/ml), 0 1 c SDS, and 107c dextran sulfate at 42 °C, with washes at 42 °C in 0 2 x SSC (sodium chloride/sodium citrate) and 50% formamide at 55 °C followed by a high-stringency wash consisting of 0 1 x SSC containing EDTA at 55°C "Moderately-stringent conditions' may be identified as described by Sambrook et al Molecular Cloning A Laboratory Manual (New York Cold Spring Harbor Press, 1989), and include the use of washing solution and hybridization conditions (e g , temperature, ionic strength, and % SDS) less stringent than those described above An example of moderately stπngent conditions is overnight incubation at 37 °C in a solution comprising 20% formamide. 5 x SSC ( 1 0 mM NaCl. 15 mM tπsodium citrate) 50 mM sodium phosphate (pH 7 6). 5 x Denhardt ' s solution, 10% dextran sultate. and 20 mg/ml denatured sheared salmon sperm DNA. fol lowed by washing the filters in 1 x SSC at about 37°-50°C The skilled artisan will recognize how to adjust the temperature, ionic strength, etc as necessary to accommodate factors such as probe length and the like The term "epitope tagged" when used herein refers to a chimeric polypeptide comprising a PRO polypeptide fused to a ' tag polypeptide" The tag polypeptide has enough residues to provide an epitope against which an antibody can be made yet is short enough such that it does not interfere ith activity of the polypeptide to which it is fused The tag polypeptide preferably also is fairly unique so that the antibody does not substantially cross-react with other epitopes Suitable tag polypeptides generally have at least six amino acid residues and usually between about 8 and 50 amino acid residues (preferably, between about 10 and 20 amino acid residues) As used herein, the term "immunoadhesm" designates antibody-like molecules which combine the binding specificity of a heterologous protein (an "adhesin") with the effector functions of immunoglobulm constant domains Structurally, the immunoadhesins comprise a fusion of an amino acid sequence with the desired binding specificity which is other than the antigen recognition and binding site ot an antibody (/ e . is "heterologous"), and an immunoglobulm constant domain sequence The adhesin part of an immunoadhesm molecule typically is a contiguous amino acid sequence comprising at least the binding site of a receptor or a ligand The immunoglobulm constant domain sequence in the immunoadhesm may be obtained from any immunoglobulm, such as IgG- 1 , IgG-2, IgG-3, or IgG-4 subtypes, IgA (including IgA-1 and IgA-2), IgE, IgD or IgM "Active" or "activity" for the purposes herein refers to form(s) of PRO polypeptides which retain a biological and/or an immunological activity of native or naturally-occurring PRO polypeptides, wherein "biological" activity refers to a biological function (either inhibitory or stimulatory ) caused by a native or naturally-occurring PRO polypeptide other than the ability to induce the production of an antibody against an antigenic epitope possessed by a native or naturally-occurring PRO polypeptide and an "immunological" activity refers to the ability to induce the production of an antibody against an antigenic epitope possessed by a native or naturally-occurring PRO polypeptide "Biological activity " in the context of an antibody or another agonist that can be identified by the screening assays disclosed herein (e g , an organic or inorganic small molecule, peptide, etc ) is used to refer to the ability of such molecules to invoke one or more of the effects listed herein in connection with the definition of a "therapeutically effective amount " In a specific embodiment, "biological activity" is the ability to inhibit neoplastic cell growth or proliferation A preferred biological activity is inhibition, including slowing or complete stopping, of the growth of a target tumor (e g , cancer) cell Another preferred biological activity is cytotoxic activity resulting in the death of the target tumor (e g , cancer) cell Yet another preferred biological activity is the induction of apoptosis of a target tumor (e g , cancer) cell The phrase "immunological activity' means immunological cross-reactivity with at least one epitope of a PRO polypeptide "Immunological cross-reactivity' as used herein means that the candidate polypeptide is capable of competitively inhibiting the qualitative biological activity of a PRO polypeptide having this activity with polyclonal antisera raised against the known active PRO polypeptide Such antisera are prepared in conventional fashion by injecting goats or rabbits, for example, subcutaneously with the known active analogue in complete Freund's adjuvant, followed by booster lntrapeπtoneal or subcutaneous miection in incomplete Freunds The immunological cross-reactiv ltvpreterably is " specific w hich means that the binding affinity of the immunologicaliy cross-reactive molecule (e g , antibody) identified, to the corresponding PRO polypeptide is significantly higher (preferably at least about 2-tιmes, more preferably at least about 4-tιmes, even more preferably at least about 6-tιmes, most preferably at least about 8-tιmes higher) than the binding affinity of that molecule to any other know n native polypeptide "Tumor", as used herein, refers to all neoplastic cell growth and proliferation, whether malignant or benign, and all pre-cancerous and cancerous cells and tissues The terms "cancer" and ' cancerous ' refer to or describe the physiological condition in mammals that is typically characterized by unregulated cell growth Examples ot cancer include but are not limited to, carcinoma, lymphoma, blastoma, sarcoma, and leukemia More particular examples of such cancers include breast cancer, prostate cancer, colon cancer, squamous cell cancer, small-cell lung cancer non-small cell lung cancer ovarian cancer, cervical cancer, gastrointestinal cancer, pancreatic cancer, ghoblastoma, liver cancer, bladder cancer, hepatoma. colorectal cancer, endometπal carcinoma, sahvaiy gland carcinoma, kidney cancer, vul val cancer thyroid cancer, hepatic carcinoma and various types of head and neck cancer "Treatment" is an intervention performed with the intention of preventing the development or altering the pathology of a disorder Accordingly, "treatment" refers to both therapeutic treatment and prophylactic or preventati ve measui es Those in need of treatment include those already with the disorder as well as those in which the disorder is to be prevented In tumor (e g , cancer) treatment, a therapeutic agent may directly decrease the pathology of tumor cells, or render the tumor cells more susceptible to treatment by other therapeutic agents, e g , radiation and/or chemotherapy The "pathology" of cancer includes all phenomena that compromise the well-being of the patient This includes, without limitation, abnormal or uncontrollable cell growth, metastasis, interference with the normal functioning of neighboring cells, release of cytokines or other secretory products at abnormal levels, suppression or aggravation of inflammatory or immunological response, etc An "effective amount" of a polypeptide disclosed herein or an agonist thereof, in reference to inhibition of neoplastic cell growth, is an amount capable of inhibiting, to some extent, the growth of target cells The term includes an amount capable of invoking a growth inhibitory, cytostatic and/or cytotoxic effect and or apoptosis of the target cells An "effective amount" of a PRO polypeptide or an agonist thereof for purposes of inhibiting neoplastic cell growth may be determined empirically and in a routine mannei A "therapeutically effective amount", in reference to the treatment ot tumor, refers to an amount capable of invoking one or more of the following effects ( 1 ) inhibition, to some extent, of tumor growth, including, slowing down and complete growth arrest, (2) reduction in the number of tumor cells, (3) reduction in tumor size, (4) inhibition (i e . reduction, slowing down or complete stopping) of tumor cell infiltration into peripheral organs, (5) inhibition (i e , reduction, slowing down or complete stopping) ot metastasis, (6) enhancement of anti-tumor immune response, which may, but does not have to, result in the regression or rejection of the tumor, and/or (7) relief, to some extent, of one or more symptoms associated with the disorder A "therapeutically effective amount" of a PRO polypeptide or an agonist thereof for purposes of treatment of tumor may be determined empirically and in a routine manner A grow th inhibitory amount of a PRO polypeptide or an agonist thereof is an amount capable of inhibiting the growth ot a cell, especially tumor, e g cancer cell either //; \ ιtιo or in \ ι\ o A growth inhibitory amount of a PRO polypeptide or an agonist thereof for purposes of inhibiting neoplastic cell growth may be determined empirically and in a routine manner A cytotoxic amount of a PRO polypeptide or an agonist thereof is an amount capable of causing the destruction of a cell, especially tumor, e g , cancer cell either in \ ιtιo or in mo A cytotoxic amount of a PRO polypeptide or an agonist thereof tor purposes of inhibiting neoplastic cell growth may be determined empirically and in a routine manner The term ' cytotoxic agent as used herein refers to a substance that inhibits or prevents the function of cells and or causes destruction of cells The term is intended to include radioactive isotopes (e g I ι , I 'i Y' J " and Re' 86 ), chemotherapeutic agents, and toxins such as enzymatically active toxins of bacterial, fungal, plant or animal origin, or fragments thereof A ' chemotherapeutic agent' is a chemical compound useful in the treatment of tumor, e g cancer Examples of chemotherapeutic agents include adriamycin doxorubicin, epirubicin, 5 fluorouracil, cytosine arabinoside (' Ara C ), cyclophosphamide, thiotepa, busulfan cytoxin taxoids, c g , pachtaxel (Taxol Bristol- Myers Squibb Oncology, Princeton, NJ) and doxetaxel (Taxotere, Rhόne-Poulenc Rorer, Antony, Rnace), toxotere, methotrexate, cisplatin, melphalan, vinblastine, bleomycin, etoposide lfosfamide, mitomycin C, mitoxantrone, vincπstine, vinorelbine, carboplatin, tenφoside, daunomycin, carminomycin, aminopteπn, dactinomycin, mitomycins, esperamicins (see, U S Patent No 4,675,187), melphalan and other related nitrogen mustards Also included in this definition are hormonal agents that act to regulate or inhibit hormone action on tumors such as tamoxifen and onapπ stone A ' growth inhibitory agent" when used herein refers to a compound or composition which inhibits growth of a cell, especially tumor, e g , cancer cell, either in vitro or in vι\o Thus, the growth inhibitory agent is one which significantly reduces the percentage of the target cells in S phase Examples of growth inhibitory agents include agents that block cell cycle progression (at a place other than S phase), such as agents that induce Gl arrest and M phase arrest Classical M-phase blockers include the vincas (vincπstine and vinblastine), taxol, and topo II inhibitors such as doxorubicin, epirubicin, daunorubicin, etoposide, and bleomycin Those agents that arrest Gl also spill over into S-phase arrest, for example, DNA alkylating agents such as tamoxifen, prednisone, dacarbazine, mechlorethamine, cisplatin, methotrexate, 5-fluorouracιl, and ara C Further information can be found in The Molecular Basis of Cancer. Mendelsohn and Israel, eds , Chapter 1 , entitled "Cell cycle regulation, oncogens, and antineoplastic drugs" by Murakami et al , (WB Saunders Philadelphia, 1995), especially p 13 The term "cytokine" is a generic term for proteins released by one cell population which act on another cell as intercellular mediators Examples of such cytokines are lymphokines monokines, and traditional polypeptide hormones Included among the cytokines are growth hormone such as human growth hormone, N-methionyl human growth hormone, and bovine growth hormone, parathyroid hormone, thyroxine insulin, proinsulin, relaxin prorelaxin, glycoprotein hormones such as follicle stimulating hormone (FSH), thyroid stimulating hormone (TSH), and luteinizing hormone (LH), hepatic growth factor, fibroblast growth factor, prolactm, placental lactogen tumor necrosis factor-α and -β, mulleπan-inhibiting substance, mouse gonadotropin-associated peptide, inhibin activin, vascular endothelial growth factor, lntegπn, thrombopoietin (TPO). nerve growth factors such as NGF-β, platelet growth factor transforming growth factors (TGFs) such as TGF-α and TGF-β. insulin-like growth factor-I and -II erythropoietin (EPO), osteoinductiv e factors, interferons such as ιnterteron-α, -β. and -γ, colony stimulating factors (CSFs) such as macrophage-CSF (M-CSF), granulocyte-macrophage CSF (GM-CSF). and granulocyte-CSF (G CSF), interleukins (ILs) such as IL- 1 IL- l α, IL-2, IL-3. IL-4, IL-5, IL-6, IL-7. IL 8. IL-9, IL-1 1 , IL-12. a tumor necrosis factor such as TNF- or TNF-β, and other polypeptide factors including LIF and kit ligand (KL) As used herein, the term cytokine includes proteins from natural sources or from recombinant cell culture and biologically active equivalents of the native sequence cytokines The term "prodrug" as used in this application refers to a precursor or derivative form of a pharmaceutically active substance that is less cytotoxic to tumor cells compared to the parent drug and is capable of being enzvmatically activated or converted into the more active parent form See, e g , Wilman, "Prodrugs in Cancer Chemotherapy". Biochemical Society Transactions, 14, pp 375-382 615th Meeting Belfast ( 1986) and Stella et al , ' Prodrugs A Chemical Approach to Targeted Drug Delivery " Directed Drug Delivery. Borchardt et al , (ed ), pp 247-267 Humana Press (1985) The prodrugs of this invention include, but are not limited to, phosphate-containing prodrugs, thiophosphate-containing prodrugs, glycosylated prodrugs or optionally substituted phenylacetamide-containing prodrugs.5-fluorocytosιne and other 5-fluorouπdιne prodrugs which can be deπvatized into a prodrug form for use in this invention include, but are not limited to, those chemotherapeutic agents described above The term "agonist" is used in the broadest sense and includes any molecule that mimics a biological activity of a native PRO polypeptide disclosed herein Suitable agonist molecules specifically include agonist antibodies or antibody fragments, fragments or amino acid sequence variants of native PRO polypeptides, peptides, small organic molecules, etc Methods for identifying agonists of a PRO polypeptide may comprise contacting a tumor cell with a candidate agonist molecule and measuring the inhibition of tumor cell growth "Chronic" administration refers to administration of the agent(s) in a continuous mode as opposed to an acute mode, so as to maintain the initial therapeutic effect (activity) for an extended period of time "Intermittent" administration is treatment that is not consecutively done without interruption, but rather is cyclic in nature "Mammal" for purposes of treatment refers to any animal classified as a mammal, including humans, domestic and farm animals, and zoo, sports, or pet animals, such as dogs, cats, cattle, horses, sheep, pigs, goats, rabbits, etc Preferably, the mammal is human Administration "in combination with" one or more further therapeutic agents includes simultaneous (concurrent) and consecutive administration in any order "Carriers" as used herein include pharmaceutically acceptable carriers, excipients. or stabilizers which are nontoxic to the cell or mammal being exposed thereto at the dosages and concentrations employed Often the physiologically acceptable carrier is an aqueous pH buffered solution Examples of physiologically acceptable carriers include buffers such as phosphate, citrate, and other organic acids, antioxidants including ascorbic acid, low molecular weight (less than about 10 residues) polypeptide, proteins, such as serum albumin, gelatin, or immunoglobulins, hydrophilic polymers such as polyvmylpyrrolidone. amino acids such as glycine, glutamine. asparagine. arginine or lysine, monosacchaπdes, disacchaπdes, and other carbohydrates including glucose, mannose, or dextπns, chelating agents such as EDTA, sugar alcohols such as manmtol or sorbitol, salt-forming counteπons such as sodium, and/or nomonic surfactants such as TWEEN rM , polyethylene glycol (PEG), and PLURONICS™ "Nativ e antibodies' and native immunoglobulins are usually heterotetrameπc glycoproteins of about 150,000 daltons composed ot two identical light (L) chains and two identical heavy (H) chains Each light chain is linked to a heavy chain by one covalent disulfide bond, while the number of disulfide linkages varies among the heavy chains of different immunoglobulm isotypes Each heavy and light chain also has regularly spaced intrachain disulfide bridges Each heavy chain has at one end a variable domain (V H ) followed by a number of constant domains Each light chain has a variable domain at one end ( V L ) and a constant domain at its other end, the constant domain of the light chain is aligned with the first constant domain of the heavy chain, and the light-chain variable domain is aligned with the variable domain of the heavy chain Particular amino acid residues are believed to form an interface between the light- and heavy-chain variable domains The term ' variable' refers to the fact that certain portions of the variable domains differ extensively in sequence among antibodies and are used in the binding and specificity of each particular antibody for its particular antigen However, the variability is not evenly distributed throughout the variable domains of antibodies It is concentrated in three segments called complementarity-determining regions (CDRs) or hypervaπable regions both in the light-chain and the heavy chain variable domains The more highly conserved portions of variable domains are called the framework regions (FR) The variable domains of native heavy and light chains each comprise four FR regions, largely adopting a β-sheet configuration, connected by three CDRs, which form loops connecting, and in some cases forming part of, the β-sheet structure The CDRs in each chain are held together in close proximity by the FR regions and, with the CDRs from the other chain, contribute to the formation of the antigen-binding site of antibodies (see, Kabat et al , NIH Publ No 91 -3242, Vol I, pages 647-669 (1991 )) The constant domains are not involved directly in binding an antibody to an antigen, but exhibit various effector functions, such as participation of the antibody in antibody-dependent cellular toxicity The term "hypervaπable region" when used herein refers to the amino acid residues of an antibody which are responsible for antigen-binding The hypervaπable region comprises amino acid residues from a "complementarity determining region" or "CDR" e , residues 24-34 (LI ), 50-56 (L2) and 89-97 (L3) in the light chain variable domain and 31 -35 (HI ), 50-65 (H2) and 95-102 (H3) in the heavy chain variable domain, Kabat et al , Sequences of Proteins ot Immunological Interest. 5th Ed Public Health Service, National Institute of Health, Bethesda, MD [ 1991 ] ) and/or those residues from a "hypervaπable loop" e , residues 26-32 (L 1 ), 50-52 (L2) and 91-96 (L3) in the light chain variable domain and 26-32 (HI ), 53-55 (H2) and 96-101 (H3) in the heavy chain variable domain, Clothia and Lesk, J Mol Biol , 196 901 -917 [ 1987]) "Framework" or "FR" residues are those variable domain residues other than the hypervaπable region residues as herein defined "Antibody fragments" comprise a portion of an intact antibody, preferably the antigen binding or variable region of the intact antibody Examples of antibody fragments include Fab, Fab', F(ab ),, and Fv fragments, diabodies, linear antibodies (Zapata et al , Protein Eng . 8(10) 1057-1062 [ 1995]), single chain antibody molecules, and multispecific antibodies formed from antibody fragments Papain digestion of antibodies produces two identical antigen-binding fragments, called "Fab" fragments, each with a single antigen-binding site, and a residual "Fc' fragment, a designation reflecting the ability to crystallize readily Pepsin treatment yields an F(ab') 2 fragment that has two antigen-combining sites and is still capable of cross-linking antigen ' Fv is the minimum antibody fragment which contains a complete antigen-recognition and -binding site This region consists of a dimer ot one heav y- and one light-chain variable domain in tight non-covalent association It is in this configuration that the three CDRs of each v ariable domain interact to define an antigen binding site on the surface of the V H V L dimer Collectively, the six CDRs confer antigen binding specificity to the antibody However, even a single variable domain (or half of an Fv comprising only three CDRs specific tor an antigen) has the ability to recognize and bind antigen although at a lower affinity than the entire binding site The Fab fragment also contains the constant domain ot the light chain and the first constant domain (CH 1 ) of the heavy chain Fab fragments differ from Fab fragments by the addition of a tew residues at the carboxy terminus of the heavy chain CH 1 domain including one or more cysteines from the antibody hinge region Fab -SH is the designation herein for Fab in which the cysteine resιdue(s) of the constant domains bear a free thiol group F(ab') : antibody f ragments originally were produced as pairs of Fab' fragments w hich hav e hinge cysteines between them Other chemical couplings of antibody fragments are also known The "light chains of antibodies (immunoglobulins) from any vertebrate species can be assigned to one of two clearly distinct types, called kappa and lambda, based on the amino acid sequences of their constant domains Depending on the amino acid sequence of the constant domain of their heav v chains, immunoglobulins can be assigned to different classes There are five major classes of immunoglobulins lg A IgD. IgE, IgG, and IgM, and several of these may be further divided into subclasses (isotypes), e g , IgG 1 , IgG2 IgG3, IgG4, IgA, and IgA2 The term ' monoclonal antibody" as used herein refers to an antibody obtained from a population of substantially homogeneous antibodies, i e , the individual antibodies comprising the population are identical except for possible naturally occurring mutations that may be present in minor amounts Monoclonal antibodies are highly specific, being directed against a single antigenic site Furthermore, in contrast to conventional (polyclonal) antibody preparations which typically include different antibodies directed against different determinants (epitopes), each monoclonal antibody is directed against a single determinant on the antigen In addition to their specificity, the monoclonal antibodies are advantageous in that they are synthesized by the hybπdoma culture, uncontaminated by other immunoglobulins The modifier ' monoclonal" indicates the character of the antibody as being obtained from a substantially homogeneous population of antibodies, and is not to be construed as requiring production of the antibody by any particular method For example, the monoclonal antibodies to be used in accordance with the present invention may be made by the hybπdoma method first described by Kohler et al Nature. 256 495 [ 1975 ] , or may be made by recombinant DNA methods (see, e g , U S Patent No 4,816,567) The monoclonal antibodies' may also be isolated from phage antibody libraries using the techniques described in Clackson et al , Nature, 352 624-628 [ 1991 ] and Marks et al , J Mol Biol , 222 581 -597 ( 1991 ), for example The monoclonal antibodies herein specifically include "chimeric' antibodies (immunoglobulins) in which a portion of the heavy and/or light chain is identical with or homologous to corresponding sequences in antibodies derived from a particular species or belonging to a particular antibody class or subclass hile the remainder of the chaιn(s) is identical with or homologous to corresponding sequences in antibodies deriv ed from another species or belonging to another antibody class or subclass, as well as fragments of such antibodies, so long as they exhibit the desired biological activity (U S Patent No 4,816,567, Morrison et al , Proc Natl Acad Sci USA, 8]_ 6851 -6855 [1984]) "Humanized" forms ot non-human (e g , murine) antibodies are chimeric immunoglobulins immunoglobulm chains or fragments thereof (such as Fv , Fab Fab F(ab )-, or other antigen-bindmg subsequences of antibodies) which contain minimal sequence derived from non-human immunoglobulm For the most part, humanized antibodies are human immunoglobulins (recipient antibody) in which residues from a CDR of the recipient are replaced by residues from a CDR of a non-human species (donor antibod ) such as mouse, rat or rabbit having the desired specificity, affinity, and capacity In some instances, Fv FR residues of the human immunoglobulm are replaced by corresponding non-human residues Furthermore, humanized antibodies may comprise residues which are found neither in the recipient antibody nor in the imported CDR or framework sequences These modifications are made to further refine and maximize antibody performance In general, the humanized antibody will comprise substantially all of at least one, and typically two, variable domains, in which all or substantially all of the CDR regions correspond to those of a non human immunoglobulm and all or substantially all of the FR regions are those of a human immunoglobulm sequence The humanized antibody optimally also will comprise at least a portion of an immunoglobulm constant region (Fc), typically that of a human immunoglobulm For further details, see, Jones et al , Natuie, 321 522-525 (1986), Reichmann et al , Nature. 332 323 329 [1988], and Presta Curr Op Struct Biol , 2 593-596 (1992) The humanized antibody includes a PRIMAΗZED™ antibody wherein the antigen-binding region of the antibody is derived from an antibody produced by immunizing macaque monkeys with the antigen of interest "Single-chain Fv" or "sFv" antibody fragments comprise the V H and V L domains of antibody, wherein these domains are present in a single polypeptide chain Preferably, the Fv polypeptide further comprises a polypeptide linker between the V H and V L domains which enables the sFv to form the desired structure for antigen binding For a review of sFv, see, Pluckthun in The Pharmacology ot Monoclonal Antibodies, Vol 1 13, Rosenburg and Moore eds , Springer- Verlag, New York, pp 269-315 (1994) The term "diabodies" refers to small antibody fragments with two antigen-binding sites, which fragments comprise a heavy-chain variable domain (V H ) connected to a light-chain variable domain (V L ) in the same polypeptide chain (V H - V L ) By using a linker that is too short to allow pairing between the two domains on the same chain, the domains are forced to pair with the complementary domains of another chain and create two antigen-binding sites Diabodies are described more fully in, for example. EP 404,097 WO 93/1 1 161 and Holhnger et al , Proc Natl Acad Sci USA. 90 6444-6448 ( 1993) An "isolated" antibody is one which has been identified and separated and/or recovered from a component of its natural environment Contaminant components of its natural environment are materials which would interfere with diagnostic or therapeutic uses for the antibody, and may include enzymes, hormones, and other proteinaceous or nonproteinaceous solutes In preferred embodiments, the antibody will be purified ( 1 ) to greater than 957c by weight of antibody as determined by the Lowry method, and most preferably more than 997c by weight, (2) to a degree sufficient to obtain at least 15 residues of N-terminal or internal amino acid sequence by use of a spinning cup sequenator, or (3) to homogeneity by SDS-PAGE under reducing or nonreducing conditions using Coomassie blue or, preferably, silver stain Isolated antibody includes the antibody in situ within recombinant cells since at least one component of the antibody's natural environment will not be present Ordinarily, however, isolated antibody will be prepared by at least one purification step The word "label" when used herein refers to a detectable compound or composition which is conjugated directly or indirectly to the antibody so as to generate a "labeled' antibody The label may be detectable by itself (e g , radioisotope labels or fluorescent labels) or. in the case of an enzy matic label, may catalyze chemical alteration of a substrate compound or composition w hich is detectable The label may also be a non-detectable entity such as a toxin By "solid phase" is meant a non-aqueous matrix to which the antibody of the present invention can adhere Examples of solid phases encompassed herein include those formed partially or entirely of glass (e g , controlled pore glass), polysacchaπdes (e g , agarose), polyacrylamides, polystyrene, poly v inyl alcohol and sihcones In certain embodiments, depending on the context, the solid phase can comprise the well ot an assay plate, in others it is a purification column (e g . an affinity chromatography column) This term also includes a discontinuous solid phase of discrete particles, such as those described in U S Patent No 4,275.149 A "liposome" is a small vesicle composed of various types of hpids phosphohpids and/or surfactant which is useful for delivery of a drug (such as a PRO polypeptide or antibody thereto) to a mammal The components of the liposome are commonly arranged in a bilayer formation, similar to the lipid arrangement of biological membranes A "small molecule' is defined herein to have a molecular weight below about 500 Daltons As shown below, Table I provides the complete source code for the ALIGN-2 sequence comparison computer program This source code may be routinely compiled for use on a UNIX operating system to provide the ALIGN-2 sequence comparison computer program In addition, Tables 2-5 show hypothetical exemplifications for using the below described method to determine % amino acid sequence identity (Tables 2-3) and % nucleic acid sequence identity (Tables 4-5) using the ALIGN-2 sequence comparison computer program, wherein "PRO" represents the amino acid sequence of a hypothetical PRO polypeptide of interest, "Comparison Protein" represents the amino acid sequence of a polypeptide against which the "PRO" polypeptide of interest is being compared, "PRO-DNA" represents a hypothetical PRO-encoding nucleic acid sequence of interest, "Comparison DNA" represents the nucleotide sequence of a nucleic acid molecule against which the "PRO-DNA" nucleic acid molecule of interest is being compared, "X", "Y", and "Z" each represent different hypothetical amino acid residues and "N", "L " and "V" each represent different hypothetical nucleotides Table 1 * C-C increased from 12 to 15 * Z is average of EQ / * B is average of ND * match with stop is _M; stop-stop 0, J (joker) match = 0 */ #define M -8 /* value of a match with a stop */ int day [26] [26] = = /* A B C D E F G H 1 J K L M N O P Q R S T U V W X Y Z*/ /* A */ 2, 0,-2, 0, 0, -4, 1, -1, -1, 0,-1,-2,-1, 0,_M, 1, 0,-2, 1, 1, 0.0,-6, 0,-3, 0}, /*B */ 0, 3,-4, 3, 2, -5, 0, 1, -2, 0, 0,-3.-2, 2,_M,-1, 1, 0, 0, 0, 0,-2,-5, 0,-3, 1}, /*C */ •2,-4,15,-5. ,-5 .-4 ,-3 ,-3 ,-2 , 0,-5,-6,-5,-4,_M, -3,-5,-4, 0,-2.0.-2.-8, 0, 0,-5}, /*D */ 0, 3,-5, 4, 3, -6, 1, 1, -2, 0, 0,-4.-3, 2,_M,-1, 2,-1, 0.0.0,-2,-7, 0,-4, 2}, /*E*/ 0, 2,-5, 3, 4, -5, 0, 1, -2, 0, 0,-3,-2, 1,_M,-1, 2,-1, 0, 0.0,-2,-7, 0,-4, 3}, /*F*/ -4,-5,-4,-6, -5 9 -5 -2 1, 0,-5, 2, 0,-4,_M,-5,-5,-4,-3,-3.0,-1, 0, 0, 7,-5}, /*G */ 1,0,-3, 1, 0, -5, 5, -2, -3, 0,-2,-4,-3, 0,_M,-l,-l,-3, 1, 0.0,-1,-7, 0,-5, 0}, /*H */ -1, 1,-3, 1, 1, -2, -2, 6, -2, 0, 0,-2,-2, 2,_M, 0, 3, 2,-1,-1.0.-2,-3, 0.0, 2}, 1*1*1 -1,-2,-2,-2 -2 1, -3, -2 5, 0,-2, 2, 2,-2,_M, -2,-2,-2,-1, 0, 0.4,-5.0,-1,-2}, 1* *1 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,_M, 0, 0, 0, 0, 0.0.0, 0, 0, 0, 0}, /*K */ -1,0,-5,0, 0, -5, -2. 0, -2, 0, 5,-3, 0, 1,_M,-1, 1, 3, 0, 0.0.-2,-3, 0,-4, 0}, /*L*/ -2,-3,-6.-4, -3, 2, -4, -2 2, 0,-3, 6, 4, -3,_M, -3,-2,-3,-3.-1, 0, 2,-2, 0,-1,-2}, /*M*/ -1,-2,-5,-3, -2, 0, -3, -2, 2, 0, 0, 4, 6,-2,_M,-2,-l, 0,-2.-1, 0.2.-4, 0,-2,-1}, /*N*/ 0, 2,-4, 2, 1, -4, 0, 2, -2, 0, 1,-3,-2, 2,_M,-1, 1, 0, 1, 0.0,-2,-4, 0,-2, 1}, /*0 */ M,_M,_M , M, M , M, M,_M,_M,_M,_M,_M,_M,_M, 0,_M,_M,_M,_M,_M,_M,_M,_M,_M,_M,_M}, /* p */ 1,-1,-3,-1,- -1 -5 -1 0 -2 0 -1 -3 -2 -1 M ,6 0 , 0, 1,0,0,-1,-6,0,-5,0}, /*Q*/ 0, 1,-5,2, 2, -5, -1, 3, -2, 0, 1, -2, -1, 1, M, 0, 4, 1,-1,-1,0,-2,-5,0,-4, 3}, /*R*/ -2,0,-4,-1,- -1 -4 -3 2 -2 0 3 -3 0 0, M 0 1, ,6,0,-1,0,-2,2,0,-4,0}, /*S*/ 1,0,0,0, 0, -3, 1, -1, -1, 0, 0, -3, -2, 1, M, 1, -1, 0,2, 1,0,-1,-2,0,-3,0}, I* Ύ */ 1,0,-2,0, 0, -3, 0, -1, 0, 0, 0, -1, -1, 0, M, 0, -1, -1, 1, 3,0,0,-5,0,-3,0}, /*U */ 0, 0, 0, 0, o, 0, 0, 0, 0, 0, 0, 0, 0, 0, M, 0, 0, 0, 0, 0.0, 0, 0, 0, 0, 0}, / * v * / 0,-2,-2,-2, -2 -1 -1 -2 4 0 -2 2 2, -2, " M -1 -2,,-2,-1,0,0,4,-6,0,-2,-2}, /*w*/ -6,-5,-8,-7, -7 0 -7 -3 -5 0 -3 -2 -4 -4 M ,-6 ,-5 ,2,-2,-5,0,-6,17, 0,0,-6}, /*x */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, M, 0, 0, 0,0,0,0,0,0,0,0,0}, /* Y*/ ■3,-3, 0,-4, ■ 4, 7, -5, 0, -1, 0, -4, -1, -2, -2, " M -5 -4 ,-4,-3,-3,0,-2, 0,0,10,-4}, ι*z*ι 0, 1,-5,2, 3, -5, 0, 2, -2, 0, 0, -2, -1, 1, M, 0, 3, 0, 0, 0, 0,-2,-6, 0,-4, 4} }; Table 1 (conf) /* */ ^include < stdιo.h > ^include < ctype.h > #defineMAXJMP 16 /* max jumps in a diag */ #defϊneMAXGAP 24 /* don't continue to penalize gaps larger than this */ #defineJMPS 1024 /* max j ps in an path */ #defineMX 4 /* sav e if there's at least MX-1 bases since last jmp */ #defineDMAT 3 /* value of matching bases */ #defineDMIS 0 /* penalty for mismatched bases */ #defineDINS0 /* penalty for a gap */ #defϊneDINSl /* penalty per base */ #definePINS0 /* penalty for a gap */ #definePINSl /* penalty per residue */ struct jmp { short n[MAXJMP], /* size of jmp (neg for dely) */ unsigned short x[MAXJMP] , /* base no of jmp in seq x */ /* limits seq to 2 Λ 16 - 1 */ struct diag { int score, /* score at last jmp */ long offset, /* offset of prev block */ short ljmp, /* current jmp index */ struct jmp jp; /* list of jmps */ }; struct path { int spc; /* number of leading spaces */ short nfJMPS]; /* size of jmp (gap) */ int x[JMPS]; /* loc of jmp (last elem before gap) */ }; char *ofιle; /* output file name */ char *namex[2]; /* seq names: getseqs() */ char *prog; /* prog name for err msgs */ char *seqx[2]; /* seqs: getseqs() */ int dmax; /* best diag: nw() */ int dmaxO, /* final diag */ int dna, /* set if dna maιn() */ int endgaps; /* set if penalizing end gaps */ int gapx, gapy; /* total gaps in seqs */ int lenO, lenl ; /* seq lens */ int ngapx, ngapy; /* total size of gaps */ int smax; /* max score: nw() */ int *xbm; /* bitmap for matching */ long offset, /* current offset in jmp file */ struct diag *dx; /* holds diagonals */ struct path PP[2]; /* holds path tor seqs */ char *calloc(), *malloc(), *ιndex(), *strcpy(), char *getseq(), *g_calloc(), Table 1 tcont') /* Needleman-Wunsch alignment program * * usage: progs filel file2 * where filel and fιle2 are two dna or two protein sequences * The sequences can be in upper- or lower-case an may contain ambiguity * Any lines beginning with ';', ' > ' or ' < ' are ignored * Max file length is 65535 (limited by unsigned short x in the jmp struct) * A sequence with 1/3 or more of its elements ACGTU is assumed to be DNA * Output is in the file "align. out" * * The program may create a tmp file in /tmp to hold into about traceback. * Original version developed under BSD 4.3 on a vax 8650 */ #include "nw.h" ^include "day.h" static _dbval[26] = { 1,14,2,13,0,0,4,11,0,0,12,0,3,15,0,0,0,5,6,8,8,7,9,0,10,0 }; static _pbval[26] = { 1, 2|(1< <('D'-'A'))|(1 < <('N'-'A')), 4, 8, 16, 32, 64, 128,256, OxFFFFFFF, 1< < 10, 1<<11, 1< <12, 1< <13, 1< <14, 1< < 15, 1< < 16, 1< < 17, 1< < 18, 1< < 19, 1< <20, 1< <21 1< <22, 1<<23, 1<<24, 1<<25|(1<<('E'-'A'))|(1<<('Q'-'A')) }; int ac; char *av[]; prog = av[0]; if (ac ! = 3) { fpπntf(stderr, "usage: %s filel file2\n", prog); fpπntf(stderr, "where filel and file2 are two dna or two protein sequences. \n"), fpπntf(stderr,"The sequences can be in upper- or lower-case\n"); fpπntf(stderr, " Any lines beginning with ';' or ' < ' are ιgnored\n"), fpπntf(stderr, "Output is in the file \"ahgn.out\"\n"); exit(l); } namex[0] = av[l]; namex[l] = av[2], seqx[0] = getseq(namex[0], &len0); seqxfl] = getseq(namex[l], &lenl); xbm = (dna)? _dbval : _pbval; endgaps = 0; /* 1 to penalize endgaps */ ofile = "ahgn.out"; /* output file */ nw(); /* fill in the matrix, get the possible jmps */ readjmpsO; /* get the actual jmps */ pπnt(); /* print stats, alignment */ cleanup(O), /* unlink any tmp files */ Table 1 (cont'l /* do the alignment, return best score' maιn() * dna: values in Fitch and Smith, PNAS, 80, 1382-1386, 1983 * pro: PAM 250 values * When scores are equal, we prefer mismatches to any gap, prefer * a new gap to extending an ongoing gap, and prefer a gap in seqx nw() nw { char *px, *py , /* seqs and ptrs */ int *ndely. *dely, /* keep track of dely */ int ndelx. delx; /* keep track of delx */ int *tmp, /* tor swapping rowO, rowl int mis, /* score for each type */ int insO, insi , /* insertion penalties */ register id; /* diagonal index */ register 1 J. /* jmp index */ register *col0, *coll , /* score for curr, last row */ register xx, yy, /* index into seqs */ dx = (struct diag *)g_calloc("to get diags", lenO + lenl + 1 , sizeof(struct diag)), ndely = (int *)g_caIloc( "to get ndely", lenl + 1 , sizeof(int)), dely = (int *)g_calloc("to get dely", lenl + 1 , sizeof(int)), colO = (int *)g_calloc("to get coIO", lenl + 1 , sizeof(int)), col l = (int *)g_calloc("to get coll ", lenl + 1 , sizeof(int)); insO = (dna)? DINSO : PINSO; insi = (dna)? DINS 1 : PINS1 ; smax = -10000; if (endgaps) { for (col0[0] = dely[0] = -insO, yy = 1 ; yy < = lenl ; yy + +) { col0[yy] = dely[yy] = col0[yy-l] - insi ; ndely[yy] = yy; } co!0[0] = 0, /* Waterman Bull Math Biol 84 */ } else for (yy = 1 ; yy < = lenl ; yy+ +) /* fill in match matrix */ for (px = seqx[0], xx = 1 ; xx < = lenO; px+ + , xx + +) { /* initialize first entry in col */ if (endgaps) { if (xx = = 1) coll [0] = delx = -(msO + insl), else coll tO] = delx = co!0[0] - insi ndelx = xx; } else { ndelx = 0, Table 1 (conf) ...nw seqx[l], yy = 1, yy < = lenl, pv++, yv + +) { mis = colOlyy-1], if (dna) mis + = (xbm[*px- A'j&xbm[*py-'A'])'> DMAT DMIS, else mis + = _day[*px-'A'][*py A'], /* update penalty for del in x seq, * favor new del ov er ongong del * ignore MAXGAP if weighting endgaps */ if (endgaps | | ndely[yy] < MAXGAP) { if (colO[yy] - insO > = dely[yy]) { delyfyy] = col0[yy] - (insO + insI), ndely [yy] = 1, } else { delyfyy] -= insi, ndely[yy]+ +, } } else { if (col0[yy] - (msO + insl) > = dely[yy]) { dely[yy] = colOh/y] (msO + insl), ndely [yy] = 1, } else ndely[yy] + + , } /* update penalty for del in y seq, * favor new del over ongong del */ if (endgaps | | ndelx < MAXGAP) { if (coll[yy-l] - insO >= delx) { delx = coll[yy-l] - (msO + insl), ndelx = 1, } else { delx -= insi; ndelx+ + , } } else { if (coll[yy-l] - (msO + insl) > = delx) { delx = coll[yy-l] - (msO + insl), ndelx = 1, } else ndelx + +, } /* pick the maximum score, we're favoring * mis over any del and delx over dely */ Table 1 (conf) ...nvs id = xx - yv + lenl - 1, if (mis > = delx && mis > = dely[yy]) collfyy] = mis, else if (delx > = dely[yy]) { coll[yy] = delx, i| = dx[ιd] ljmp, if (dxfid] jp n[0] && ('dna | | (ndelx > = MAXJMP && xx > dxfid] jp x[ιjl+MX) | | mis > dx[ιd] score+DINSO)) { dx[ιd] ιjmp+ +, if (++ιj >= MAXJMP) { wπtejmps(ιd), IJ = dx[ιd] ljmp = 0, dx[ιd] offset = offset offset += sizeof (struct jmp) + sιzeof(offset), } } dx[ιd] jp n[ιj] = ndelx. dx[ιd] jp x[ιj] = xx, dx[ιd] score = delx, } else { coll[yy] = dely[yy] ij = dx[ιd] ljmp, if (dx[ιd] jp n[0] && ('dna | | (ndely[yy] > = MAXJMP && xx > dx[ιd] jp x[ιj] + MX) | | mis > dx[ιd] score+DINSO)) { dxfid] ιjmp+ + , if (++ιj >= MAXJMP) { wπtejmps(ιd), dx[ιd] offset = offset, offset += sιzeof(struct jmp) + sizeof (offset), } } dx[ιd] jp n[ιj] = ndely [yy], dx[ιd] jp x[ιj] = xx, dxfid] score = dely[yy], } if (xx = = lenO && yv < lenl) { /* last col */ if (endgaps) coll[yy] -= ιnsO + ιnsl*(lenl-yy), if (col 1 [yy] > smax) { smax = coll[yy], dmax = id, } } } if (endgaps && xx < lenO) coll[yy-l] -= msO + ιnsl*(lenO-xx), if (coll[yy-l] > smax) { smax = coll[yy-l], dmax = id, } tmp = colO, colO = coll, coll = tmp, } (void) tree((char *)ndely), (void) free((char *)dely), (void) free((char *)col0), (void) free((char *)coll), } Table 1 (conf) /* * pπnt() - only routine visible outside this module * * static: * getmatO — trace back best path, count matches: pπnt() * pr_ahgn() - print alignment of described in array p[]: pπnt() * dumpblockO - dump a block of lines with numbers, stars: pr_ahgn() * nums() -- put out a number line: dumpblockO * put neO — put out a line (name, [num], seq, [num]). dumpblockO * stars() - -put a line of stars: dumpblockO * stπpnameO — strip any path and prefix from a seqname */ ^include "nw.h" ^define SPC 3 ^define P_LINE 256 /* maximum output line */ #define P SPC 3 /* space between name or num and seq */ extern day [26] [26]; int olen; /* set output line length */ FILE *fx; /* output file */ prmto print { int lx, ly, firstgap, lastgap; /* overlap */ if ((fx = fopen(ofile, "w")) = = 0) { fpπntf(stderr," %s: can't write %s\n", prog, ofile); cleanup(l); } fpπntf(fx, " < first sequence: %s (length = d)\n", namex[0], lenO); fpπntf(fx, " < second sequence: %s (length = %d)\n", namex[l], lenl); olen = 60; lx = lenO; ly = lenl ; firstgap = lastgap = 0; if (dmax < lenl - 1) { /* leading gap in x */ pp[0].spc = firstgap = lenl - dmax - 1 ; ly - = pp[0].spc; } else if (dmax > lenl - 1) { /* leading gap in y */ pp[l].spc = firstgap = dmax - (lenl - 1); lx -= pp[l].spc; } if (dmaxO < lenO - 1) { /* trailing gap in x */ lastgap = lenO - dmaxO -1 ; lx - = lastgap; } else if (dmaxO > lenO - 1) { /* trailing gap in y */ lastgap = dmaxO - (lenO - 1); ly -= lastgap; } getmat(lx, ly, firstgap, lastgap); pr alignO; Table 1 (conf) /* * trace back the best path, count matches */ static getmat(lx, ly. firstgap, lastgap) getmat int lx, ly, /* "core" (minus endgaps) */ int firstgap, lastgap, /* leading trailing overlap */ { int nm, lO, ii , sizO, sizl ; char outx[32], double pet; register nO, nl ; register char *p0, *pl ; /* get total matches, score */ pO = seqx[0] + pp[l].spc, pi = seqx[l] + pp[0].spc; nO = pp[l].spc + 1 , nl = pp[0].spc + 1 ; nm = 0, while ( *p0 && *pl ) { if (xbm[*pO-'A']&xbm[*pl-'A']) nm+ + ; if (nO+ + = = pp[0].x[iO]) sizO = pp[0].n[iO+ +]; if (nl + + = = pp[l].x[ιl]) sizl = pp[l].n[ιl + +]; p0+ + , pl + + , } /* pet homology: * if penalizing endgaps, base is the shorter seq * else, knock off overhangs and take shorter core */ if (endgaps) lx = (lenO < lenl )? lenO : lenl ; else lx = (lx < ly)? lx : ly; pet = 100.*(double)nm/(double)lx; fpπntf(fx, "\n"); fpπntf(fx, " < %d match%s in an overlap of %d: % .2f percent sιmιlaπty\n" nm, (nm = = l) 9 " " : "es", lx, pet); Table 1 (conf) fprintf(fx, " < gaps in first sequence: 7c d", gapx); ..getmat if (gapx) { (void) sprintf(outx, " (%d %s%s)", ngapx, (dna)? "base": "residue", (ngapx 1)? " ": "s"); fprintf(fx, " %s", outx); fprintf(fx, ", gaps in second sequence: 7td", gapy); if (gapy) { (void) sprintf(outx, " (%d %s s)", ngapy, (dna)? "base": "residue", (ngapy = = 1)? " " : "s"); fprintf(fx, " %s", outx); } if (dna) fprintf(fx, "\n < score: %d (match = %d, mismatch = 7cd, gap penalty = %d + %d per base)\n" smax, DMAT, DMIS, DINSO, DINS1); else fprintf(fx, "\n < score: %d (Dayhoff PAM 250 matrix, gap penalty = %d + %d per residue)\n", smax, PINSO, PINS1); if (endgaps) fprintf(fx, " < endgaps penalized, left endgap: %d %s%s, right endgap: d %s%s\n", firstgap, (dna)? "base" : "residue", (firstgap = = 1)? " " : "s", lastgap, (dna)? "base" : "residue", (lastgap = = 1)? "" : "s"); else fprintf(fx, " < endgaps not penalized\n"); static nm; /* matches in core — for checking */ static lmax; /* lengths of stripped file names */ static ij[2]; /* jmp index for a path */ static nc[2]; /* number at start of current line */ static ni[2]; /* current elem number — for gapping */ static siz[2]; static char *ps[2]; /* ptr to current element */ static char *po[2]; /* ptr to next output char slot */ static char out[2][P LINE] /* output line */ static char star[P LINE]; /* set by stars() */ * print alignment of described in struct path pp[] */ static pr align() pr align { int nn; /* char count */ int more; register i; for (i = 0, lmax = 0; i < 2; i + +) { nn = stripname(namex[i]); if (nn > lmax) lmax = nn; nc[i] = 1 ; ni[i] = 1 ; siz[i] = ij[i] = 0; ps[i] = seqx[i]; po[i] = out[i]; Table 1 (conf) for (nn = nm = 0, more = 1 , more, ) { ...pr_align for (l = more = 0, l < 2, ι + +) { /* * do we have more of this sequence 9 */ if ('*ps[>]) continue, more + + , if (pp[ι] spc) { /* leading space */ *po[ι] + + = ' , pp[ι] spc-, } else if (sιz[ι]) { /* in a gap */ *po[ι] + + = , sιz[ι]— , } else { /* we re putting a seq element */ *po[ι] = *ps[ι], if (ιslower(*ps[ι])) *ps[ι] = toupper(*ps[ι]), po[ι] + + , ps[ι] + + , /* * are we at next gap for this seq 9 */ if (nι[ι] = = pp[ι] x[ιj[ι]]) { /* * we need to merge all gaps * at this location */ sizfi] = pp[ι] n[ιj[ι] + +], while (nι[ι] = = pp[ι] x[ιj[ι]]) sizfi] + = pp[ι] n[.j[ι] + +], } m[ι] + + , } } if (+ +nn = = olen | | 'more && nn) { dumpblockO, for (ι = 0, l < 2, ι+ +) po[ι] = out[ι], nn = 0, } } } /* * dump a block of lines, including numbers, stars pr_ahgn() */ static dumpblockO dumpblock { register i, for (i = 0, l < 2, ι+ +) *po[ι]- = '\0', Table 1 (conf) ...dumpblock (void) putc('\n', fx), for(ι = 0; l < 2; ι++){ if (*out[ι] && (*out[ι] •= ' ' || *(po[ι]) '= ' ')){ if(. ==0) nums(ι); if 0 == 0&& *out[l]) stars(), puthne(ι), if (l == 0&&*out[l]) fpπntf(fx, star); if(. == 1) nums(ι); } } * put out a number line: dumpblockO */ static nums(ιx) nums int ix, /* index in out| { char nlιne[P_LINE] register register char *pn, *px, *py; for (pn = nline, i = 0; l < lmax+P SPC; ι+ + , pn++) *pn = ' '; for (i = nc[ιx], py = out[ιx]; *py; py++, pn++) { if (*py = " II *py == • -') *pn = ' '; else { if (i%10 == 0 I I (i == 1 &&nc[ιx] != 1)) { j = (. < 0)? -i : i; for (px = pn; j; j /= 10, px— ) *px = j%10 + '0'; if (i < 0) } else *pn = ι + + ; } } *pn = '\0'; nc[ιx] = i; for (pn = nline; *pn; pn++) (void) putc(*pn, fx); (void) putc('\n', fx); } /* * put out a line (name, [num], seq, [num]): dumpblockO */ static putline(ιx) putline int ix; { Table 1 (conf) ...putline register char *px, for (px = namex[ιx] 1 = 0, *px && *px ' = , px + + , 1 + + ) (void) putc(*px, fx), for(, i < lmax + P SPC, ι++) (void) putc( ', fx), /* these count from 1 * nι[] is current element (from 1) * nc[] is number at start of current line */ for (px = ou x], *px, px++) (void) putc(*px&0x7F, fx), /* * put a line of stars (seqs always in out[0], out[l]) dumpblockO */ static stars() stars { int i, register char *p0, *pl, ex, *px, if ('*out[0] 11 (*out[0] == ' '&& *(po[0]) == ' ') 11 '*out[l] 11 (*out[l] == " '&& *(po[l]) == ' ')) return, px = star, for(ι = lmax+P SPC, i, ι-) *px++ = ' , for (pO = out[0],pl = out[l], *p0 && *pl, p0+ +, pi + +) { if (ιsalpha(*pO) && ιsalpha(*pl)) { if (xbm[*pO-'A']&xbm[*pl-'A']) { ex = '*', nm+ +, } else if ('dna && _day[*pO-'A'][*pl-'A'] > 0) ex = ' ', else ex = ' , } else ex = ' , *px+ + = ex, } *px++ = '\n', *px = '\0 , Table 1 (conf) /* * strip path or prefix from pn, return len pr_ahgn() */ static stπpname(pn) stripname char *pn, /* file name (may be path) */ { register char *px, *p , py = 0, for (px = pn, *px, px+ + ) if (*px = = 7 ) py = px + 1 , if (py) (void) strcpy(pn, py), return(strlen(pn)), Table 1 (conf) /* * cleanupO - cleanup any tmp file * getseqO — read in seq, set dna, len, maxlen * g_calloc() — calloc() with error checkin * readjmpsO — et the good jmps, trom tmp file it necessary * writejmpsO — write a filled array of jmps to a tmp file: nw() */ ^include "nw.h" ^include < sys/file.h> char *jname = "/tmp/homgXXXXXX", /* tmp file for jmps */ FILE *fj; int cleanupO; /* cleanup tmp file */ long lseek(); /* * remove any tmp file if we blow */ cleanupO) cleanup int I; { if (fj) (void) unhnk(jname), exιt(ι); } /* * read, return ptr to seq, set dna, len, maxlen * skip lines starting with '; ' , ' < ' , or ' > ' * seq in upper or lower case */ char * getseq(file, len) getseq char *file; /* file name */ int *len; /* seq len * / { char lme[1024], *pseq; register char *px, *py; int natgc, tlen; FILE *fp; if ((fp = fopen(file,"r")) = = 0) { fpπntf(stderr, " %s: can't read %s\n", prog, file); exit(l); } tlen = natgc = 0; while (fgets(hne, 1024, fp)) { if (*lιne = = '; ' 1 1 *hne = = ' < ' 1 1 *hne = = ' > ') continue; for (px = line; *px ! = '\n' ; px+ +) if (ιsupper(*px) | | ιslower(*px)) tlen+ + ; } if ((pseq = malloc((unsigned)(tlen+6))) = = 0) { fpπntf(stderr," %s: mallocO failed to get %d bytes for %s\n", prog, tlen+6, file); exιt(l); } pseq[0] = pseqfl] = pseq[2] = pseq[3] = '\0'; Table 1 (conf) .getseq py = pseq + 4 *len = tlen, rewιnd(fp), while (fgets(lιne, 1024, fp)) { if (*hne = = ' , | | *lιne = = ' < ' | | *hne = = ' > ') continue, for (px = line, *px ' = '\n' , px + + ) { if (ιsupper(*px)) *py+ + = *px, else if (ιslower(*px)) *py + + = toupper(*px), if (ιndex("ATGCU",*(py-l))) natgc + + , } } *py + + = '\0' , *py = '\0', (void) fclose(fp), dna = natgc > (tlen/3), return(pseq +4), } char * g_calloc(msg, nx, sz) g_calloc char *msg, / /** pprrogram, calling routine */ int nx, sz; //** nnuumber and size of elements */ { char *px, *calloc(), if ((px = calloc((unsigned)nx, (unsigned)sz)) = = 0) { if (*msg) { fpπntf(stderr, " %s g_calloc() failed %s (n= %d, sz= %d)\n", prog, msg, nx, sz), exιt(l), } } return(px), * get final jmps from dx[| or tmp file, set pp[], reset dmax. mam() */ readjmpsO readjmps { int fd = -1 , register l, j, xx, if (fj) { (void) fclose(fj), if ((td = opentjname, O RDONLY, 0)) < 0) { fpπntf(stderr, " %s- can't open() %s\n' , prog, jname), cleanup(l), } } for (I = lO = ii = 0, dmaxO = dmax, xx = lenO, ; ι + +) { while (1) { for (j = dx[dmax].ιjmp, j > = 0 && dx[dmax].jp xfj] > = xx, j— ) Table 1 (conf) ...readjmps if 0 < 0 && dx[dmax]. offset && fj) { (void) lseek(fd. dx[dmax]. offset, 0), (void) read(fd, (char *)&dx[dmax] jp. sizeof(struct jmp)); (void) read(fd, (char *)&dx[dmax]. offset, sizeof(dx[dmax]. offset)), dx[dmax].ιjmp = MAXJMP-1, } else break; } if (l > = JMPS) { fpπntf(stderr, "%s: too many gaps in alιgnment\n", prog). cleanup ); } if (I > = 0) { siz = dx[dmax].jp.n[j]; if (siz < 0) { /* gap in second seq */ /* id = xx - yy + lenl - 1 */ pp[l].x[ιl] = xx - dmax + lenl - 1, gapy+ + ; ngapy -= siz; /* ignore MAXGAP when doing endgaps */ siz = (-siz < MAXGAP | | endgaps)? -siz : MAXGAP; il + + ; } else if (siz > 0) { /* gap in first seq */ gapx+ + ; ngapx + = siz; /* ignore MAXGAP when doing endgaps */ siz = (siz < MAXGAP | | endgaps)? siz : MAXGAP; ι0++; } } else break, } /* reverse the order of jmps */ for (j = 0, i0~; j < iO; j+ +, ι0~) { . = pp[0].n[j]; pp[0].n[j] = ρp[0].n[ι0]; pp[0].n[i0] = i; i = pp[0].xhj; pp[0].x[j] = pp[0].x[10]; pp[0].x[ι01 = i; } for(j = 0, il-;j < ιl;j+ + , ιl-) { i = pp[l].n[j]; PP[l].nDl = pp[l].n[ιl]; pp[l].n[ιl] = .; i = P p[l].x[j]; PP[l]. χ ϋ] = pp[l]. χ [ιlj; pp[lj. χ [ιl] = ι, } if (fd > = 0) (void) close(fd); if(fj){ (void) unhnk(jname), fj =0; offset = 0; } } Table 1 (conf) * write a filled jmp struct offset of the prev one (if any): nw() wπtejmps(ιx) writejmps { char *mktemp(); if (!fj) { if (mktemp(jname) < 0) { fpπntf(stderr, " %s. can't mktempO %s\n", prog, jname), cleanup(l); } if ((fj = fopen(jname, "w ")) = = 0) { fpπntt(stderr, " %s can't write %s\n", prog, j name), exιt(l ), } } (void) fwπte((char *)&dx[ιx] jp, sizeof (struct jmp), 1 , fj), (void) f πte((char *)&dx[ιx]. offset, sizeof(dx[ιx]. offset), 1 , fj); Table 2 PRO XXXXXXXXXXXXXXX (Length = 15 amino acids) Comparison Protein XXXXXYYYYYYY (Length = 12 amino acids) % amino acid sequence identity = (the number of identically matching amino acid residues between the two polypeptide sequences as determined by ALIGN-2) divided by (the total number of amino acid residues of the PRO polypeptide) = 5 divided bv 15 = 33.3 % Table 3 PRO XXXXXXXXXX (Length = 10 amino acids) Comparison Protein XXXXXYYYYYYZZYZ (Length = 15 amino acids) % amino acid sequence identity = (the number of identically matching amino acid residues between the two polypeptide sequences as determined by ALIGN-2) divided by (the total number of amino acid residues of the PRO polypeptide) = 5 divided by 10 = 50% Table 4 PRO-DNA NNNNNNNNNNNNNN (Length = 14 nucleotides) Comparison DNA NNNNNNLLLLLLLLLL (Length = 16 nucleotides) % nucleic acid sequence identity = (the number of identically matching nucleotides between the two nucleic acid sequences as determined by ALIGN-2) divided by (the total number of nucleotides of the PRO-DNA nucleic acid sequence) = 6 divided by 14 = 42 9% Table 5 PRO-DNA NNNNNNNNNNNN (Length = 12 nucleotides) Comparison DNA NNNNLLLVV (Length = 9 nucleotides) % nucleic acid sequence identity = (the number of identically matching nucleotides between the two nucleic acid sequences as determined by ALIGN-2) divided by (the total number of nucleotides of the PRO-DNA nucleic acid sequence) = 4 divided by 12 = 33.3 % II Compositions and Methods of the Im ention A Full-length PRO Polypeptides The present invention provides neyy ly identified and isolated nucleotide sequences encoding polypeptides referred to in the present application as PRO polypeptides In particular cDNAs encoding the PRO polypeptide has been identified and isolated, as disclosed in further detail in the Examples below As disclosed in the Examples below, cDNA clones encoding PRO polypeptides have been deposited with the ATCC The actual nucleotide sequences of the clones can readily be determined by the skilled artisan by sequencing of the deposited clones using routine methods in the art The predicted amino acid sequences can be determined from the nucleotide sequences using routine skill For the PRO polypeptides and encoding nucleic acids described herein, Applicants have identified what is believed to be the reading frame best identifiable with the sequence information available at the time B PRO Variants In addition to the full length native sequence PRO polypeptides described herein it is contemplated that PRO variants can be prepared PRO variants can be prepared bv introducing appropriate nucleotide changes into the PRO DNA, and/or by synthesis of the desired PRO polypeptide Those skilled in the art will appreciate that amino acid changes may alter post-translational processes of the PRO polypeptide, such as changing the number or position of glycosylation sites or altering the membrane anchoring characteristics Variations in the native full-length sequence PRO polypeptide or in various domains of the PRO polypeptide described herein, can be made, for example, using any of the techniques and guidelines for conservative and non-conservative mutations set forth, for instance, in U S Patent No 5,364,934 Variations may be a substitution, deletion or insertion of one or more codons encoding the PRO polypeptide that results in a change in the amino acid sequence of the PRO polypeptide as compared with the native sequence PRO polypeptide Optionally the variation is by substitution of at least one amino acid with any other amino acid in one or more of the domains of the PRO polypeptide Guidance in determining which amino acid residue may be inserted, substituted or deleted without adversely affecting the desired activity may be found bv comparing the sequence of the PRO polypeptide with that of homologous known protein molecules and minimizing the number of amino acid sequence changes made in regions of high homology Amino acid substitutions can be the result of replacing one amino acid with another amino acid having similar structural and/or chemical properties such as the replacement of a leucine with a seπne, t e , conservative amino acid replacements Insertions or deletions may optionally be in the range of about 1 to 5 amino acids The variation allowed may be determined by systematically making insertions, deletions or substitutions of amino acids in the sequence and testing the resulting variants for activity exhibited by the full length or mature native sequence PRO polypeptide fragments are provided herein Such fragments may be truncated at the N-terminus or C-terminus, or may lack internal residues, for example, when compared with a full length native protein Certain fragments lack amino acid residues that are not essential tor a desired biological activ ity of the PRO polypeptide PRO fragments may be prepared by any of a number of conventional techniques Desired peptide fragments may be chemically synthesized An alternative approach involves generating PRO fragments by enzymatic digestion, e e , by treating the protein with an enzvme known to cleave proteins at sites defined by particular amino acid residues or by digesting the DNA with suitable restriction enzymes and isolating the desired fragment Yet another suitable technique involves isolating and amplif ing a DNA fragment encoding a desired polypeptide fragment by polymerase chain reaction (PCR) Oligonucleotides that define the desired termini of the DNA fragment are employed at the 5 and 3 primers in the PCR Preferably, PRO polypeptide fragments share at least one biological and/or immunological activity with the native PRO polypeptide shown in the accompanying figures In particular embodiments, consery ati ve substitutions of interest are shown in Table 6 under the heading of preferred substitutions If such substitutions result in a change in biological activity, then more substantial changes, denominated exemplary substitutions in Table 6, or as further described below in reference to amino acid classes, are introduced and the products screened Table 6 Original Exemplary Preferred Residue Substitutions Substitutions Arg (R) lys, gin, asn lys Asn (N) gin, his, lys, arg gin Asp (D) glu glu Cys (C) ser ser Gln (Q) asn asn Glu (E) asp asp Gly (G) pro, ala ala His (H) asn, gin, lys, arg arg He (I) leu, val, met, ala, phe, norleucine leu Leu (L) norleucine, lie, val, met, ala, phe de Lys (K) arg, gin, asn arg Met (M) leu, phe, lie leu Phe (F) leu, val, lie, ala, tyr leu Pro (P) ala ala Ser (S) thr thr Thr (T) ser ser Trp (W) tyr, phe tyi Tyr (Y) trp, phe, thr, ser phe Val (V) lie, leu, met, phe, ala, norleucine leu Substantial modifications in function or immunological identity of the PRO polypeptide are accomplished by selecting substitutions that differ significantly in their effect on maintaining (a) the structure of the polypeptide backbone in the area of the substitution, for example, as a sheet or helical conformation (b) the charge or hydrophobicity of the molecule at the target site, or (c) the bulk of the side chain Naturally occurring residues ai e divided into groups based on common side-chain properties (1) hydrophobic norleucine, met, ala, val, leu, lie, (2) neutral hydrophilic cys, ser, thr (3) acidic asp. glu, (4) basic asn, gin, his, lys, arg, (5) residues that influence chain orientation gly pro, and (6) aromatic trp, tyr, phe Non-conservative substitutions will entail exchanging a member of one of these classes for another class Such substituted residues also may be introduced into the conservative substitution sites or more preferably, into the remaining (non-conserved) sites The variations can be made using methods known in the art such as ohgonucleotide-mediated (site- directed) mutagenesis, alanine scanning, and PCR mutagenesis Site-directed mutagenesis [Carter et al Nucl Acids Res , K3 4331 ( 1986), Zoller et al , Nucl Acids Res , JO 6487 ( 1987)], cassette mutagenesis [Wells et al Gene. 34 315 (1985)], restriction selection mutagenesis [Wells et l , Philos Trans R Soc London SerA. 317 415 (1986)] or other known techniques can be performed on the cloned DNA to produce the PRO variant DNA Scanning amino acid analysis can also be employed to identity one or more amino acids along a contiguous sequence Among the preferred scanning amino acids are relatively small neutral amino acids Such amino acids include alanine, glycine, seπne, and cysteine Alanine is typically a preferred scanning amino acid among this group because it eliminates the side-chain beyond the beta-carbon and is less likely to alter the main-chain conformation of the variant [Cunningham and Wells, Science. 244 1081 -1085 ( 1989)] Alanine is also typically preferred because it is the most common ammo acid Further, it is frequently found in both buried and exposed positions [Creighton, The Proteins, (W H Freeman & Co , N Y ), Chothia, J Mol Biol , 150 1 (1976)] If alanine substitution does not yield adequate amounts of variant, an lsoteπc amino acid can be used C Modifications of PRO Polypeptides Covalent modifications of PRO polypeptides are included within the scope of this invention One type of covalent modification includes reacting targeted amino acid residues of a PRO polypeptide with an organic denvatizing agent that is capable of reacting with selected side chains or the N- or C- terminal residues of the PRO polypeptide Deπvatization with bifunctional agents is useful, for instance, for cross nking PRO polypeptides to a water-insoluble support matrix or surface for use in the method for purifying anti-PRO antibodies, and vice-versa Commonly used crosshnking agents include, e g , l , 1 -bιs(dιazoacetyl)-2-phenylethane, glutaraldehyde, N- hydroxysuccinimide esters, for example, esters with 4-azιdosalιcylιc acid, homobif unctional lmidoesters. including disuccinimidyl esters such as 3,3'-dιthιobιs(succιnιmιdylpropιonate), bifunctional maleimides such as bis-N- maleιmιdo-l ,8-octane and agents such as methyl-3-[(p-azιdophenyl)dιthιo]propιoιmιdate Other modifications include deamidation of glutaminyl and asparaginyl residues to the corresponding glutamyl and aspartyl residues, respectively, hydroxylation of pro ne and lysine, phosphorylation ot hydroxyl groups of seryl or threonyl residues, methylation of the α-amino groups of lysine, arginine, and histidine side chains [T E Creighton, Proteins Structure and Molecular Properties. W H Freeman & Co , San Francisco, pp 79-86 (1983)], acetylation of the N-terminal amine, and amidation of any C-terminal carboxyl group Another type of covalent modification of the PRO polypeptide included within the scope of this invention comprises altering the natiy e glycosylation pattern of the polypeptide ' Altering the nam e glycosylation pattern is intended for purposes herein to mean deleting one or more carbohydrate moieties found in native sequence PRO polypeptides (either by removing the underlying glycosylation site or by deleting the glycosylation bv chemical and/or enzymatic means), and/or adding one or more glycosylation sites that are not present in the nam e sequence PRO polypeptide In addition, the phrase includes qualitative changes in the glycosylation of the na e proteins, involving a change in the nature and proportions of the various carbohydrate moieties present Addition of glycosylation sites to the PRO polypeptide may be accomplished by altering the amino acid sequence The alteration may be made, tor example, by the addition of, or substitution by, one or more seπne or threon e residues to the native sequence PRO polypeptide (for O-linked glycosylation sites) The PRO polypeptide amino acid sequence may optionally be altered through changes at the DNA ley el particularly by mutating the DNA encoding the PRO polypeptide at preselected bases such that codons are generated that yy ill translate into the desired amino acids Another means of increasing the number ot carbohydrate moieties on the PRO polypeptide is by chemical or enzymatic coupling of glycosides to the polypeptide Such methods are described in the art, e g , in WO 87/05330 published 1 1 September 1987, and in Aphn and Wπston CRC Cπt Rey Biochem . pp 259-306 (1981 ) Removal of carbohydrate moieties present on the PRO polypeptide may be accomplished chemically or enzymatically or by mutational substitution of codons encoding tor amino acid residues that serve as targets for glycosylation Chemical deglycosylation techniques are known in the art and described, for instance, by Hakimuddin. ef a/ . Arch Biochem Biophvs , 259 52 (1987) and by Edge et al , Anal Biochem , 1 18 131 (1981 ) Enzymatic cleavage of carbohydrate moieties on polypeptides can be achieved by the use of a variety of endo- and exo-glycosidases as described by Thotakura et al , Meth Enzymol . 138 350 (1987) Another type of covalent modification of PRO polypeptides comprises linking the PRO polypeptide to one of a variety of nonproteinaceous polymers, e g , polyethylene glycol (PEG), polypropylene glycol, or polyoxyalkylenes, in the manner set forth in U S Patent Nos 4,640,835, 4 496,689, 4,301 ,144, 4,670,417, 4,791,192 or 4, 179,337 The PRO polypeptide of the present invention may also be modified in a way to form a chimeric molecule comprising a PRO polypeptide fused to another, heterologous polypeptide or amino acid sequence In one embodiment, such a chimeric molecule comprises a fusion of the PRO polypeptide with a tag polypeptide which provides an epitope to which an anti-tag antibody can selectively bind The epitope tag is generally placed at the amino- or carboxyl- terminus of the PRO polypeptide The presence of such epitope-tagged forms of the PRO polypeptide can be detected using an antibody against the tag polypeptide Also, provision of the epitope tag enables the PRO polypeptide to be readily purified by affinity purification using an anti-tag antibody or another type of affinity matrix that binds to the epitope tag Various tag polypeptides and their respective antibodies are well known in the art Examples include poly-histidine (poly-His) or poly-histidine-glycine (poly- His-gly) tags, the flu HA tag polypeptide and its antibody 12CA5 [Field et al , Mol Cell Biol . 8 2159-2165 (1988)], the c-myc tag and the 8F9, 3C7, 6E10, G4, B7 and 9E10 antibodies thereto [Evan et al , Molecular and Cellular Biology. 5 3610-3616 (1985)], and the Herpes Simplex virus glycoprotein D (gD) tag and its antibody [Paborsky etal , Protein Engineering.3(6) 547-553 ( 1990)] Other tag polypeptides include the Flag-peptide [Hopp e?a/ . BιoTechnology, 6 1204-1210 ( 1988)]. the KT3 epitope peptide [Martin etal , Science.255 192-194 (1992)]. an α-tubulin epitope peptide [Skinner et al . J Biol Chem , 266 15163- 15166 ( 1991 )] and the T7 gene 10 protein peptide tag [Lutz-Freyermuth et al . Proc Natl Acad Sci USA, 87 6393-6397 ( 1990)] In an alternative embodiment, the chimeric molecule may comprise a fusion ot the PRO polypeptide with an immunoglobulm or a particular region of an immunoglobulm For a bivalent form of the chimeric molecule (also referred to as an "immunoadhesm " ), such a fusion could be to the Fc region ot an IgG molecule The lg fusions preferably include the substitution ot a soluble (transmembrane domain deleted or inactivated) form of a PRO polypeptide in place of at least one variable region within an lg molecule In a particularly preferred embodiment the immunoglobulm fusion includes the hinge, CH2 and CH3, or the hinge, CH 1 , CH2 and CH3 regions of an IgG 1 molecule For the production of immunoglobulm fusions see also, U S Patent No 5,428.130 issued June 27, 1995 D Preparation of PRO Polypeptides The description below relates primarily to production of PRO polypeptides by culturing cells transformed or transfected with a vector containing PRO polypeptide nucleic acid It is. of course, contemplated that alternative methods, which are well known in the art, may be employed to prepare PROpolypeptides For instance, the PRO polypeptide sequence, or portions thereof, may be produced by direct peptide synthesis using solid-phase techniques [see, e g , Stewart etal , Solid-Phase Peptide Synthesis, W H Freeman Co , San Francisco, CA (1969), Merπfield, J Am Chem Soc . 85 2149-2154 (1963)] In vitro protein synthesis may be performed using manual techniques or by automation Automated synthesis may be accomplished, for instance, using an Applied Biosystems Peptide Synthesizer (Foster City, CA) using manufacturer's instructions Various portions of the PRO polypeptide may be chemically synthesized separately and combined using chemical or enzymatic methods to produce the full-length PRO polypeptide 1 Isolation of DNA Encoding PRO Polypeptides DNA encoding PRO polypeptides may be obtained from a cDNA library prepared from tissue believed to possess the PRO mRNA and to express it at a detectable level Accordingly, human PRO DNA can be conveniently obtained from a cDNA library prepared from human tissue, such as described in the Examples The PRO-encoding gene may also be obtained from a genomic library or by known synthetic procedures (e g , automated nucleic acid synthesis) Libraries can be screened with probes (such as antibodies to the PRO polypeptide or oligonucleotides of at least about 20-80 bases) designed to identify the gene of interest or the protein encoded by it Screening the cDNA or genomic library with the selected probe may be conducted using standard procedures, such as described in Sambrook et al , Molecular Cloning A Laboratory Manual (New York Cold Spring Harbor Laboratory Press, 1989) An alternative means to isolate the gene encoding the PRO polypeptide is to use PCR methodology [Sambrook et al , supta, Dieffenbach et al , PCR Primer A Laboratory Manual (Cold Spring Harbor Laboratory Press, 1995)] The Examples below describe techniques for screening a cDNA library The oligonucleotide sequences selected as probes should be of sufficient length and sufficiently unambiguous that false positives are minimized The oligonucleotide is preferably labeled such that it can be detected upon hybridization to DNA in the library being screened Methods of labeling are well known in the art, and include the use of radiolabels like P-labeled ATP, biotinylation or enzyme labeling Hybridization conditions, including moderate stringency and high stringency, are provided in Sambrook et al . supta Sequences identified in such library screening methods can be compared and aligned to other known sequences deposited and available in public databases such as GenBank or other private sequence databases Sequence identity (at either the amino acid or nucleotide level ) within defined regions of the molecule or across the full-length sequence can be determined using methods known in the art and as described herein Nucleic acid having protein coding sequence may be obtained by screening selected cDNA or genomic libraries using the deduced amino acid sequence disclosed herein tor the first time, and. it necessary, using conventional primer extension procedures as described in Sambrook et al , supta, to detect precursors and processing intermediates of mRNA that may not have been reverse-transcribed into cDNA 2 Selection and Transformation of Host Cells Host cells are transfected or transformed with expression or cloning vectors described herein for PRO polypeptide production and cultured in conventional nutrient media modified as appropriate tor inducing promoters, selecting transformants, or amplifying the genes encoding the desired sequences The culture conditions, such as media, temperature, pH and the like, can be selected by the skilled artisan without undue expeπmentation In general, principles, protocols, and practical techniques for maximizing the productivity of cell cultures can be found in Mammalian Cell Biotechnology a Practical Approach. M Butler, ed (IRL Press, 1991 ) and Sambrook et al , supra Methods of eukaryotic cell transfection and prokaryotic cell transformation are known to the ordinarily skilled artisan, for example, CaCL, CaP0 4 , hposome-mediated and electroporation Depending on the host cell used, transformation is performed using standard techniques appropriate to such cells The calcium treatment employing calcium chloride, as described in Sambrook et al , supia or electroporation is generally used for prokaryotes Infection with Agrobactenum tumefaciens is used for transformation ot certain plant cells, as described by Shaw et al , Gene, 23 315 ( 1983) and WO 89/05859 published 29 June 1989 For mammalian cells without such cell walls, the calcium phosphate precipitation method of Graham and van der Eb, Virology, 52456- 457 (1978) can be employed General aspects of mammalian cell host system transfections haye been described in U S Patent No 4,399,216 Transformations into yeast are typically carried out according to the method of Van Solingen ef α/ . J Bact , 130 946 (1977) and Hsiao etal , Proc Natl Acad Sci (USA). 76 3829 (1979) However, other methods for introducing DNA into cells, such as by nuclear microinjection, electroporation, bacterial protoplast fusion with intact cells, or polycations, e g , polybrene, polyornithine, may also be used For various techniques for transforming mammalian cells, see, Keown etal , Methods in Enzymology, 185 527-537 (1990) and Mansour et al , Nature. 336 348-352 (1988) Suitable host cells for cloning or expressing the DNA in the vectors herein include prokaryote, yeast, or higher eukaryote cells Suitable prokaryotes include but are not limited to eubacteπa, such as Gram-negative or Gram-positive organisms, for example, Enterobacteπaceae such as E coli Various E coli strains are publicly available such as £ coli Kl 2 strain MM294 (ATCC 31 446) E coli X 1776 (ATCC 31 537) E coli strain W31 10 (ATCC 27 325) and K5772 (ATCC 53 635) Other suitable prokaryotic host cells include Enterobacteπaceae such asEscherichia. e g E coli. Entetobactei ιnιa, Klebsιella, Pιoteus, Salmonella e e Salmonella phimiu turn Serratia, e g Setiatia mai cescans and Sluqella as well as Bacilli such as B subtilis and B hchenifoi is (e e B licheniformis 4 IP disclosed in DD 266,710 published 12 April 1989) Pseudomonas such as P aetuginosa and Streptom\ces These examples are illustrative rather than limiting Strain W31 10 is one particularly preferred host or parent host because it is a common host strain for recombinant DNA product fermentations Preferably, the host cell secretes minimal amounts ot proteolytic enzymes For example strain W 31 10 may be modified to effect a genetic mutation in the genes encoding proteins endogenous to the host with examples of such hosts including E coli W31 10 strain 1 A2 which has the complete genotype tonA E coli W31 10 strain 9E4 which has the complete genotype tonA ptι3 E coli W31 10 strain 27C7 (ATCC 55,244) which has the complete genotype tonA ptr3 phoA El 5 (argF-lac)169 degP o pT kaif , E coli W31 10 strain 37D6 which has the complete genotype tonA pti ? phoA E15 (argF lac)169 deςP o pT ιbs7 ihG kaif, E coli W31 10 strain 40B4 w hich is strain 37D6 with a non kanamycin resistant deςP deletion mutation and an E coli strain having mutant peπplasmic protease disclosed in U S Patent No 4,946 783 issued 7 August 1990 Alternatively in \ ιtιo methods of cloning, e g , PCR or other nucleic acid polymerase reactions are suitable In addition to prokaryotes, eukaryotic microbes such as filamentous fungi or yeast are suitable cloning or expression hosts for PRO-encoding vectors Saccharom\ces cerevisiae is a commonly used lower eukaryotic host microorganism Others include Schιzosaccharom\ces pombe (Beach and Nurse, Nature, 290 140 [1981 ], EP 139,383 published 2 May 1985), eromyces hosts (U S Patent No 4,943 529, Fleer et al , Bio/Technology. 9 968-975 (1991 )) such as, e g , K lactts (MW98-8C, CBS683, CBS4574 Louyencourt et al , J Bacteπol . 737 [1983]), K fiagihs (ATCC 12,424) K bulgancus (ATCC 16 045), K (ATCC 24,178), K waltu (ATCC 56,500), K drosophilarum (ATCC 36,906, Van den Berg et al , Bio/Technology, 8 135 ( 1990)), K thermotolerans, and K marxianus (EP 402, 226), Pichiapastons (EP 183 070, Sreekπshnaefα/ , J Basic Microbiol , 28 265-278 [ 19881), Candida Trichoderma reesιa (EP 244,234) Nemos pot a ctassa (Case etal , Proc Natl Acad Sci USA, 76 5259-5263 [1979]), such as Sclmanmonnces otcidentalts (EP 394,538 published 31 October 1990), and filamentous fungi such as, e g , Neurospoia Penicillium, To pocladium (WO 91/00357 published 10 January 1991 ), and Aspergillus hosts such as A nidulans (Ballance et al , Biochem Biophvs Res Commun , 1 12 284-289 [1983], Tilburn et al , Gene, 26 205 221 [ 1983], Yelton et al , Proc Natl Acad Sci USA, 81 . 1470-1474 [1984]) and A mgei (Kelly and Hynes EMBO J . 4 475-479 [1985]) Methylotropic yeasts are suitable herein and include, but are not limited to, yeast capable of growth on methanol selected from the genera consisting of Hansenula, Candida Kloecketa Piclua Saccltaromyces Torulopsis and Rhodotorula A list of specific species that are exemplary of this class of yeasts may be found in C Anthony, The Biochemistry of Methylotrophs. 269 ( 1982) Suitable host cells for the expression of glycosylated PRO polypeptides are derived from multicellular organisms Examples of invertebrate cells include insect cells such as Drosophila S2 and Spodoptera Sf9, as well as plant cells Examples of useful mammalian host cell lines include Chinese hamster ovary (CHO) and COS cells More specific examples include monkey kidney CV 1 line transformed by S V40 (COS-7, ATCC CRL 1651 ), human embryonic kidney line (293 or 293 cells subcloned tor growth in suspension culture. Graham et al , J Gen Virol 36 59 (1977)) Chinese hamster o arycellsADHFR (CHO, Urlaub and Chasm Proc Natl Acad Sci USA 77 4216 (1980)). mouse serto cells (TM4. Mather. Biol Reprod , 23 243-251 ( 1980)), human lung cells (W138, ATCC CCL 75). human In er cells (Hep G2, HB 8065), and mouse mammary tumor (MMT 060562, ATCC CCL51 ) The selection ot the appropriate host cell is deemed to be within the skill in the art 3 Selection and Use of a Rep cable Vector The nucleic acid (e g , cDNA or genomic DNA) encoding PRO polypeptides may be inserted into a rephcable vector for cloning (amplification of the DNA) or for expression Various vectors are publicly available The vector may, for example, be in the form of a plasmid, cos id viral particle, or phage The appropriate nucleic acid sequence may be inserted into the vector by a variety ot procedures In general, DNA is inserted into an appropriate restriction endonuclease sιte(s) using techniques known in the art Vector components generally include, but are not limited to, one or more of a signal sequence, an origin ot replication, one or more marker genes an enhancer element, a promoter, and a transcription termination sequence Construction of suitable yectors containing one or more of these components employs standard ligation techniques which are known to the skilled artisan The PRO polypeptide may be produced recombinantly not only directly, but also as a fusion polypeptide with a heterologous polypeptide, which may be a signal sequence or other polypeptide having a specific cleavage site at the N-terminus of the mature protein or polypeptide In general, the signal sequence may be a component of the vector, or it may be a part of the PRO-encoding DNA that is inserted into the vector The signal sequence may be a prokaryotic signal sequence selected, for example, from the group ot the alkaline phosphatase, penicillmase, lpp, or heat-stable enterotoxin II leaders For yeast secretion the signal sequence may be, e g., the yeast lnvertase leader, alpha factor leader (including Saccharonnces and Kluweronnces α-factor leaders, the latter described in U S Patent No 5,010,182), or acid phosphatase leader, the C albicans glucoamylase leader (EP 362,179 published 4 April 1990), or the signal described in WO 90/13646 published 15 November 1990 In mammalian cell expression, mammalian signal sequences may be used to direct secretion of the protein, such as signal sequences from secreted polypeptides of the same or related species, as well as viral secretory leaders Both expression and cloning vectors contain a nucleic acid sequence that enables the vector to replicate in one or more selected host cells Such sequences are well known for a variety of bacteria, yeast, and viruses The origin of replication from the plasmid pBR322 is suitable for most Gram-negative bacteria, the 2μ plasmid origin is suitable for yeast, and various viral origins (SV40, polyoma, adenovirus, VSV or BPV) are useful for cloning vectors in mammalian cells Expression and cloning vectors will typically contain a selection gene, also termed a selectable marker Typical selection genes encode proteins that (a) confer resistance to antibiotics or other toxins, e g , ampicilhn, neomycin, methotrexate, or tetracychne, (b) complement auxotrophic deficiencies, or (c) supply critical nutrients not available from complex media, e g , the gene encoding D-alamne racemase for Bacilli An example of suitable selectable markers for mammalian cells are those that enable the identification of cells competent to take up the PRO-encoding nucleic acid, such as DHFR or thymidine kinase An appropriate host cell when wild-type DHFR is employed is the CHO cell line deficient in DHFR activity , prepared and propagated as described by Urlaub et al . Proc Natl Acad Sci USA 77 4216 (1980) A suitable selection gene tor use in yeast is the tip] gene present in the yeast plasmid YRp7 [Stinchcomb et al Nature. 282 39 (1979). Kingsman et al , Gene, 7 141 ( 1979), Tschemper et al , Gene. 10 157 ( 1980)] The tιp\ gene provides a selection marker for a mutant strain ot yeast lacking the ability to grow in tryptophan, for example ATCC No 44076 or PEP4- 1 [Jones, Genetics, 85 12 ( 1977)] Expression and cloning vectors usually contain a promoter operably linked to the PRO-encoding nucleic acid sequence to direct mRNA synthesis Promoters recognized by a variety of potential host cells are well known Promoters suitable for use with prokaryotic hosts include the β-lactamase and lactose promoter systems [Chang et al , Nature. 275 615 ( 1978), Goeddel et al Nature, 281 544 (1979)], alkaline phosphatase. a tryptophan (trp) promoter system [Goeddel, Nucleic Acids Res , 8 4057 (1980), EP 36,776], and hybrid promoters such as the tac promoter [deBoer et al , Proc Natl Acad Sci USA, 80 21 -25 ( 1983)] Promoters for use in bacterial systems also will contain a Shine-Dalgarno (S D ) sequence operably linked to the DNA encoding the PRO polypeptide Examples of suitable promoting sequences for use with yeast hosts include the promoters tor 3- phosphoglycerate kinase [Hitzeman et al , J Biol Chem , 255 2073 ( 1980)] or other glycolytic enzymes [Hess et al , J Adv Enzyme Reg , 7 149 ( 1968), Holland. Biochemistry, J7 4900 ( 1978)], such as enolase, giyceraldehyde- 3-phosphate dehydrogenase, hexokinase, pyruvate decarboxylase, phosphofructokinase, glucose-6-phosphate isomerase, 3-phosphoglycerate mutase, pyruvate kinase, tπosephosphate isomerase, phosphoglucose isomerase, and glucokinase Other yeast promoters, which are inducible promoters having the additional advantage of transcription controlled by growth conditions, are the promoter regions for alcohol dehydrogenase 2, isocytochrome C, acid phosphatase, degradative enzymes associated with nitrogen metabolism, metallothionein, glyceraldehyde-3- phosphate dehydrogenase, and enzymes responsible for maltose and galactose utilization Suitable vectors and promoters for use in yeast expression are further described in EP 73,657 PRO transcription from vectors in mammalian host cells is controlled, for example, by promotei s obtained from the genomes of viruses such as polyoma virus, towlpox virus (UK 2,21 1 ,504 published 5 July 1989), adenovirus (such as Adenovirus 2), bovine papilloma virus, avian sarcoma virus, cytomegalovirus, a retrovirus, hepatitis-B virus and Simian Virus 40 (SV40), from heterologous mammalian promoters, e g , the actin promoter or an immunoglobulm promoter, and from heat-shock promoters, provided such promoters are compatible with the host cell systems Transcription of a DNA encoding the PRO polypeptide by higher eukaryotes may be increased by inserting an enhancer sequence into the vector Enhancers are cis-acting elements of DNA, usually about from 10 to 300 bp, that act on a promoter to increase its transcription Many enhancer sequences are now known from mammalian genes (globin, elastase, albumin, α-fetoprotein, and insulin) Typically, however, one will use an enhancer from a eukaryotic cell virus Examples include the S V40 enhancer on the late side of the replication origin (bp 100-270), the cytomegalovirus early promoter enhancer, the polyoma enhancer on the late side of the replication origin, and adenovirus enhancers The enhancer may be spliced into the vector at a position 5' or 3' to the PRO polypeptide coding sequence, but is preferably located at a site 5' from the promoter Expression vectors used in eukaryotic host cells (yeast, fungi, insect, plant, animal, human, or nucleated cells from other muiticellular organisms) w ill also contain sequences necessary for the termination of transcription and for stabilizing the mRN A Such sequences are commonly ayailable from the 5' and. occasionally 3 untranslated regions of eukaryotic or v iral DN As or cDN As These regions contain nucleotide segments transci ibed as polyadenylated fragments in the untranslated portion of the mRNA encoding the PRO polypeptide Still other methods vectors, and host cells suitable tor adaptation to the synthesis of PRO polypeptides in recombinant vertebrate cell culture are described in Gething et al Nature, 293 620-625 ( 1981 ), Mantei et al Nature. 281 40-46 (1979). EP 1 17,060, and EP 1 17,058 4 Detecting Gene Amplification/Expression Gene amplification and/or expression may be measured in a sample directly, for example, by conventional Southern blotting, Northern blotting to quantitate the transcription of mRNA [Thomas, Proc Natl Acad Sci USA. 77 5201-5205 (1980)], dot blotting (DNA analysis), or in situ hybridization, using an appropriately labeled probe based on the sequences provided herein Alternatively, antibodies may be employed that can recognize specific duplexes, including DNA duplexes, RNA duplexes, and DNA-RNA hybrid duplexes or DNA-protein duplexes The antibodies in turn may be labeled and the assay may be carried out where the duplex is bound to a surface, so that upon the formation of duplex on the surface, the presence of antibody bound to the duplex can be detected Gene expression, alternatively, may be measured by immunological methods, such as immunohistochemical staining of cells or tissue sections and assay of cell culture or body fluids, to quantitate directly the expression of gene product Antibodies useful for immunohistochemical staining and/or assay of sample fluids may be either monoclonal or polyclonal, and may be prepared in any mammal Conveniently, the antibodies may be prepared against a native sequence PRO polypeptide or against a synthetic peptide based on the DNA sequences provided herein or against exogenous sequence fused to PRO DNA and encoding a specific antibody epitope 5 Purification of PRO Polypeptides Forms of PRO polypeptides may be recovered from culture medium or from host cell lysates If membrane-bound, it can be released from the membrane using a suitable detergent solution (e g , Tπton-X 100) or by enzymatic cleavage Cells employed in expression of PRO polypeptides can be disrupted by various physical or chemical means, such as freeze-thaw cycling, sonication, mechanical disruption, or cell lysing agents It may be desired to purify PRO polypeptides from recombinant cell proteins or polypeptides The following procedures are exemplary of suitable purification procedures by fractionation on an ion-exchange column, ethanol precipitation, reverse phase HPLC, chromatography on silica or on a cation-exchange resin such as DEAE, chromatotocusing, SDS-PAGE, ammonium sulfate precipitation, gel filtration using, tor example Sephadex G-75, protein A Sepharose columns to remove contaminants such as IgG. and metal chelating columns to bind epitope-tagged forms of the PRO polypeptide Various methods of protein purification may be employed and such methods are known in the art and described for example in Deutscher, Methods in Enzymology, 182 ( 1990), Scopes, Protein Purification Principles and Practice, Springer- Verlag, New York (1982) The purification step(s) selected will depend for example on the nature of the production process used and the particular PRO polypeptide produced E Antibodies Some drug candidates for use in the compositions and methods of the present m ention are antibodies and antibody fragments which mimic the biological activity of a PRO polypeptide 1 Polyclonal Antibodies Methods of preparing polyclonal antibodies are known to the skilled artisan Polyclonal antibodies can be raised in a mammal for example, by one or more injections ot an immunizing agent and, if desired an adjuvant Typically the immunizing agent and/or adjuvant will be injected in the mammal by multiple subcutaneous or lntrapeπtoneal injections The immunizing agent may include the PRO polypeptide or a fusion protein thereof It may be useful to conjugate the immunizing agent to a protein known to be lmmunogenic in the mammal being immunized Examples ot such lmmunogenic proteins include but are not limited to keyhole limpet hemocyanin, serum albumin, bovine thyroglobuhn, and soybean trypsin inhibitoi Examples ot adjuvants which may be employed include Freund s complete adjuvant and MPL-TDM adjuvant (monophosphoryl Lipid A, synthetic trehalose dicorynomycolate) The immunization protocol may be selected by one skilled in the art without undue experimentation 2 Monoclonal Antibodies The antibodies may, alternatively, be monoclonal antibodies Monoclonal antibodies may be prepared using hybπdoma methods, such as those described by Kohler and Milstein, Nature.256 495 ( 1975) In a hybπdoma method, a mouse, hamster, or other appropriate host animal, is typically immunized with an immunizing agent to elicit lymphocytes that produce or are capable of producing antibodies that will specifically bind to the immunizing agent Alternatively, the lymphocytes may be immunized in vitro The immunizing agent will typically include the PRO polypeptide or a fusion protein thereof Generally, either peripheral blood lymphocytes ("PBLs' ) are used if cells of human origin are desired, or spleen cells or lymph node cells are used if non-human mammalian sources are desired The lymphocytes are then fused with an immortalized cell line using a suitable fusing agent, such as polyethylene glycol to form a hybπdoma cell [Goding, Monoclonal Antibodies Principles and Practice. Academic Press. ( 1986) pp 59-103] Immortalized cell lines are usually transformed mammalian cells, particularly myeloma cells of rodent, boy ine and human origin Usually, rat or mouse myeloma cell lines are employed The hybπdoma cells may be cultured in a suitable culture medium that preferably contains one or more substances that inhibit the growth or survival of the unfused, immortalized cells For example, if the parental cells lack the enzyme hypoxanthme guanine phosphoπbosyl transferase (HGPRT or HPRT), the culture medium tor the hybπdomas typically will include hypoxanthme, aminopteπn, and thymidine ("HAT medium' ), which substances prevent the growth of HGPRT-deficient cells Preferred immortalized cell lines are those that fuse efficiently, support stable high level expression of antibody by the selected antibody-producing cells, and are sensitive to a medium such as HAT medium More preferred immortalized cell lines are murine myeloma lines which can be obtained, tor instance from the Salk Institute Cell Distribution Center. San Diego, California and the Ameiican Type Culture Collection. Manassas Virginia Human myeloma and mouse-human heteromyeloma cell lines also have been described for the production of human monoclonal antibodies [Kozbor J Immunol . 133 3001 ( 1984) Brodeur et al . Monoclonal Antibody Production Techniques and Applications. Marcel Dekker, Inc , New York, ( 1987) pp 51 -63] The culture medium in which the hybπdoma cells are cultured can then be assayed for the presence of monoclonal antibodies directed against the PRO polypeptide Preferably, the binding specificity of monoclonal antibodies produced by the hybπdoma cells is determined by immunoprecipitation or by an in vitro binding assay such as radioimmunoassay (RIA) or enzyme-linked immunoabsorbent assay (ELISA) Such techniques and assays are known in the art The binding affinity of the monoclonal antibody can, tor example be determined by the Scatchard analysis of Munson and Pollard. Anal Biochem , 107 220 ( 1980) After the desired hybπdoma cells are identified, the clones may be subcloned by limiting dilution procedures and grown by standard methods [Goding, supia] Suitable culture media tor this purpose include, for example, Dulbecco's Modified Eagle's Medium and RPMI-1640 medium Alternatively the hybπdoma cells may be grown in vivo as ascites in a mammal The monoclonal antibodies secreted by the subclones may be isolated or purified from the culture medium or ascites fluid by conventional immunoglobulm purification procedures such as, for example, protein A-Sepharose hydroxylapatite chromatography, gel electrophoresis, dialysis, or affinity chromatography The monoclonal antibodies may also be made by recombinant DNA methods, such as those described in U S Patent No 4,816,567 DNA encoding the monoclonal antibodies of the invention can be readily isolated and sequenced using conventional procedures (e.g , by using oligonucleotide probes that are capable of binding specifically to genes encoding the heavy and light chains ot murine antibodies) The hybπdoma cells of the invention serve as a preferred source of such DNA Once isolated, the DNA may be placed into expression y ectors which are then transfected into host cells such as simian COS cells, Chinese hamster ovary (CHO) cells, or myeloma cells that do not otherwise produce immunoglobulm protein, to obtain the synthesis of monoclonal antibodies in the recombinant host cells The DNA also may be modified, for example, by substituting the coding sequence for human heavy and light chain constant domains in place of the homologous murine sequences [U S Patent No 4,816,567, Morrison et al , supra] or by covalently joining to the immunoglobulm coding sequence all or part of the coding sequence for a non-immunoglobuhn polypeptide Such a non-immunoglobulin polypeptide can be substituted for the constant domains of an antibody of the invention, or can be substituted for the \ aπable domains of one antigen-combining site of an antibody of the invention to create a chimeric bivalent antibody The antibodies may be monovalent antibodies Methods for preparing monoy alent antibodies are well known in the art For example, one method involves recombinant expression of immunoglobulm light chain and modified heavy chain The heavy chain is truncated generally at any point in the Fc region so as to prevent heavy chain crosshnking Alternatively, the relevant cysteine residues are substituted with another amino acid residue or are deleted so as to prevent crosshnking In vitro methods are also suitable for preparing monovalent antibodies Digestion of antibodies to produce fragments thereof, particularly, Fab fragments, can be accomplished using routine techniques known in the art 3 Human and Humanized Antibodies The antibodies of the myention may further comprise humanized antibodies or human antibodies Humanized forms of non-human (e g murine) antibodies are chimeric immunoglobulins, immunoglobulm chains or fragments thereof (such as Fy . Fab Fab , F(ab ), or other antigen-binding subsequences of antibodies) which contain minimal sequence derived from non-human immunoglobulm Humanized antibodies include human immunoglobulins (recipient antibody) in which residues from a complementary determining region (CDR) of the recipient are replaced by residues from a CDR of a non human species (donor antibody) such as mouse, rat or rabbit having the desired specificity, affinity and capacity In some instances, Fv framework residues of the human immunoglobulm are replaced by corresponding non-human residues Humanized antibodies may also comprise residues which are found neither in the recipient antibody nor in the imported CDR or framework sequences In general, the humanized antibody will comprise substantially all of at least one, and typically two aπable domains, in which all or substantially all ot the CDR regions correspond to those of a non-human immunoglobulm and all or substantially all of the FR regions are those of a human immunoglobulm consensus sequence The humanized antibody optimally also will comprise at least a portion of an immunoglobulm constant region (Fc), typically that of a human immunoglobulm [Jones et al , Nature. 321 522 525 ( 1986) Riechmann et al Nature. 332 323-329 (1988), and Presta, Curr Op Struct Biol . 2 593 596 ( 1992)] Methods for humanizing non-human antibodies are well known in the art Generally, a humanized antibody has one or more amino acid residues introduced into it from a source which is non-human These non- human amino acid residues are often referred to as "import residues, which are typically taken from an "import" variable domain Humanization can be essentially performed following the method of Winter and co-workers [Jones et al , Nature, 321 522-525 (1986), Riechmann et al , Nature, 332 323-327 (1988), Verhoeyen et al , Science, 239 1534- 1536 ( 1988)] , by substituting rodent CDRs or CDR sequences for the corresponding sequences of a human antibody Accordingly, such "humanized" antibodies are chimeric antibodies (U S Patent No 4,816,567), wherein substantially less than an intact human variable domain has been substituted by the corresponding sequence from a non-human species In practice, humanized antibodies are typically human antibodies in which some CDR residues and possibly some FR residues are substituted by residues from analogous sites in rodent antibodies Human antibodies can also be produced using various techniques known in the art, including phage display libraries [Hoogenboom and Winter, J Mol Biol . 227 381 (1991 ), Marks et al , J Mol Biol , 222 581 (1991 )] The techniques of Cole et al , and Boerner et al , are also available for the preparation of human monoclonal antibodies (Cole etal , Monoclonal Antibodies and Cancer Therapy, Alan R Liss, p 77 (1985) and Boerner et al , J Immunol . 147(1 ) 86-95 (1991 )] Similarly, human antibodies can be made by the introducing of human immunoglobulm loci into transgenic animals, e g , mice in which the endogenous immunoglobulm genes have been partially or completely inactivated Upon challenge, human antibody production is obseryed, which closely resembles that seen in humans in all respects, including gene rearrangement, assembly, and antibody repertoire This approach is described, for example, in U S Patent Nos 5,545,807, 5,545,806, 5 569.825, 5,625,126, 5,633,425, 5,661 ,016 and in the following scientific publications Marks et al Bio/Technology, 10 779-783 ( 1992), Lonber gfα/ , Nature, 368 856-859 ( 1994). Morrison, Nature, 368 812-13 ( 1994), Fιshwιld e/α/ Nature Biotechnology, 14 845-51 (1996) Neuberger, Nature Biotechnology 14 826 (1996) Lonberg and Huszar Intern Rev Immunol J3 65 93 ( 1995) 4 Bispecific Antibodies Bispecific antibodies are monoclonal, preferably human or humanized, antibodies that have binding specificities for at least two different antigens In the present case, one of the binding specificities is tor the PRO polypeptide, the other one is for any other antigen, and preferably for a cell-surface protein or receptor or receptor subunit Methods for making bispecific antibodies are known in the art Traditionally, the recombinant production of bispecific antibodies is based on the co expression of two immunoglobulm heavy-chain/hght-chain pairs, where the two heavy chains have different specificities [Milstein and Cuello Nature. 305 537-539 ( 1983)1 Because of the random assortment of immunoglobulm heavy and light chains these hybπdomas (quadromas) produce a potential mixture of ten different antibody molecules of which only one has the correct bispecific structure The purification of the correct molecule is usually accomplished by affinity chromatography steps Similar procedures are disclosed in WO 93/08829, published 13 May 1993, and in Traunecker et al , EMBO J . JO 3655-3659 (1991 ) Antibody variable domains with the desired binding specificities (antibody-antigen combining sites) can be fused to immunoglobulm constant domain sequences The fusion preferably is with an immunoglobulm heavy- chain constant domain, comprising at least part of the hinge, CH2, and CH3 regions It is preferred to have the first heavy-chain constant region (CHI ) containing the site necessary for light-chain binding present in at least one of the fusions DNAs encoding the immunoglobulm heavy-chain fusions and, if desired, the immunoglobulm light chain, are inserted into separate expression vectors, and are co-transfected into a suitable host organism For further details of generating bispecific antibodies see, for example, Suresh etal , Methods in Enzymology. 121 210 (1986) According to another approach described in WO 96/2701 1 , the interface between a pair of antibody molecules can be engineered to maximize the percentage of heterodimers which are recovered from recombinant cell culture The preferred interface comprises at least a part of the CH3 region of an antibody constant domain In this method, one or more small amino acid side chains from the interface of the first antibody molecule are replaced with larger side chains (e g , tyrosine or tryptophan) Compensatory "cavities" of identical or similar size to the large side chaιn(s) are created on the interface of the second antibody molecule by replacing large amino acid side chains with smaller ones (e g , alanine or threonine) This provides a mechanism for increasing the yield of the heterodimer over other unwanted end-products such as homodimers Bispecific antibodies can be prepared as full length antibodies or antibody fragments (e g , F(ab'), bispecific antibodies) Techniques for generating bispecific antibodies from antibody fragments have been described in the literature For example, bispecific antibodies can be prepared using chemical linkage Brennan et al , Science.229 81 (1985) describe a procedure wherein intact antibodies are proteolytically cleaved to generate F(ab')-, fragments These fragments are reduced in the presence of the dithiol complexing agent sodium arsenite to stabilize vicinal dithiols and prevent intermolecular disulfide formation The Fab fragments generated are then converted to thionitrobenzoate (TNB) derivatives One of the Fab'-TNB derivatives is then reconverted to the Fab'-thiol by reduction with mercaptoethylamine and is mixed with an equimolar amount of the other Fab'-TNB derivative to form the bispecific antibody The bispecific antibodies produced can be used as agents for the selective immobilization of enzymes Fab' fragments may be directly recoyered from E coli and chemically coupled to form bispecific antibodies Shalaby et al , J Exp Med , 175 217-225 ( 1992) describe the production of a fully humanized bispecific antibody F(ab'), molecule Each Fab' fragment was separately secreted from E coli and subjected to directed chemical coupling in to form the bispecific antibody The bispecific antibody thus formed was able to bind to cells overexpressing the ErbB2 receptor and normal human T cells, as well as trigger the lytic activity of human cytotoxic lymphocytes against human breast tumor targets Various techniques for making and isolating bispecific antibody fragments directly from recombinant cell culture have also been described For example, bispecific antibodies haye been produced using leucine zippers Kostelny et al . J Immunol . 148(5) 1 47-1553 (1992) The leucine zipper peptides from the Fos and Jun proteins were linked to the Fab portions of two different antibodies by gene fusion The antibody homodimers were reduced at the hinge region to form monomers and then re-oxidized to form the antibody heterodimers This method can also be utilized for the production of antibody homodimers The diabody technology described by Holhnger et al , Proc Natl Acad Sci USA, 90 6444-6448 ( 1993) has provided an alternam e mechanism for making bispecific antibody fragments The fragments comprise a heavy-chain variable domain (V H ) connected to a light-chain variable domain (V L ) by a linker which is too short to allow pairing between the two domains on the same chain Accordingly, the V H and V L domains of one fragment are forced to pair with the complementary V L and V H domains of another fragment, thereby forming two antigen-binding sites Another strategy for making bispecific antibody fragments by the use of single-chain Fv (sFv) dimers has also been reported See, Gruber et al J Immunol . 152 5368 (1994) Antibodies with more than two valencies are contemplated For example, tπspecific antibodies can be prepared Tutt et al , J Immunol , 147 60 ( 1991 ) Exemplary bispecific antibodies may bind to two different epitopes on a given PRO polypeptide herein Alternatively, an anti-PRO polypeptide arm may be combined with an arm which binds to a triggering molecule on a leukocyte such as aT-cell receptor molecule (e g , CD2, CD3, CD28 or B7), orFc receptors for IgG (FcγR), such as FcγRI (CD64), FcγRII (CD32) and FcγRIII (CD 16) so as to focus cellular defense mechanisms to the cell expressing the particular PRO polypeptide Bispecific antibodies may also be used to localize cytotoxic agents to cells which express a particular PRO polypeptide These antibodies possess a PRO-binding arm and an arm which binds a cytotoxic agent or a radionuclide chelator, such as EOTUBE, DPTA, DOTA, or TETA Another bispecific antibody of interest binds the PRO polypeptide and further binds tissue factor (TF) 5 Heterocon jugate Antibodies Heteroconjugate antibodies are also within the scope of the present invention Heteroconjugate antibodies are composed of two covalently joined antibodies Such antibodies have, for example, been proposed to target immune system cells to unwanted cells [U S Patent No 4,676.980], and for treatment of HIV infection [WO 91/00360. WO 92/200373, EP 03089] It is contemplated that the antibodies may be prepared in vitro using known methods in synthetic protein chemistry, including those involving crosshnking agents For example, lmmunotoxins may be constructed using a disulfide exchange reaction or by forming a thioether bond Examples ot suitable reagents for this purpose include lminothiolate and methyl-4-mercaptobutyπmιdate and those disclosed, for example, in U S Patent No 4,676.980 6 Effector Function Engineering It may be desirable to modify the antibody ot the myention with respect to effector function so as to enhance, e g , the effectiveness of the antibody in treating cancer For example, cysteine resιdue(s ) may be introduced into the Fc region, thereby allowing interchain disulfide bond formation in this region The homodimeric antibody thus generated may have improved internalization capability and/or increased complement-mediated cell killing and antibody-dependent cellular cytotoxicity (ADCC) See, Caron et al , J Exp Med , 176 1 191 -1 195 (1992) and Shopes. J Immunol , 148 2918-2922 (1992) Homodimeric antibodies with enhanced anti-tumor activity may also be prepared using heterobitunctional cross-linkers as described in Wolff etal , Cancer Research. 53 2560-2565 ( 1993) Alternatively, an antibody can be engineered that has dual Fc regions and may thereby have enhanced complement lysis and ADCC capabilities See, Stevenson et al , Anti-Cancer Drug Design 3 219-230 (1989) 7 Immunoconiugates The invention also pertains to immunoconjugates comprising an antibody conjugated to a cytotoxic agent such as a chemotherapeutic agent, toxin (e g , an enzymatically active toxin of bacterial, fungal, plant, or animal oπgin, or fragments thereof), or a radioactive isotope (i e , a radioconjugate) Chemotherapeutic agents useful in the generation of such immunoconjugates have been described above Enzymatically active toxins and fragments thereof that can be used include diphtheria A chain, nonbinding active fragments of diphtheria toxin, exotoxin A chain (from Pseudomonas aeruginosa), πcin A chain, abπn A chain, modeccin A chain, alpha-sarcin, Aleuntes fordu proteins, dianthin proteins, Ph\ tolaca amertcana proteins (PAPI, PAPII, and PAP-S), momordica charantia inhibitor, curcin, crotin, sapaonaπa officinalis inhibitor, gelonin, mitogelhn, restπctocin, phenomycin, enomycin, and the tπcothecenes A variety of radionuchdes are available for the production of radioconjugated antibodies Examples include 212 Bι, 'I, "'In, 9 "Y, and l86 Re Conjugates of the antibody and cytotoxic agent are made using a variety of bifunctional protein-coupling agents such as N-succιnιmιdyl-3-(2-pyπdyldιthιol) propionate (SPDP), lminothiolane (IT), bifunctional derivatives of imidoesters (such as dimethyl adipimidate HCL), active esters (such as disuccimmidyl suberate), aldehydes (such as glutareldehyde), bis-azido compounds (such as bis (p-azidobenzoyl) hexanediamine), bis-diazonium derivatives (such as bιs-(p-dιazomumbenzoyl)-ethylenedιamιne), diisocyanates (such as tolyene 2,6-dnsocyanate), and bis- active fluorine compounds (such as 1 ,5-dιfluoro-2,4-dιnιtrobenzene) For example, a πcin lmmunotoxin can be prepared as described in Vitetta et al . Science, 238 1098(1987) Carbon- 14-labeled l -ιsothιocyanatobenzyl-3- methyldiethylene tπaminepentaacetic acid (MX-DTPA) is an exemplary chelating agent for conjugation of radionucleotide to the antibody See, W094/1 1026 In another embodiment, the antibody may be conjugated to a ' receptor" (such as streptay idin) for utilization in tumor pretargeting wherein the antibody-receptor conjugate is administered to the patient, followed by removal of unbound conjugate from the circulation using a clearing agent and then administration of a ' ligand' (e g avidin) that is conjugated to a cytotoxic agent (e g a radionucleotide) 8 Immunohposomes The antibodies disclosed herein may also be formulated as immunohposomes Liposomes containing the antibody are pi epared by methods known in the art, such as described in Epstein et al Proc Natl Acad Sci USA. 82 3688 ( 1985), Hwang et al Proc Natl Acad Sci USA, 77 4030 ( 1980), and U S Pat Nos 4 485,045 and 4,544,545 Liposomes w ith enhanced circulation time are disclosed in U S Patent No 5,013,556 Particularly useful liposomes can be generated by the reverse phase evaporation method with a lipid composition comprising phosphatidylcholine. cholesterol, and PEG-deπvatized phosphatidylethanolamine (PEG- PE) Liposomes are extruded through filters of defined pore size to yield liposomes with the desired diameter Fab' fragments of the antibody of the present invention can be conjugated to the liposomes as described in Martin et al , J Biol Chem . 257 286-288 ( 1982) via a disulfide-interchange reaction A chemotherapeutic agent (such as Doxorubicin) is optionally contained within the liposome See, Gabizon et al , J National Cancer Inst . 81 (19) 1484 (1989) F Identification of Proteins Capable of Inhibiting Neoplastic Cell Growth or Proliferation The proteins disclosed in the present application have been assayed in a panel of 60 tumor cell lines currently used in the investigational, disease-oriented, in vitio drug-discovery screen of the National Cancer Institute (NCI) The purpose of this screen is to identify molecules that have cytotoxic and/or cytostatic activity against different types of tumors NCI screens more than 10,000 new molecules per year (Monks et al , J Natl Cancer Inst_, 83 757-766 (1991 ), Boyd, Cancer Pπnc Pract Oncol Update, 3( 10) 1 -12 ([1989]) The tumor cell lines employed in this study have been described in Monks et al , supta The cell lines the growth of which has been significantly inhibited by the proteins of the present application are specified in the Examples The results have shown that the proteins tested show cytostatic and, in some instances and concentrations, cytotoxic activities in a variety ot cancer cell lines, and therefore are useful candidates tor tumor therapy Other cell-based assays and animal models for tumors (e g , cancers) can also be used to verify the findings of the NCI cancer screen, and to further understand the relationship between the protein identified herein and the development and pathogenesis of neoplastic cell growth For example, primary cultures derived from tumors in transgenic animals (as described below) can be used in the cell-based assays herein, although stable cell lines are preferred Techniques to derive continuous cell lines from transgenic animals are well known in the art (see, e g , Small et al , Mol Cell Biol . 5 642-648 [1985]) G Animal Models A variety ot well known animal models can be used to further understand the role of the molecules identified herein in the development and pathogenesis of tumors, and to test the efficacy of candidate therapeutic agents, including antibodies, and other agonists of the native polypeptides, including small molecule agonists The in vivo nature of such models makes them particularly predictive of responses in human patients Animal models of tumors and cancers (e g . breast cancer colon cancer, prostate cancer, lung cancer, etc ) include both non- recombinant and recombinant (transgenic) animals Non-recombinant animal models include, tor example rodent e g , muπne models Such models can be generated by introducing tumor cells into sy ngeneic mice using standard techniques, e g subcutaneous injection, tail vein injection, spleen implantation lntrapeπtoneal implantation implantation under the renal capsule, or orthopin implantation, e g , colon cancer cells implanted in colonic tissue (See, e g , PCT publication No WO 97/33551 , published September 18, 1997) Probably the most often used animal species in oncological studies are immunodeficient mice and, in particular, nude mice The observation that the nude mouse with hypo/aplasia could successfully act as a host for human tumor xenogratts has lead to its widespread use for this purpose The autosomal recessive nu gene has been introduced into a very large number of distinct congenic strains of nude mouse including, tor example, ASW, A/He, AKR, BALB/c, B I O LP, C17, C3H, C57BL, C57, CBA, DBA, DDD, I/st, NC NFR. NFS NFS/N, NZB, NZC, NZW, P, RIII and SJL In addition, a wide variety of other animals with inherited immunological detects other than the nude mouse have been bred and used as recipients of tumor xenogratts For further details see, e g , The Nude Mouse in Oncology Research, E Boven and B Winograd, eds , CRC Press, Inc 1991 The cells introduced into such animals can be derived from known tumor/cancer cell lines, such as, any of the above listed tumor cell lines, and, for example, the B 104-1 - 1 cell line (stable NIH-3T3 cell line transfected with the neu protooncogene), ras-transfected NIH-3T3 cells, Caco-2 (ATCC HTB-37), a moderately well- differentiated grade II human colon adenocarcinoma cell line, HT-29 (ATCC HTB-38), or from tumors and cancers Samples of tumor or cancer cells can be obtained from patients undergoing surgery, using standard conditions, involving freezing and storing in liquid nitrogen (Karmali et al , Br J Cancer, 48 689-696 [1983]) Tumor cells can be introduced into animals, such as nude mice, by a variety of procedures The subcutaneous (s c ) space in mice is very suitable for tumor implantation Tumors can be transplanted s c as solid blocks, as needle biopsies by use of a trochar, or as cell suspensions For solid block or trochar implantation, tumor tissue fragments of suitable size are introduced into the s c space Cell suspensions are freshly prepared from primary tumors or stable tumor cell lines, and injected subcutaneously Tumor cells can also be injected as subdermal implants In this location, the inoculum is deposited between the loy er part of the dermal connective tissue and the s c tissue Boven and Winograd (1991 ), supta Animal models of breast cancer can be generated, for example, by implanting rat neuroblastoma cells (from which the neu oncogen was initially isolated), or new- transformed NIH-3T3 cells into nude mice, essentially as described by Drebin et al , Proc Natl Acad Sci USA. 83 9129-9133 (1986) Similarly, animal models of colon cancer can be generated by passaging colon cancer cells in animals, e g . nude mice, leading to the appearance ot tumors in these animals An orthotopic transplant model of human colon cancer in nude mice has been described, for example, by Wang et al , Cancer Research, 54 4726-4728 ( 1994) and Too et al , Cancer Research. 55 681 -684 ( 1995) This model is based on the so-called "METAMOUSE™" sold by AntiCancer, Inc , (San Diego, California) Tumors that arise in animals can be removed and cultured in vttto Cells from the in \ iti o cultures can then be passaged to animals Such tumors can serve as targets for further testing or drug screening Alternatively, the tumors resulting from the passage can be isolated and RNA from pre-passage cells and cells isolated after one or more rounds ot passage analvzed tor differential expression of genes ot interest Such passaging techniques can be performed with any knoy n tumor or cancer cell lines For example, Meth A, CMS4, CMS5 CMS21 and WEHI- 164 are chemically induced fibrosarcomas of BALB/c female mice (DeLeo et al , J Exp Med 146 720 [ 1977]) y hich provide a highly controllable model system for studying the anti-tumor activities of various agents (Palladino et al J Immunol . 138 4023-4032 [ 1987]) Briefly, tumor cells are propagated in \ itro in cell culture Prior to injection into the animals, the cell lines are washed and suspended in buffer, at a cell density of about 10x10* to 10x10 cells/ml The animals are then infected subcutaneously with 10 to 100 μ\ of the cell suspension allowing one to three weeks for a tumor to appear In addition, the Lewis lung (3LL) carcinoma of mice which is one of the most thoroughly studied experimental tumors can be used as an myestigational tumor model Efficacv in this tumor model has been correlated with beneficial effects in the treatment of human patients diagnosed with small cell carcinoma of the lung (SCCL) This tumor can be introduced in normal mice upon injection of tumor fragments from an affected mouse or of cells maintained in culture (Zupi et al , Br J Cancer, 41 , suppl 4 309 [ 19801) and evidence indicates that tumors can be started from injection of even a single cell and that a very high proportion of infected tumor cells survive For further information about this tumor model sec. Zacharski. Haemostasis 16 300-320 (1986) One way of evaluating the efficacy of a test compound in an animal model on an implanted tumor is to measure the size of the tumor before and after treatment Traditionally, the size of implanted tumors has been measured with a slide cahper in two or three dimensions The measure limited to two dimensions does not accurately reflect the size of the tumor, therefore, it is usually converted into the corresponding volume by using a mathematical formula However, the measurement of tumor size is very inaccurate The therapeutic effects of a drug candidate can be better described as treatment-induced growth delay and specific growth delay Another important variable in the description of tumor growth is the tumor volume doubling time Computer programs for the calculation and description of tumor growth are also available, such as the program reported by Rygaard and Spang-Thomsen, Proc 6th Int Workshop on Immune-Deficient Animals Wu and Sheng eds , Basel, 1989, 301 It is noted, however, that necrosis and inflammatory responses following treatment may actually result in an increase in tumor size, at least initially Therefore, these changes need to be careful I v monitored, by a combination of a morphometπc method and flow cytometπc analysis Recombinant (transgenic) animal models can be engineered by introducing the coding portion of the genes identified herein into the genome ot animals of interest, using standard techniques for producing transgenic animals Animals that can serve as a target for transgenic manipulation include, without limitation, mice, rats, rabbits, guinea pigs, sheep, goats, pigs, and non-human primates, e g , baboons, chimpanzees and monkeys Techniques known in the art to introduce a transgene into such animals include pronucleic mιcroιn)ectιon (Hoppe and Wanger, U S Patent No 4,873, 191 ), retrovirus-mediated gene transfer into germ lines (e g Van der Putten et al , Proc Natl Acad Sci USA 82 6148-615 [ 1985]), gene targeting in embryonic stem cells (Thompson etal , CeH, 56 313-321 [1989]), electroporation of embryos (Lo, Mol Cell Biol , 3 1803-1814 [ 1983]), sperm-mediated gene transfer (Lavttrano et al , Cell, 57 717-73 119891) For review, see, for example, U S Patent No 4,736,866 For the purpose of the present invention, transgenic animals include those that carry the transgene only in part of their cells ("mosaic animals") The transgene can be integrated either as a single transgene, or in concatamers e g , head-to head or head-to-tail tandems Selective introduction ot a transgene into a particular cell type is also possible by following tor example, the technique of Lasko ef α/ Proc Natl Acad Sci USA 89 6232- 636 (1992) The expression of the transgene in transgenic animals can be monitored by standard techniques For example, Southern blot analysis or PCR amplification can be used to verify the integration of the transgene The level of mRNA expression can then be analyzed using techniques such as in situ hybridization, Northern blot analysis, PCR, or immunocytochemistry The animals are further examined for signs of tumor or cancer development The efficacy of antibodies specifically binding the polypeptides identified herein and other drug candidates, can be tested also in the treatment of spontaneous animal tumors A suitable target tor such studies is the feline oral squamous cell carcinoma (SCC) Feline oral SCC is a highly lnvasne malignant tumor that is the most common oral malignancy of cats, accounting for over 60% of the oral tumors reported in this species It rarely metastasizes to distant sites, although this low incidence of metastasis may merely be a reflection of the short survival times for cats with this tumor These tumors are usually not amenable to surgery, primarily because of the anatomy of the feline oral cavity At present, there is no effective treatment for this tumor Prior to entry into the study, each cat undergoes complete clinical examination, biopsy, and is scanned by computed tomogiaphy (CT) Cats diagnosed with subhngual oral squamous cell tumors are excluded from the study The tongue can become paralyzed as a result of such tumor, and even if the treatment kills the tumor, the animals may not be able to feed themselves Each cat is treated repeatedly, over a longer period of time Photographs of the tumors will be taken daily during the treatment period, and at each subsequent recheck After treatment, each cat undergoes another CT scan CT scans and thoracic radiograms are evaluated every 8 weeks thereafter The data are evaluated for differences in survival, response and toxicity as compared to control groups Positive response may require evidence of tumor regression, preferably with improvement of quality of life and or increased lite span In addition, other spontaneous animal tumors, such as fibrosarcoma, adenocarcinoma, lymphoma, chrondroma, leiomyosarcoma of dogs, cats, and baboons can also be tested Of these mammary adenocarcinoma in dogs and cats is a preferred model as its appearance and behavior are very similar to those in humans However the use of this model is limited by the rare occurrence of this type of tumor in animals H Screening Assays for Drug Candidates Screening assays for drug candidates are designed to identify compounds that competitively bind or complex with the receptor(s) of the polypeptides identified herein, or otherwise signal through such receptor(s) Such screening assays will include assays amenable to high-throughput screening of chemical libraries, making them particularly suitable for identifying small molecule drug candidates Small molecules contemplated include synthetic organic or inorganic compounds, including peptides, preferably soluble peptides, (poly)peptιde- lmmunoglobuhn fusions, and, in particular, antibodies including without limitation, poly- and monoclonal antibodies and antibody fragments, single-chain antibodies, anti-idiotypic antibodies, and chimeric or humanized versions of such antibodies or fragments, as well as human antibodies and antibody fragments The assays can be performed in a variety of formats, including protein-protein binding assays, biochemical screening assays, immunoassays and cell based assays which are y ell characterized in the art In binding assays, the interaction is binding and the complex formed can be isolated or detected in the reaction mixture In a particular embodiment, a receptor ot a polypeptide encoded by the gene identified herein or the drug candidate is immobilized on a solid phase, e g , on a microtiter plate, by covalent or non-covalent attachments Non-covalent attachment generally is accomplished by coating the solid surface with a solution ot the polypeptide and drying Alternatively, an immobilized antibody, e g , a monoclonal antibody, specific for the polypeptide to be immobilized can be used to anchor it to a solid surface The assay is performed by adding the non-immobilized component, which may be labeled by a detectable label to the immobilized component, e g , the coated surface containing the anchored component When the reaction is complete, the non-reacted components are removed, e g , by washing, and complexes anchored on the solid surface are detected When the originally non- lmmobihzed component carries a detectable label, the detection of label immobilized on the surface indicates that complexing occurred Where the originally non-immobilized component does not carry a label, complexing can be detected, foi example, by using a labeled antibody specifically binding the immobilized complex If the candidate compound interacts with but does not bind to a particular receptor, its interaction with that polypeptide can be assayed by methods well known for detecting protein-prote interactions Such assays include traditional approaches, such as, cross-linking, co-immunoprecipitation, and co-purification through gradients or chromatographic columns In addition, protein-protein interactions can be monitored by using a yeast-based genetic system described by Fields and co-workers [Fields and Song, Nature (London), 340 245-246 (1989), Chien et al , Proc Natl Acad Sci USA. 88 9578-9582 (1991 )] as disclosed by Chevray and Nathans [Proc Natl Acad Sci USA. 89 5789-5793 (1991 )] Many transcriptional activators, such as yeast GAL4, consist of two physically discrete modular domains, one acting as the DNA-binding domain, while the other one functioning as the transcription activation domain The yeast expression system described in the foregoing publications (generally referred to as the "two-hybrid system") takes advantage of this property, and employs two hybrid proteins, one in which the target protein is fused to the DNA-binding domain of GAL4, and another, in which candidate activating proteins are fused to the activation domain The expression of a GALl -/αcZ reporter gene under control of a GAL4-actιvated promoter depends on reconstitution of GAL4 activity via protein-protein interaction Colonies containing interacting polypeptides are detected with a chromogenic substrate for β-galactosidase A complete kit (MATCHMAKER 1 " 1 ) for identifying protein-protein interactions between two specific proteins using the two- hybrid technique is commercially available from Clontech This system can also be extended to map protein domains involved in specific protein interactions as well as to pinpoint amino acid residues that are crucial for these interactions I Pharmaceutical Compositions The polypeptides of the present invention, agonist antibodies specifically binding proteins identified herein, as well as other molecules identified by the screening assays disclosed herein, can be administered for the treatment of tumors, including cancers, in the form of pharmaceutical compositions Where antibody fragments are used, the smallest inhibitory fragment which specifically binds to the binding domain of the target protein is preferred For example, based upon the variable region sequences of an antibody, peptide molecules can be designed which retain the ability to bind the target protein sequence Such peptides can be synthesized chemically and or produced by recombinant DNA technology (see e ^ Marasco et al . Proc Natl Acad Sci USA 90 7889-7893 [ 1993]) The formulation herein may also contain more than one acme compound as necessary for the particular indication being treated, preferably those with complementary activities that do not adversely affect each other Alternatively, or in addition, the composition may comprise an agent that enhances its function, such as. for example, a cytotoxic agent cytokine, chemotherapeutic agent, or growth-inhibitory agent Such molecules are suitably present in combination in amounts that are effective for the purpose intended Therapeutic formulations of the polypeptides identified herein, or agonists thereof are prepared for storage by mixing the active ingredient having the desired degree of purity with optional pharmaceutically acceptable earners, excipients or stabilizers (Remington's Pharmaceutical Sciences 16th edition Osol, A ed [ 1980]), in the form of lyophilized formulations or aqueous solutions Acceptable carriers, excipients or stabilizers are nontoxic to recipients at the dosages and concentrations employed, and include buffers such as phosphate, citrate, and other organic acids, antioxidants including ascorbic acid and methionine, preservatives (such as octadecyldimethylbenzyl ammonium chloride, hexamethonium chloride, benzalkonium chloride, benzethonium chloride, phenol, butyl or benzyl alcohol, alkyl parabens such as methyl or propyl paraben, catechol, resorcinol, cyclohexanol, 3-pentanol, and m-cresol), low molecular weight (less than about 10 residues) polypeptides, proteins, such as serum albumin, gelatin, or immunoglobulins, hydrophilic polymers such as polyvinylpyrrohdone, amino acids such as glycine, glutamine, asparagine, histidine, argimne, or lysine, monosacchaπdes, disacchaπdes, and other carbohydrates including glucose, mannose, or dextrins, chelatmg agents such as EDTA, sugars such as sucrose, mannitol, trehalose or sorbitol, salt-forming counter-ions such as sodium, metal complexes (e g , Zn-protein complexes), and or non- lonic surfactants such as TWEEN™, PLURONICS™ or polyethylene glycol (PEG) The formulation herein may also contain more than one active compound as necessary for the particular indication being treated, preferably those with complementary activities that do not adversely affect each other Alternatively, or in addition, the composition may comprise a cytotoxic agent, cytokine or growth inhibitory agent Such molecules are suitably present in combination in amounts that are effective for the purpose intended The active ingredients may also be entrapped in microcapsules prepared, for example, by coacervation techniques or by interfacial polymerization, for example, hydroxymethylcellulose or gelatin-microcapsules and poly-(methylmethacylate) microcapsules, respectively, in colloidal drug delivery systems (for example, liposomes, albumin microspheres, microemulsions, nano-particles and nanocapsules) or in macroemulsions Such techniques are disclosed in Remington's Pharmaceutical Sciences. 16th edition, Osol, A ed (1980) The formulations to be used for in vivo administration must be sterile This is readily accomplished by filtration through sterile filtration membranes, prior to or following lyophihzation and reconstitution Therapeutic compositions herein generally are placed into a container having a sterile access port, for example, an intravenous solution bag or vial having a stopper pierceable by a hypodermic injection needle Sustained-release preparations may be prepared Suitable examples of sustained-release preparations include semipermeable matrices of solid hydrophobic polymers containing the antibody, which matrices are in the form of shaped articles, e g , films, or microcapsules Examples of sustained-release matrices include polyesters, hydrogels (for example. poly(2-hydroxyethyl-methacrylate). or poly(vιnylalcohol)), polylactides (U S Pat No 3,773,919), copolymers of L-glutamic acid and γ ethyl-L-glutamate. non-degradable ethylene-vinyl acetate degradable lactic acid-glycohc acid copolymers such as the LUPRON DEPOT™ (injectable microspheres composed of lactic acid-glycohc acid copolymer and leuprohde acetate), and poly-D-(- ) -3-hydroxybutyπc acid While polymers such as ethylene-vinyl acetate and lactic acid-glycohc acid enable release of molecules for over 100 days, certain hydrogels release proteins for shorter time periods When encapsulated antibodies remain in the body tor a long time, they may denature or aggregate as a result of exposure to moisture at 37 °C, resulting in a loss of biological activity and possible changes in immunogenicity Rational strategies can be devised for stabilization depending on the mechanism involved For example, if the aggregation mechanism is discovered to be intermolecular S-S bond formation through thio-disultide interchange, stabilization may be achieved by modifying sulfhydryl residues, lyophihzing from acidic solutions, controlling moisture content, using appropriate additives, and developing specific polymer matrix compositions J Methods of Treatment It is contemplated that the polypeptides of the present invention and their agonists, including antibodies, peptides, and small molecule agonists, may be used to treat various tumors, e g , cancers Exemplary conditions or disorders to be treated include benign or malignant tumors (e g renal, liver, kidney , bladder, breast, gastric, ovarian, colorectal, prostate, pancreatic, lung, vulval, thyroid, hepatic carcinomas, sarcomas, ghoblastomas, and various head and neck tumors), leukemias and lymphoid malignancies, other disorders such as neuronal, glial, astrocytal, hypothalamic and other glandular, macrophagal, epithelial, stromal and blastocoe c disorders, and inflammatory, angiogenic and immunologic disorders The anti-tumor agents of the present invention (including the polypeptides disclosed herein and agonists which mimic their activity, e g , antibodies, peptides and small organic molecules), are administered to a mammal, preferably a human, in accord with known methods, such as intravenous administration as a bolus or by continuous infusion over a period of time, or by intramuscular, intrapeπtoneal, lntracerobrospmal, intraocular, lntraarteπal, intralesional, subcutaneous, lntraarticular, mtrasynovial, intrathecal, oral, topical, or inhalation routes Other therapeutic regimens may be combined with the administration of the anti-cancer agents of the instant invention For example, the patient to be treated with such anti-cancer agents may also receive radiation therapy. Alternatively, or in addition, a chemotherapeutic agent may be administered to the patient Preparation and dosing schedules for such chemotherapeutic agents may be used according to manufacturers' instructions or as determined empirically by the skilled practitioner Preparation and dosing schedules for such chemotherapy are also described in Chemotherapy Service, ed , M C Perry, Williams & Wilkins, Baltimore, MD (1992) The chemotherapeutic agent may precede, or follow administration of the anti-tumor agent of the present invention, or may be given simultaneously therewith The anti-cancer agents of the present invention may be combined with an anti-oestrogen compound such as tamoxifen or an anti-progesterone such as onapπstone (see, EP 616812) in dosages known for such molecules It may be desirable to also administer antibodies against tumor associated antigens, such as antibodies which bind to the ErbB2, EGFR, ErbB3, ErbB4, or vascular endothelial factor (VEGF) Alternatively, or in addition two or more antibodies binding the same or two or more different cancer-associated antigens may be co administered to the patient Sometimes, it may be beneficial to also administer one or more cytokines to the patient In a preferred embodiment, the anti-cancer agents herein are co-administered with a growth inhibitory agent For example the growth inhibitory agent may be administered first, followed by the administration of an anti-cancer agent of the present invention However, simultaneous administration or administration of the anti-cancer agent of the present invention first is also contemplated Suitable dosages tor the growth inhibitory agent are those presently used and may be lowered due to the combined action (synergy) of the growth inhibitory agent and the antibody herein For the prevention or treatment of disease, the appropriate dosage of an anti-tumor agent herein will depend on the type of disease to be treated, as defined above the severity and course ot the disease, whether the agent is administered for preventive or therapeutic purposes, previous therapy, the patient s clinical history and response to the agent and the discretion of the attending physician The agent is suitably administered to the patient at one time or over a series of treatments Animal experiments proy ide reliable guidance for the determination of effective doses for human therapy Interspecies scaling of effective doses can be performed following the principles laid down by Mordenti, J and Chappell, W "The use of interspecies scaling in toxicokinetics' in Toxicokinetics and New Drug Development, Yacobi et al , eds , Pergamon Press, New York 1989, pp 42-96 For example, depending on the type and severity of the disease, about 1 μg/kg to 15 mg/kg (e g , 0 1-20 mg/kg) of an antitumor agent is an initial candidate dosage for administration to the patient, whether, for example, by one or more separate administrations, or by continuous infusion A typical daily dosage might range from about 1 μg/kg to 100 mg/kg or more, depending on the factors mentioned above For repeated administrations over several days or longer, depending on the condition, the treatment is sustained until a desired suppression of disease symptoms occurs However, other dosage regimens may be useful The progress of this therapy is easily monitored by conventional techniques and assays Guidance as to particular dosages and methods of delivery is provided in the literature, see, for example, U S Pat Nos 4,657,760, 5,206,344, or 5,225,212 It is anticipated that different formulations will be effective for different treatment compounds and different disorders, that administration targeting one organ or tissue, for example, may necessitate delivery in a manner different from that to another organ or tissue K Articles of Manufacture In another embodiment of the invention, an article of manufacture containing materials useful for the diagnosis or treatment of the disorders described above is provided The article of manufacture comprises a container and a label Suitable containers include, for example, bottles, vials, syringes, and test tubes The containers may be formed from a variety of materials such as glass or plastic The container holds a composition which is effective for diagnosing or treating the condition and may have a sterile access port (for example the container may be an intravenous solution bag or a vial having a stopper pierceable by a hypodermic injection needle) The active agent in the composition is an anti-tumor agent of the present invention The label on, or associated with, the container indicates that the composition is used for diagnosing or treating the condition of choice The article of manufacture may further comprise a second container comprising a pharmaceutically- acceptable buffer such as phosphate-buttered saline, Ringer s solution and dextrose solution It may further include other materials desirable from a commercial and user standpoint, including other buffers diluents, filters, needles, syringes, and package inserts with instructions tor use The following examples are offered for illustrative purposes only and are not intended to limit the scope of the present invention in any way All patent and literature references cited in the present specification are hereby incorporated by reference in their entirety EXAMPLES Commercially available reagents referred to in the examples were used according to manufacturer s instructions unless otherwise indicated The source of those cells identified in the following examples, and throughout the specification, by ATCC accession numbers is the American Type Culture Collection Manassas, VA EXAMPLE 1 Extracellular Domain Homology Screening to Identify Novel Polypeptides and cDNA Encoding Therefor The extracellular domain (ECD) sequences (including the secretion signal sequence, if any) from about 950 known secreted proteins from the Swiss-Prot public database were used to search EST databases The EST databases included public databases (e g , Dayhoff, GenBank), and proprietary databases (e g LIFESEQ ® , Incyte Pharmaceuticals, Palo Alto, CA) The search was performed using the computer program BLAST or BLAST-2 (Altschul et al , Methods in Enzymology. 266 460-480 ( 1996)) as a comparison of the ECD protein sequences to a 6 frame translation of the EST sequences Those comparisons with a BLAST score of 70 (or in some cases, 90) or greater that did not encode known proteins were clustered and assembled into consensus DNA sequences with the program ' phrap' (Phil Green, University of Washington, Seattle, WA) Using this extracellular domain homology screen, consensus DNA sequences were assembled relative to the other identified EST sequences using phrap In addition, the consensus DNA sequences obtained were often (but not always) extended using repeated cycles of BLAST or BLAST 2 and phrap to extend the consensus sequence as far as possible using the sources of EST sequences discussed above Based upon the consensus sequences obtained as described above, oligonucleotides y ere then synthesized and used to identify by PCR a cDNA library that contained the sequence of interest and for use as probes to isolate a clone of the full-length coding sequence for a PRO polypeptide Forward and reverse PCR primers generally range from 20 to 30 nucleotides and are often designed to give a PCR product of about 100- 1000 bp in length The probe sequences are typically 40-55 bp in length In some cases, additional oligonucleotides are synthesized when the consensus sequence is greater than about 1 1 5 kbp In order to screen several libraries for a full-length clone, DNA from the libraries was screened by PCR amplification, as per Ausubel et al , Current Protocols in Molecular Biology, with the PCR primer pair A positive library was then used to isolate clones encoding the gene of interest using the probe oligonucleotide and one of the primer pairs The cDNA libraries used to isolate the cDNA clones were constructed by standard methods using commercially available reagents such as those from Invitrogen, San Diego, CA The cDNA was primed with o go dT containing a Notl site linked with blunt to Sail hemikinased adaptors cleayed with Notl, sized appropriately by gel electrophoresis, and cloned in a defined orientation into a suitable cloning vector (such as pRKB or pRKD pRK5B is a precursor ot pRK5D that does not contain the Sfil site, see, Holmes et al , Science, 253 1278 1280 (1991)) in the unique Xhol and Notl sites EXAMPLE 2 Isolation of cDNA Clones bv Amylase Screening 1 Preparation of ohgo dT primed cDNA library mRNA was isolated from a human tissue of interest using reagents and protocols from Invitrogen, San Diego, CA (Fast Track 2) This RNA was used to generate an ohgo dT primed cDNA library in the vector pRK5D using reagents and protocols from Life Technologies, Gaithersburg, MD (Super Script Plasmid System) In this procedure, the double stranded cDNA was sized to greater than 1000 bp and the Sall/Notl hnkered cDNA was cloned into Xhol/Notl cleaved vector pRK5D is a cloning vector that has an sp6 transcription initiation site followed by an Sfil restriction enzyme site preceding the Xhol/Notl cDNA cloning sites 2 Preparation of random primed cDNA library A secondary cDNA library was generated in order to preferentially represent the 5' ends of the primary cDNA clones Sp6 RNA was generated from the primary library (described above), and this RNA was used to generate a random primed cDNA library in the vector pSST-AMY 0 using reagents and protocols from Life Technologies (Super Script Plasmid System, referenced above) In this procedure the double stranded cDNA was sized to 500-1000 bp, hnkered with blunt to Notl adaptors, cleaved with Sfil, and cloned into Sfil/Notl cleaved vector pSST-AMY 0 is a cloning vector that has a yeast alcohol dehydrogenase promoter preceding the cDNA cloning sites and the mouse amylase sequence (the mature sequence without the secretion signal) followed by the yeast alcohol dehydrogenase terminator, after the cloning sites Thus, cDNAs cloned into this vector that are fused in frame with amylase sequence will lead to the secretion of amylase from appropriately transfected yeast colonies 3 Transformation and Detection DNA from the library described in paragraph 2 above was chilled on ice to which was added electrocompetent DH10B bacteria (Life Technologies, 20 ml) The bacteria and vector mixture was then electroporated as recommended by the manufacturer Subsequently, SOC media (Life Technologies, 1 ml) was added and the mixture was incubated at 37 °C for 30 minutes The transformants were then plated onto 20 standard 150 mm LB plates containing ampicillm and incubated for 16 hours (37 °C) Positive colonies were scraped off the plates and the DNA was isolated from the bacterial pellet using standard protocols, e g , CsCl-gradient The purified DNA was then carried on to the yeast protocols below The yeast methods were divided into three categories ( 1 ) Transformation of yeast with the plasmid cDN A combined vector, (2) Detection and isolation of yeast clones secreting amylase, and (3) PCR amplification ot the insert directly from the yeast colony and purification of the DNA for sequencing and further analysis The yeast strain used was HD56-5 A (ATCC-90785) This strain has the following genotype MAT alpha, ura3-52, leu2 3 leu2 1 12, hιs3- l 1 , hιs3-15, MAL + , SUC + GAL + Preferably, yeast mutants can be employed that have deficient post-translational pathway s Such mutants may have translocation deficient alleles in seel 1 secll sec62. with truncated se l ] being most preferred Alternatively antagonists (including antisense nucleotides and/or ligands) which interfere with the normal operation of these genes other proteins implicated in this post translation pathway (e g , SECόlp, SEC72p, SEC62p, SEC63p TDJ lp or SSA lp-4p) or the complex formation of these proteins may also be preferably employed in combination with the amylase-expressing yeast Transformation was performed based on the protocol outlined by Gietz et al , Nucl Acid Res , 20 1425 (1992) Transformed cells were then inoculated from agar into YEPD complex media broth (100 ml) and grown overnight at 30°C The YEPD broth was prepared as described in Kaiser et al , Methods in Yeast Genetics, Cold Spring Harbor Press, Cold Spring Harbor, NY, p 207 (1994) The overnight culture was then diluted to about 2 x 10 6 cells/ml (approx OD^ O 1 ) into fresh YEPD broth (500 ml) and regrown to 1 x 10 7 cells/ml (approx 00^=0 4-0 5) The cells were then harvested and prepared for transformation by transfer into GS3 rotor bottles in a Sorval GS3 rotor at 5,000 rpm for 5 minutes, the supernatant discarded, and then resuspended into sterile water, and centπfuged again in 50 ml falcon tubes at 3,500 rpm in a Beckman GS 6KR centrifuge The supernatant was discarded and the cells were subsequently washed with LiAc/TE (10 ml, 10 mM Tπs-HCl, 1 mM EDTA pH 7 5 100 mM LijOOCCH , and resuspended into LiAc/TE (2 5 ml) Transformation took place by mixing the prepared cells (100 μ\) with freshly denatured single stranded salmon testes DNA (Lotstrand Labs, Gaithersburg, MD) and transforming DNA (1 μg, vol < 10 μ\) in microfuge tubes The mixture was mixed briefly by vortexmg, then 40% PEG/TE (600 μl, 40% polyethylene glycol-4000, 10 mM Tπs-HCl, 1 mM EDTA, 100 mM Lι 2 OOCCH 3 , pH 7 5) was added This mixture was gently mixed and incubated at 30°C while agitating for 30 minutes The cells were then heat shocked at 42°C for 15 minutes, and the reaction vessel centπfuged in a microfuge at 12,000 rpm for 5-10 seconds, decanted and resuspended into TE (500 μl, 10 mM Tπs-HCl, 1 mM EDTA pH 7 5) followed by recentπfugation The cells were then diluted into TE (1 ml) and aliquots (200 μl) were spread onto the selective media previously prepared in 150 mm growth plates (VWR) Alternatively, instead of multiple small reactions, the transformation was performed using a single, large scale reaction, wherein reagent amounts were scaled up accordingly The selective media used was a synthetic complete dextrose agar lacking uracil (SCD-Ura) prepared as described in Kaiser et al , Methods in Yeast Genetics. Cold Spring Harbor Press, Cold Spring Harbor, NY, p 208- 210 (1994) Transformants were grown at 30°C for 2-3 days The detection of colonies secreting amylase was performed by including red starch in the selective growth media Starch was coupled to the red dye (Reactive Red- 120, Sigma) as per the procedure described by Biely et al . Anal Biochem . 172 176-179 (1988) The coupled starch was incorporated into the SCD-Ura agar plates at a final concentration of 0 15% (w/v), and was buffered with potassium phosphate to a pH of 7 0 (50-100 mM final concentration) The positive colonies were picked and streaked across fresh selective media (onto 150 mm plates) in order to obtain well isolated and identifiable single colonies Well isolated single colonies positive for amylase secretion were detected by direct incorporation of red starch into buffered SCD-Ura agar Positiv e colonies were determined by their ability to break dov n starch resulting in a clear halo around the posi e colony visualized directly 4 Isolation of DNA by PCR Amplification When a positive colony was isolated, a portion of it was picked by a toothpick and diluted into sterile water (30 μl) in a 96 well plate At this time, the positive colonies were either frozen and stored for subsequent analysis or immediately amplified An aliquot of cells (5 μl) was used as a template for the PCR reaction in a 25 μl volume containing 0 5 μl Klentaq (Clontech, Palo Alto, CA). 4 0 μl 10 mM dNTP's (Perkin Elmer-Cetus), 2 5 μl Kentaq buffer (Clontech), 0 25 μl forward ohgo 1 , 0 25 μl reverse ohgo 2, 12 5 μl distilled water The sequence of the forward oligonucleotide 1 was 5'-TGTAAAACGACGGCCAGTTAAATAGACCTGCAATTATTAATCT 3' (SEQ ID NO 57) The sequence of reverse oligonucleotide 2 was 5'-CAGGAAACAGCTATGACCACCTGCACACCTGCAAATCCATT 3' (SEQ ID NO 58) PCR was then performed as follows a Denature 92°C, 5 minutes b 3 cycles of Denature 92°C, 30 seconds Anneal 59°C, 30 seconds Extend 72°C, 60 seconds 3 cycles of Denature 92°C, 30 seconds Anneal 57 °C, 30 seconds Extend 72°C, 60 seconds 25 cycles of Denature 92°C, 30 seconds Anneal 55°C, 30 seconds Extend 72°C, 60 seconds Hold 4°C The underlined regions of the oligonucleotides annealed to the ADH promoter region and the amylase region, respectively, and amplified a 307 bp region from vector pSST-AMY 0 when no insert was present Typically, the first 18 nucleotides of the 5' end of these oligonucleotides contained annealing sites for the sequencing primers Thus, the total product of the PCR reaction from an empty vector was 343 bp However, signal sequence-fused cDNA resulted in considerably longer nucleotide sequences Following the PCR, an aliquot of the reaction (5 μl) was examined by agarose gel electrophoresis in a 1 % agarose gel using a Tπs-Borate-EDTA (TBE) buffering system as described by Sambrook et al , supra Clones resulting in a single strong PCR product larger than 400 bp were further analyzed by DNA sequencing after purification with a 96 Qiaquick PCR clean-up column (Qiagen Inc , Chatsworth, CA) EXAMPLE 3 Isolation of cDNA Clones Using Signal Algorithm Analysis Various polypeptide-encoding nucleic acid sequences were identified by applying a proprietary signal sequence finding algorithm developed by Genentech, Inc , (South San Francisco CA) upon ESTs as well as clustered and assembled EST fragments from public (e g , GenBank) and/or private (LIFESEQ®, Incyte Pharmaceuticals, Inc , Palo Alto, CA) databases The signal sequence algorithm computes a secretion signal score based on the character of the DNA nucleotides surrounding the first and optionally the second methionine codon(s) (ATG) at the 5 -end of the sequence or sequence fragment under consideration The nucleotides following the first ATG must code for at least 35 unambiguous amino acids without any stop codons If the first ATG has the required amino acids, the second is not examined If neither meets the requirement, the candidate sequence is not scored In order to determine whether the EST sequence contains an authentic signal sequence, the DNA and corresponding amino acid sequences surrounding the ATG codon are scored using a set of seven sensors (evaluation parameters) known to be associated with secretion signals Use of this algorithm resulted in the identification of numerous polypeptide-encoding nucleic acid sequences EXAMPLE 4 Isolation of cDNA Clones Encoding Human PRO240 A consensus DNA sequence was assembled relative to other EST sequences using phrap as described in Example 1 above This consensus sequence is designated herein as DNA30873 Based on the DNA30873 consensus sequence, oligonucleotides were synthesized 1 ) to identify by PCR a cDNA library that contained the sequence of interest, and 2) for use as probes to isolate a clone of the full-length coding sequence for PRO240 PCR primers (forward and reverse) were synthesized forward PCR primer 5'-TCAGCTCCAGACTCTGATACTGCC-3' (SEQ ID NO 59) reverse PCR primer 5'-TGCCTTTCTAGGAGGCAGAGCTCC-3' (SEQ ID NO 60) Additionally, a synthetic oligonucleotide hybridization probe was constructed from the consensus DNA30873 sequence which had the following nucleotide sequence hybridization probe 5'-GGACCCAGAAATGTGTCCTGAGAATGGATCTTGTGTACCTGATGGTCCAG 3' (SEQ ID NO 61 ) In order to screen several libraries for a source of a full-length clone, DNA from the libraries was screened by PCR amplification with the PCR primer pair identified above A positive library was then used to isolate clones encoding the PRO240 gene using the probe oligonucleotide and one ot the PCR primers RNA for construction of the cDNA libraries was isolated from human fetal liver tissue The cDNA libraries used to isolate the cDNA clones were constructed by standard methods using commercially available reagents such as those from Invitrogen, San Diego, CA The cDNA was primed with ohgo dT containing a Notl site, linked with blunt to Sail hemikinased adaptors, cleaved with Notl, sized appropriately by gel electrophoresis, and cloned in a defined orientation into a suitable cloning vector (such as pRKB or pRKD, pRK5B is a precursor of pRK5D that does not contain the Sfil site, see. Holmes et al . Science.253 1278-1280 ( 1991 )) in the unique Xhol and Notl sites DNA sequencing ot the clones isolated as described above gave the full length DNA sequence tor a full-length PRO240 polypeptide (designated herein as DNA34387-1 138 [Figure 1 , SEQ ID NO 1 ]) and the derived protein sequence for that PRO240 polypeptide The full length clone identified above contained a single open reading frame with an apparent translational initiation site at nucleotide positions 12-14 and a stop signal at nucleotide positions 699-701 (Figure 1 , SEQ ID NO 1 ) The predicted polypeptide precursor is 229 amino acids long and is shown in Figure 2 (SEQ ID NO 2) Analysis of the full-length PRO240 sequence shown in Figure 2 (SEQ ID NO 2 ) evidences the presence of a variety of important polypeptide domains as shown in Figure 2, wherein the locations gn en for those important polypeptide domains are approximate as described above Analysis of the full-length PRO240 sequence evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 30 and a transmembrane domain from about amino acid 198 to about amino acid 212 Clone DNA34387-1 138 has been deposited with ATCC on September 16, 1997 and is assigned ATCC deposit no 209260 An analysis of the Dayhoff database (version 35 45 S wissProt 35), using the ALIGN-2 sequence alignment analysis of the full-length sequence shown in Figure 2 (SEQ ID NO 2), evidenced sequence identity between the PRO240 amino acid sequence and the serrate precursor protein from Drosophilia melanogaster and the C-serrate- 1 protein from Gallus gallus (30% and 35%, respectively) EXAMPLE 5 Isolation of cDNA Clones Encoding Human PRQ381 A consensus DNA sequence was assembled relative to other EST sequences using phrap as described in Example 1 above This consensus sequence is designated herein as DNA39651 Based on the DNA39651 consensus sequence, oligonucleotides were synthesized 1 ) to identify by PCR a cDNA library that contained the sequence of interest, and 2) for use as probes to isolate a clone of the full-length coding sequence for PR0381 A pair of PCR primers (forward and reverse) were synthesized forward PCR primer (39651 fl ) 5'-CTTTCCTTGCTTCAGCAACATGAGGC-3' (SEQ ID NO 62) reverse PCR primer (39651 rl ) 5'-GCCCAGAGCAGGAGGAATGATGAGC-3' (SEQ ID NO 63) Additionally, a synthetic oligonucleotide hybridization probe was constructed from the consensus DNA39651 sequence which had the following nucleotide sequence hybridization probe (39651 p1 ) 5'-GTGGAACGCGGTCTTGACTCTGTTCGTCACTTCTTTGATTGGGGCTTTG-3' (SEQ ID NO 64) In order to screen several libraries for a source of a full-length clone, DNA from the libraries was screened by PCR amplification with the PCR pπmer pair identified aboy e A positive library was then used to isolate clones encoding the PR0381 gene using the probe oligonucleotide and one of the PCR primers RNA tor construction of the cDNA libraries was isolated from human fetal kidney tissue (LIB227) DNA sequencing of the isolated clones isolated as described above gave the full-length DNA sequence for DNA44194-1317 [Figure 3, SEQ ID NO 3], and the derived protein sequence for PR0381 The entire coding sequence of DNA44194-1317 is included in Figure 3 (SEQ ID NO 3) Clone DNA44194-1317 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 174-176, and an apparent stop codon at nucleotide positions 807-809 The predicted polypeptide precursoπs 21 1 amino acids long Analysis of the full-length PR0381 sequence shown in Figure 4 (SEQ ID NO 4) evidences the presence of a variety of important polypeptide domains, wherein the locations given for those important polypeptide domains are approximate as described above Analysis of the full-length PR0381 polypeptide shown in Figure 4 evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 20, a potential N-glycosylation site from about amino acid 176 to about amino acid 180, an endoplasmic reticulum targeting sequence from about amino acid 208 to about amino acid 212, FKBP-type peptidyl- prolyl cis-trans isomerase sites from about amino acid 78 to about amino acid 1 15. and from about amino acid 1 18 to about amino acid 132, EF-hand calcium binding domains from about amino acid 140 to about amino acid 160, from about amino acid 184 to about amino acid 204, and from about amino acid 191 to about amino acid 204, and an S-100/ICaBP type calcium binding domain from about ammo acid 183 to about amino acid 201 Clone DNA44194-1317 has been deposited with the ATCC on April 28, 1998 and is assigned ATCC deposit no 209808 The full-length PR0381 protein shown in Figure 4 has an estimated molecular weight of about 24, 172 daltons and a pi of about 5 99 Analysis of the amino acid sequence of the full-length PR0381 polypeptide suggests that it possesses sugnificant sequence similarity to FKBP lmmunophihn proteins, thereby indicating that PR0381 may be a novel FKBP immunophilin homolog More specifically, an analysis of the Dayhoff database (version 35 45 SwissProt 35), using a WU-BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 4 (SEQ ID NO 4), revealed sequence identity between the PR0381 amino acid sequence and the following Dayhoff sequences AF040252 , 149669, P_R93551 , S71238, CELC05C8 , CEU27353_1 , MIP_TRYCR, CEZC455_3, FKB4_HUM AN and 140718 EXAMPLE 6 Isolation of cDNA Clones Encoding Human PRQ534 A consensus sequence was obtained relative to a variety of EST sequences as described in Example 1 above, wherein the consensus sequence obtained is herein designated DNA43038 Based on the 43048 consensus sequence, oligonucleotides were synthesized 1 ) to identity by PCR a cDNA library that contained the sequence of interest, and 2) for use as probes to isolate a clone of the full-length coding sequence for PR0534 A pair of PCR primers (forward and reverse) were synthesized forward PCR primer 5'-CACAGAGCCAGAAGTGGCGGAATC-3' (SEQ ID NO 65) reverse PCR primer 5'-CCACATGTTCCTGCTCTTGTCCTGG-3 (SEQ ID NO 66) Additionally, a synthetic oligonucleotide hybridization probe was constructed from the consensus DNA43038 sequence which had the following nucleotide sequence hybridization probe 5'-CGGTAGTGACTGTACTCTAGTCCTGTTTTACACCCCGTGGTGCCG 3' (SEQ ID NO 67) In order to screen several libraries for a source of a full length clone, DNA from the libraries was screened by PCR amplification with the PCR primer pair identified above A positn e library was then used to isolate clones encoding the PR0534 gene using the probe oligonucleotide and one of the PCR primers RNA for construction of the cDNA libraries was isolated from human fetal lung tissue (LIB26) DNA sequencing of the clones isolated as descπbed above gave the full-length DNA sequence for PR0534 [herein designated as DNA48333-1321 ] (SEQ ID NO 5) and the derived protein sequence for PR0534 The entire nucleotide sequence of DNA48333 1321 is shown in Figure 5 (SEQ ID NO 5) Clone DNA48333-1321 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 87-89 and ending at the stop codon at nucleotide positions 1 167-1 169 (Figure 5) The predicted polypeptide precursor is 360 amino acids long (Figure 6) The full-length PR0534 protein shown in Figure 6 has an estimated molecular weight of about 39,885 daltons and a pi of about 4 79 Clone DNA48333-1321 has been deposited with ATCC on March 26, 1998 and is assigned ATCC deposit no 209701 It is understood that the deposited clone contains the actual sequence, and that the sequences provided herein are representative based on current sequencing techniques Analysis of the amino acid sequence of the full-length PR0534 polypeptide suggests that portions of it possess significant sequence identity with the protein disulfide isomerase, thereby indicating that PR0534 may be a novel disulfide isomerase Still analyzing the ammo acid sequence of PR0534, the signal peptide is at about amino acids 1 -25 of SEQ ID NO 6 The transmembrane domain is at about amino acids 321 -340 of SEQ ID NO 6 The disulfide isomerase corresponding region is at about amino acids 212-302 of SEQ ID NO 6 The thioredoxin domain is at about amino acids 21 1 -228 of SEQ ID NO 6 N-glycosylation sites are at about amino acids 165- 169, 181-185, 187-191 , 194-198, 206-210, 278-282, and 293-297 of SEQ ID NO 6 N-myπstoylation sites are at about amino acids 32-38, 70-76, 1 1 1-1 17, 1 15-121 , 1 18-124, and 207-213 of SEQ ID NO 6 An amidation site is at about amino acids 5-9 of SEQ ID NO 6 The corresponding nucleotides can routinely be determined from the sequences provided herein PR0534 has a transmembrane domain rather than an ER retention peptide like other protein disulfide isomerases Additionally, PR0534 may have an intron at the 5 prime end EXAMPLE 7 Isolation of cDNA Clones Encoding Human PRO540 A consensus DNA sequence was assembled relative to other EST sequences using phrap as described in Example 1 above This consensus sequence is designated herein as DNA39631 Based on the DNA39631 consensus sequence, oligonucleotides were synthesized 1 ) to identify by PCR a cDNA library that contained the sequence of interest, and 2) for use as probes to isolate a clone of the full-length coding sequence for PRO540 A pair of PCR primers (forv,ard and reverse) were synthesized forward PCR primer (39631 f 1 ) 5'-CTGGGGCTACACACGGGGTGAGG 3' (SEQ ID NO 68) reverse PCR primer (39631 rl ) 5'-GGTGCCGCTGCAGAAAGTAGAGCG 3' (SEQ ID NO 69) hybridization probe (39631 p 1 ) 5'-GCCCCAAATGAAAACGGGCCCTACTTCCTGGCCCTCCGCGAGATG-3' (SEQ ID NO 70) In order to screen several libraries for a source of a full-length clone, DNA from the libraries was screened by PCR amplification with one of the PCR primer pairs identified above A positive library was then used to isolate clones encoding the PRO540 gene using the probe oligonucleotide and one of the PCR primers RNA for construction ot the cDNA libraries was isolated from human fetal kidney tissue (LIB227) The cDNA libraries used to isolate the cDNA clones were constructed by standard methods using commercially available reagents such as those from Invitrogen, San Diego, CA The cDNA was primed was ohgo dT containing a Notl site, linked with blunt to Sail hemikinased adaptors, cleaved with Notl, sized appropriately by gel electrophoresis, and cloned in a defined orientation into a suitable cloning vector (such as pRKB orpRKD, pRKSB is a precursor of pRK5D that does not contain the Sfil site, see, Holmes et al , Science, 253 1278-1280 (1991 )) in the unique Xhol and Notl sites DNA sequencing of the clones isolated as described above gave the full-length DNA sequence for PRO540 herein designated as DNA44189- 1322 (SEQ ID NO 7) Clone DNA44189-1322 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 21 -23 and ending at the stop codon at nucleotide positions 1257- 1259 (Figure 7) The predicted encoded polypeptide precursor is 412 amino acids long (Figure 8, SEQ ID NO 8) The full-length PRO540 protein shown in Figure 8 has an estimated molecular weight of about 46,658 daltons and a pi of about 6 65 Important regions of the amino acid sequence of PRO540 (including approximate locations) include the signal peptide (residues 1-28), potential N-glycosylation sites (residues 99-103, 273-277, 289-293, 398-402), a potential lipid substrate binding site (residues 147-164), a sequence typical of lipases and seπne proteins (residues 189-202), tyrosine kinase phosphorylation sites (residues 165-174 and 178-186), a beta-transducin family Trp-Asp repeat (residues 353-366) and N-myπstoylation sites (residues 200-206, 227-233, 232-238 and 316-322) Clone DNA44189-1322 was deposited with the ATCC on March 26, 1998 and is assigned ATCC deposit no 209699 EXAMPLE 8 Isolation of cDNA Clones Encoding Human PRQ698 A yeast screening assay was employed to identify cDNA clones that encoded potential secreted proteins Use of this yeast screening assay allowed identification of a single cDNA clone herein designated as DNA39906 Based on the DNA39906 sequence, oligonucleotides were synthesized 1 ) to identify by PCR a cDNA library that contained the sequence of interest, and 2) for use as probes to isolate a clone of the full-length coding sequence for PR0698 In order to screen several libraries for a full-length clone, DNA from the libraries was screened by PCR amplification, as per Ausubel et al . Current Protocols in Molecular Biology with the PCR primer pair A posi e library was then used to isolate clones encoding the gene ot interest using the probe oligonucleotide and one ot the pπmer pairs PCR primers (tory ard and reverse) were synthesized forward PCR primer 5 -AGCTGTGGTCATGGTGGTGTGGTG-3' (SEQ ID NO 71 ) reverse PCR primer 5'-CTACCTTGGCCATAGGTGATCCGC-3' (SEQ ID NO 72) Additionally, a synthetic oligonucleotide hybridization probe was constructed from the consensus DNA39906 sequence which had the following nucleotide sequence hybridization probe 5'-CATCAGCAAACCGTCTGTGGTTCAGCTCAACTGGAGAGGGTT-3' (SEQ ID NO 73) In order to screen several libraries tor a source ot a full-length clone, DNA from the libraries was screened by PCR amplification with the PCR primer pair identified above A posim e library was then used to isolate clones encoding the PR0698 gene using the probe oligonucleotide and one ot the PCR primers RNA for construction of the cDNA libraries was isolated from human bone marrow tissue (LIB255) The cDNA libraries used to isolate the cDNA clones were constructed by standard methods using commercially available reagents such as those from Invitrogen, San Diego, CA The cDNA was primed with ohgo dT containing a Notl site, linked with blunt to Sail hemikmased adaptors, cleaved with Notl, sized appropriately by gel electrophoresis, and cloned in a defined orientation into a suitable cloning vector (such as pRKB or pRKD, pRKSB is a precursor of pRK5D that does not contain the Sfil site, see, Holmes et al , Science, 253 1278-1280 (1991 )) in the unique Xhol and Notl sites A full length clone was identified (herein designated DNA48320-1433 [SEQ ID NO 9])that contained a single open reading frame with an apparent translational initiation site at nucleotide positions 14-16 and ending at the stop codon found at nucleotide positions 1544-1546 (Figure 9. SEQ ID NO 9) The predicted polypeptide precursor is 510 amino acids long, and has a calculated molecular weight of approximately 57.280 daltons and an estimated pi of approximately 5 61 Analysis of the full-length PR0698 sequence shown in Figure 10 (SEQ ID NO.10) evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 20, potential N-glycosylation sites from about amino acid 72 to about amino acid 76, from about amino acid 136 to about amino acid 140, from about amino acid 193 to about amino acid 197, from about amino acid 253 to about amino acid 257, from about amino acid 352 to about amino acid 356, and from about amino acid 41 1 to about amino acid 415, a tyrosine kinase phosphorylation site from about amino acid 449 to about amino acid 457, an amino acid block having homology to legume lectin beta-chain proteins from about amino acid 20 to about amino acid 40, N- myπstoylation sites from about amino acid 16 to about amino acid 22. from about amino acid 39 to about amino acid 45, from about ammo acid 53 to about amino acid 59, from about amino acid 61 to about amino acid 67, from about amino acid 63 to about amino acid 69, from about amino acid 81 to about amino acid 87, from about amino acid 249 to about ammo acid 255, from about amino acid 326 to about amino acid 332, from about amino acid 328 to about amino acid 334, and from about amino acid 438 to about amino acid 444, and an am o acid block having homology to the HBGF/FGF family of proteins from about amino acid 338 to about amino acid 366 Clone DNA48320-1433 has been deposited with ATCC on May 27 1998 and is assigned ATCC deposit no 209904 Analysis of the amino acid sequence of the full-length PR0698 polypeptide suggests that it possesses significant sequence similarity to the olfactomedm protein, thereby indicating that PR0698 may be a novel olfactomedin homolog More specifically, an analysis ot the Dayhoff database (yersion 35 45 SwissProt 35) evidenced significant homology between the PR0698 amino acid sequence and the following Dayhoff sequences OLFM_RANCA, 173637, AB006686S3_] , RNU78105_1 RNU72487_1 , P_R98225 CELC48E7_4. CEF1 1 C3_3, XLU85970 and S42257 EXAMPLE 9 Isolation of cDNA Clones Encoding Human PRQ982 DNA57700- 1408 was identified by applying the proprietary signal sequence finding algorithm described in Example 3 above Use of the above described signal sequence algorithm allowed identification of an EST cluster sequence from the Incyte database, designated herein as Incyte cluster sequence no 43715 This EST cluster sequence was then compared to a variety of expressed sequence tag (EST) databases which included public EST databases (e g , GenBank) and a proprietary EST DNA database (LIFESEQ* , Inc te Pharmaceuticals, Palo Alto CA) to identify existing homologies The homology search was performed using the computer program BLAST or BLAST2 (Altshul etal , Methods in Enzvmolgy.266 460-480 ( 1996)) Those comparisons resulting in a BLAST score of 70 (or in some cases, 90) or greater that did not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program "phrap" (Phil Green, University of Washington, Seattle, Washington) The consensus sequence obtained therefrom is herein designated DNA56095 In light of an observed sequence homology between the DNA56095 consensus sequence and Merck EST no AA024389, from the Merck database, the Merck EST no AA024389 was purchased and the cDNA insert was obtained and sequenced It was found herein that the cDNA insert encoded a full-length protein The sequence of this cDNA insert is shown in Figure 1 1 (SEQ ID NO 1 1 ) and is herein designated as DNA57700-1408 Clone DNA57700- 1408 (Figure 1 1 , SEQ ID NO 1 1 ) contains a single open reading frame with an apparent translational initiation site at nucleotide positions 26-28 and ending at the stop codon at nucleotide positions 401 403 (Figure 1 1 , SEQ ID NO 1 1 ) The predicted polypeptide precursor is 125 amino acids long (Figure 12) and has a calculated molecular weight ot approximately 14,198 daltons and an estimated pi of approximately 9 01 (Figure 12) Further analysis of the PR0982 (SEQ ID NO 12) polypeptide of Figure 12 rey eals a signal peptide from about amino acid residues 1 to about amino acid 21 , N-myπstoylation sites from about amino acid 33 to about amino acid 39 and from about amino acid 70 to about amino acid 76, and a potential anaphylatoxin domain from about amino acid residue 50 to about amino acid 60 A cDNA clone containing DNA57700- 1408 was deposited with the ATCC on January 12, 1999 and is assigned ATCC deposit No 203583 EXAMPLE 10 Isolation of cDNA Clones Encoding Human PRO 1005 DNA57708-141 1 was identified by applying the proprietary signal sequence finding algorithm described in Example 3 above Use of the above described signal sequence algorithm allowed identification of an ESTcluster sequence from the Incyte database, designated herein as Incyte cluster sequence no 49243 This EST cluster sequence was then compared to a variety of expressed sequence tag (EST) databases y hich included public EST databases (<? g , GenBank) and a proprietary EST DNA database (LIFESEQ ® , Incyte Pharmaceuticals, Palo Alto. CA) to identify existing homologies The homology search was performed using the computer program BLAST or BLAST2 (Altshul et al , Methods in Enzvmolgy.266 460-480 ( 1996)) Those comparisons resulting in a BLAST score of 70 (or in some cases, 90) or greater that did not encode kno n pi oteins were clustered and assembled into a consensus DNA sequence with the progra ' phrap" (Phil Green University of Washington. Seattle, Washington) The consensus sequence obtained therefrom is herein designated DNA56380 In light of an observed sequence homology between the DNA56380 consensus sequence and Merck EST no AA256657, from the Merck database, the Merck EST no AA256657 was purchased and the cDNA insert was obtained and sequenced It was found herein that the cDNA insert encoded a full-length protein The sequence of this cDNA insert is shown in Figure 1 (SEQ ID NO 13) and is herein designated as DNA57708-141 1 Clone DNA57708-141 1 (Figure 13, SEQ ID NO 13) contains a single open reading frame with an apparent translational initiation site at nucleotide positions 30-32 and ending at the stop codon at nucleotide positions 585- 587 (Figure 13, SEQ ID NO 13) The predicted polypeptide precursor is 185 amino acids long (Figure 14) The full-length PRO 1005 protein shown in Figure 14 (SEQ ID NO 14) has an estimated molecular weight of about 20,331 daltons and a pi of about 5 85 Analysis of the full-length PRO 1005 sequence shown in Figure 14 (SEQ ID NO.14) evidences the presence of important polypeptide domains as shown in Figure 14. wherein the locations given for those important polypeptide domains are approximate as described above Analysis of the full-length PRO1005 sequence shown in Figure 14 evidences the following a signal peptide from about amino acid 1 to about amino acid 20, N-myπstoylation sites from about amino acid 67 to about amino acid 73, from about amino acid 1 18 to about amino acid 124, and from about amino acid 163 to about amino acid 169. and a flavodoxin protein homology from about amino acid 156 to about amino acid 175 Clone DNA57708-141 1 has been deposited with ATCC on June 23, 1998 and is assigned ATCC deposit no 203021 An analysis of the Dayhoff database (version 35 45 SwissProt 35 ). using the ALIGN-2 sequence alignment analysis of the full-length sequence shown in Figure 14 (SEQ ID NO 14). evidenced sequence identity between the PRO1005 amino acid sequence and the following Dayhoff sequences DDU07187_1 , DDU87912 , CELD1007_14, A42239, DDU42597_1 , CYAG_DICD1. S50452, MRKC LEPN, P_R41998, and XYNA_RUMFL EXAMPLE 1 1 Isolation of cDNA Clones Encoding Human PRO 1007 A consensus DNA sequence was assembled relative to other EST sequences using phrap as described in Example 1 above Use of the ECD homology procedure described above resulted in the identification of an EST sequence designated Merck EST T70513, which was derived from human liver tissue (clone 83012 from library 341 ) Merck EST T70513 was obtained and further examined and sequenced, resulting in the isolation of the full-length DNA sequence herein designated DNA57690-1374 (Figure 15, SEQ ID NO 15) and the derived PROl 007 native sequence polypeptide (Figure 16, SEQ ID NO: 16) Clone DN A57690- 1374 (SEQ ID NO 15) contains a single open reading frame with an apparent translation initiation site at nucleotide positions 16- 18 and ending at the stop codon (TGA) at nucleotide positions 1054-1056 (Figure 15), as indicated by bolded underline The predicted PRO 1007 polypeptide precursor (SEQ ID NO 16) is 346 amino acids long (Figure 16), and has a calculated molecular v, eight of 35.971 daltons and a pi of 8 17 A cDNA clone containing DNA57690-1374 has been deposited with the ATCC on 9 June 1998. and has been assigned deposit numbei 209950 Analysis of the amino acid sequence ot PRO1007 (SEQ ID NO 16) reveals the putame signal peptide at about amino acid residues 1 -30, a transmembrane domain at about amino acid residues 325-346 N-glycosylation sites at about amino acid residues 1 18- 122, 129-133, 163-167, 176-180, 183-187 and 227-231 , a Ly-6/u-Par domain protein at about amino acid residues 17-37 and 209-223. N-myπstoylation sites at about amino acid residues 26-32, 43-49, 57-63, 66-72, 81 -87, 128-134, 171 -171 , 218-224, 298-304 and 310-316 and a prokaryotic membrane hpoprotein lipid attachment site at about amino acid residues 205-216 The corresponding nucleotides of the amino acids presented herein can be routinely determined given the sequences provided herein EXAMPLE 12 Isolation of cDNA Clones Encoding Human PROl 131 A cDNA sequence isolated in the amylase screen described in Example 2 above is herein designated DNA43546 The DNA43546 sequence was then compared to a variety of expressed sequence tag (EST) databases which included public EST databases (e g , GenBank) and a proprietary EST DNA database (LIFESEQ™, Incyte Pharmaceuticals, Palo Alto, CA) to identify existing homologies The homology search was performed using the computer program BLAST or BLAST2 (Altshul et al , Methods in Enzymology. 266 460-480 ( 1996)) Those comparisons resulting in a BLAST score of 70 (or in some cases, 90) or greater that did not encode known proteins were clustered and assembled into consensus DNA sequences with the program "phrap" (Phil Green, University of Washington, Seattle, Washington) The consensus sequence obtained therefrom is herein designated DNA45627 Based on the DNA45627 sequence, oligonucleotide probes were generated and used to screen a human library prepared as described in paragraph 1 of Example 2 aboye The cloning vector was pRK5B (pRK5B is a precursor of pRK5D that does not contain the Sfil site, see, Holmes et al , Science. 253 1278-1280 ( 1991 )), and the cDNA size cut was less than 2800 bp PCR primers (forward and 2 reverse) were synthesized forward PCR primer 5'-ATGCAGGCCAAGTACAGCAGCAC-3' (SEQ ID NO 74) reverse PCR primer 1 5'-CATGCTGACGACTTCCTGCAAGC-3' (SEQ ID NO 75) reverse PCR primer 2 5'-CCACACAGTCTCTGCTTCTTGGG-3' (SEQ ID NO 76) Additionally, a synthetic oligonucleotide hybridization probe was constructed from the DNA45627 sequence which had the following nucleotide sequence hybridization probe 5'-ATGCTGGATGATGATGGGGACACCACCATGAGCCTGCATT 3 (SEQ ID NO 77) In order to screen several libraries for a source ot a full-length clone, DNA from the libraries was screened by PCR amplification y\ ith the PCR primer pair identified aboy e A positive library was then used to isolate clones encoding the PROl 131 gene using the probe oligonucleotide and one ot the PCR primers A full length clone was identified that contained a single open reading frame with an apparent translational initiation site at nucleotide positions 144- 146, and a stop signal at nucleotide positions 984-986 (Figure 17 SEQ ID NO 17) The predicted polypeptide precursor is 280 ammo acids long, and has a calculated molecular weight of approximately 31 ,966 daltons and an estimated pi of approximately 6 26 The transmembrane domain sequence is at about amino acid residues 49 74 ot SEQ ID NO 18 N-glycosy lation sites are at about amino acid residues 95- 98 and 169 172 of SEQ ID NO 18, tyrosine kinase phosphorylation sites are at about amino acid residues 142-150 and 156- 164 of SEQ ID NO 18, N-myπstoylation sites are at about am o acid residues 130- 136 214-220 and 242- 248 of SEQ ID NO 18, and the region having sequence identity with LDL receptors is about amino acid residues 50-265 of SEQ ID NO 18 Clone DNA59777-1480 has been deposited with the ATCC on August 1 1 1998 and is assigned ATCC deposit no 2031 1 1 An analysis of the Dayhoff database (version 35 45 SwissProt 35) using a WU BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 18 (SEQ ID NO 18), evidenced some sequence identity between the PRO 1131 amino acid sequence and the following Dayhoff sequences ABO 10710_1 , 149053, 1491 15, RNU56863_1 , LY4A_MOUSE, 155686, MMU56404_1 , 149361 , AF030313_1 and MMU09739_1 EXAMPLE 13 Isolation of cDNA Clones Encoding Human PROl 157 DNA60292 1506 was identified by applying the proprietary signal sequence finding algorithm described in Example 3 above Use of the above described signal sequence algorithm allowed identification of an EST cluster sequence from the LIFESEQ ® database, designated Incyte EST cluster no 65816 This EST cluster sequence was then compared to a variety ot expressed sequence tag (EST) databases which included public EST databases (e g , GenBank) and a proprietary EST DNA database (LIFESEQ*", Incyte Pharmaceuticals, Palo Alto, CA) to identify existing homologies One or more of the ESTs was derived from a human mast cell line from normal human prostatic epithelial cells The homology search was performed using the computer program BLAST or BLAST2 (Altshul et al , Methods in Enzymology. 266 460-480 (1996)) Those comparisons resulting in a BLAST score of 70 (or in some cases, 90) or greater that did not encode known proteins were clustered and assembled into a consensus DNA sequence with the program "phrap" (Phil Green, University of Washington, Seattle, Washington) The consensus sequence obtained therefrom is herein designated as DNA56058 In light of the sequence homology between the DNA56058 consensus sequence and the Merck EST no AA516481 , Merck EST no AA516481 was purchased and the cDNA insert was obtained and sequenced The sequence of this cDNA insert is shown in Figure 19 (SEQ ID NO 19) and is herein designated as DNA60292- 1506 The entire coding sequence of DNA60292- 1506 is included in Figure 19 (SEQ ID NO 19) Clone DNA60292-1506 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 56-58 and ending at the stop codon at nucleotide positions 332-334 (Figure 19) The predicted polypeptide precursor is 92 amino acids long (Figure 20, SEQ ID NO 20) The full-length PRO 1 157 protein shov, n in Figure 20 has an estimated molecular weight ot about 9 360 daltons and a pi ot about 9 17 Analysis of the full- length PROl 1 7 sequence shown in Figure 20 (SEQ ID NO 20) evidences the presence of a variety of important polypeptide domains, wherein the locations given for those important polypeptide domains are approximate as described aboy e Analysis of the full-length PRO 1 157 sequence shown in Figure 20 evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 18, a putative transmembrane domain from about amino acid 51 to about amino acid 70, a glycosaminoglycan attachment site from about amino acid 40 to about amino acid 44 N-myπstoylation sites from about amino acid 34 to about amino acid 40, from about amino acid 37 to about amino acid 43 and from about amino acid 52 to about amino acid 58 and a prokaryotic membrane lipoprotein lipid attachment site from about amino acid 29 to about amino acid 40 Clone DNA60292-1506 has been deposited with ATCC on December 15, 1998 and is assigned ATCC deposit no 203540 An analysis of the Dayhoff database (version 35 45 SwissProt 35 ) using a WU BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 20 (SEQ ID NO 20), evidenced homology between the PROl 157 amino acid sequence and the following Dayhoff sequences PTPN_HUMAN, B69251 , 151419 AF019562 AF019563 , C21 1_HUMAN 137577, A39171 GAT5JV10USE ACR3_MOUSE 5H6_RAT, P_W31512, and S58082 EXAMPLE 14 Isolation of cDNA Clones Encoding Human PROl 199 A public expressed sequence tag (EST) DNA database (GenBank) was searched with the full-length murine m-FTZZl DNA (DNA53517), and an EST [designated AA311223 and renamed as DNA53028] was identified which showed homology to the m-FIZZl DNA Oligonucleotides probes based upon the above described EST sequence were then synthesized 1 ) to identify by PCR a cDNA library that contained the sequence of interest, and 2) for use as probes to isolate a clone of the full-length coding sequence for PROl 199 Forward and reverse PCR primers generally range from 20 to 30 nucleotides and are often designed to give a PCR product of about 100 1000 bp in length The probe sequences are typically 40-55 bp in length In order to screen several libraries tor a full-length clone, DNA from the libraries was screened by PCR amplification, as per Ausubel et al , Current Protocols in Molecular Biology, supra, with the PCR primer pair A positive library was then used to isolate clones encoding the gene of interest using the probe oligonucleotide and one of the primer pairs The oligonucleotide probes employed were as follows forward primer (h-FIZZ3 f) 5'-GGATTTGGTTAGCTGAGCCCACCGAGA-3' (SEQ ID NO 78) reverse primer (h-FIZZ3 r) 5'-GCACTGCGCGCGACCTCAGGGCTGCA-3' (SEQ ID NO 79) probe (h-FTZZ3 p) 5'-CTTATTGCCCTAAATATTAGGGAGCCGGCGACCTCCTGGATCCTCTCATT-3' (SEQ ID NO 80) In order to screen several libraries for a source of a full length clone, DNA from the libraries was screened by PCR amplification v. ith the PCR primer pair identified aboy e A posim e library was then used to isolate clones encoding the PRO l 199 gene using the probe oligonucleotide and one of the PCR primers RNA for construction of cDNA libraries was then isolated from human bone marrow tissue The cDNA libraries used to isolate the cDNA clones encoding human PROl 199 were constructed by standard methods using commercially available reagents such as those from Invitrogen, San Diego CA The cDNA was primed with ohgo dT containing a Notl site, linked with blunt to Sail hemikinased adaptors, clea ed with Notl, sized appropriately by gel electrophoresis and cloned in a defined orientation into a suitable cloning vector (such as pRKB or pRKD, pRK5B is a precursor of pRK5D that does not contain the Sfil site see, Holmes et al Science 253 1278-1280 (1991 )) in the unique Xhol and Notl A full length clone DNA65351 1366- 1 was identified that contained a single open reading frame with an apparent translational initiation site at nucleotide positions 25 27 and a stop signal at nucleotide positions 349-351 (Figure 21 , SEQ ID NO 21 ) The predicted polypeptide precursor is 108 amino acids long and has a calculated molecular weight ot approximately 1 1 ,419 daltons and an estimated pi ot approximately 7 05 Analysis of the full-length PROl 199 sequence shown in Figure 22 (SEQ ID NO 22) evidences the presence of a variety ot important polypeptide domains as shown in Figure 22, wherein the locations given for those important polypeptide domains are approximate as described aboy e Analysis of the full length PROl 199 polypeptide shown m Figure 22 evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 18, a cell attachment sequence motif (RGD) from about amino acid 57 to about amino acid 60, and N-myπstoylation sites from about amino acid 13 to about amino acid 19, from about amino acid 71 to about amino acid 77, from about ammo acid 75 to about amino acid 81 , from about amino acid 95 to about amino acid 101 , and from about amino acid 100 to about amino acid 106 Clone DN A65351 - 1366- 1 has been deposited with ATCC on May 12, 1998 and is assigned ATCC deposit no 209856 EXAMPLE 15 Isolation of cDNA Clones Encoding Human PROl 265 DNA60764-1533 was identified by applying the proprietary signal sequence finding algorithm described in Example 3 above Use of the above described signal sequence algorithm allowed identification of an EST cluster sequence from the LIFESEQ ® database, designated Incyte EST cluster no 86995 This EST cluster sequence was then compared to a variety of expressed sequence tag (EST) databases which included public EST databases (e g , GenBank) and a proprietary EST DNA database (LIFESEQ ® , Incyte Pharmaceuticals, Palo Alto, CA) to identify existing homologies The homology search was performed using the computer program BLAST or BLAST2 (Altshul et al , Methods in Enzymology. 266 460-480 (1996)) Those comparisons resulting in a BLAST score of 70 (or in some cases. 90) or greater that did not encode known proteins were clustered and assembled into a consensus DNA sequence with the program ' phrap" (Phil Green. University of Washington, Seattle, Washington) The consensus sequence obtained therefrom is herein designated as DNA55717 In light of the sequence homology between the DNA55717 consensus sequence and Incyte EST no 20965, Incyte EST no 20965 was purchased and the cDNA insert was obtained and sequenced The sequence of this cDNA insert is shown in Figure 23 (SEQ ID NO 23) and is herein designated as DNA60764-1533 The entire coding sequence of DNA60764 1533 is included in Figure 23 (SEQ ID NO 23) Clone DNA60764-1533 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 79-81 and ending at the stop codon at nucleotide positions 1780-1782 (Figure 23) The predicted polypeptide precursor is 567 ammo acids long (Figure 24 SEQ ID NO 24) The full-length PROl 265 protein shown in Figure 24 has an estimated molecular weight of about 62,881 daltons and a pi ot about 8 97 Analysis of the full-length PRO 1265 sequence shown in Figure 24 (SEQ ID NO 24) evidences the presence of a variety ol important polypeptide domains, wherein the locations given for those important polypeptide domains are approximate as described aboy e Analysis ot the full-length PRO 1265 sequence shown in Figure 24 evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 21 , N-glycosylation sites from about amino acid 54 to about amino acid 58. from about amino acid 134 to about amino acid 138, from about amino acid 220 to about ammo acid 224, and from about amino acid 559 to about amino acid 563, tyrosine kinase phosphorylation sites from about am o acid 35 to about amino acid 43 and from about amino acid 161 to about amino acid 169, N-myπstoylation sites from about amino acid 52 to about amino acid 58, from about amino acid 66 to about amino acid 74. from about amino acid 71 to about amino acid 77, from about amino acid 130 to about amino acid 136, from about amino acid 132 to about am o acid 138, from about amino acid 198 to about amino acid 204, and from about amino acid 371 to about amino acid 377, and a D-amino acid oxidase protein site from about amino acid 61 to about amino acid 81 Clone DNA60764-1533 has been deposited with ATCC on November 10, 1998 and is assigned ATCC deposit no 203452 An analysis of the Dayhoff database (version 35 45 SwissProt 35), using a WU-BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 24 (SEQ ID NO 24), evidenced significant sequence identity between the PROl 265 amino acid sequence and Dayhoff sequence no MMU70429_1 Sequence homology was also found to exist between the full-length sequence shown in Figure 24 (SEQ ID NO 24) and the following Dayhoff sequences BC542AJ , E69899, S76290, MTV014_14, AOFB_HUMAN, ZMJ002204 , S45812J , DBRNAPD_1 , and CRTl_SOYBN EXAMPLE 16 Isolation of cDNA Clones Encoding Human PRO 1286 DNA64903-1553 was identified by applying the proprietary signal sequence finding algorithm described in Example 3 above Use of the above described signal sequence algorithm allowed identification of an EST cluster sequence from the LIFESEQ ® database, designated Incyte EST cluster no 86809 This EST cluster sequence was then compared to a variety of expressed sequence tag (EST) databases which included public EST databases (e g , GenBank) and a proprietary EST DNA database (LIFESEQ ® , Incyte Pharmaceuticals. Palo Alto, CA) to identify existing homologies The homology search was performed using the computer program BLAST or BLAST2 (Altshul et al , Methods in Enzymology. 266 460-480 ( 1996)) Those comparisons resulting in a BLAST score of 70 (or in some cases, 90) or greater that did not encode known proteins were clustered and assembled into a consensus DNA sequence with the program "phrap" (Phil Green, University of Washington, Seattle, Washington) ESTs in the assembly included those identified from tumors, cell lines, or diseased tissue One or more of the ESTs was obtained from a cDNA library constructed from RNA isolated from diseased colon tissue The consensus sequence obtained therefrom is herein designated as DNA58822 In light of the sequence homology between the DNA58822 sequence and Incyte EST clone no 1695434 Incyte EST no 1695434 yvas purchased and the cDNA insert was obtained and sequenced The sequence of this cDNA insert is shown in Figure 25 (SEQ ID NO 25) and is herein designated as DNA64903-1553 The entire coding sequence of DNA64903- 1553 is included in Figure 25 (SEQ ID NO 25 ) Clone DNA64903-1553 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 93-95 and ending at the stop codon at nucleotide positions 372-374 (Figure 25) The predicted polypeptide precursor is 93 amino acids long (Figure 26, SEQ ID NO 26) The full-length PROl 286 protein shown in Figure 26 has an estimated molecular weight of about 10, 1 1 1 daltons and a pi of about 9 70 Analysis ot the full- length PRO 1286 sequence shown in Figure 26 (SEQ ID NO 26) evidences the presence of a variety of important polypeptide domains, wherein the locations given for those important polypeptide domains are approximate as described aboy e Analysis of the full-length PRO 1286 sequence shown in Figure 26 evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 18, and N-myπstoylation sites from about amino acid 15 to about amino acid 21 , from about amino acid 17 to about amino acid 23, from about amino acid 19 to about amino acid 25, from about amino acid 83 to about amino acid 89, and from about am o acid 86 to about amino acid 92 Clone DNA64903-1553 has been deposited with ATCC on September 15, 1998 and is assigned ATCC deposit no 203223 An analysis of the Dayhoff database (version 35 45 SwissProt 35), using a WU-BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 26 (SEQ ID NO 26), revealed some homology between the PROl 286 amino acid sequence and the following Dayhoff sequences SR5C_ARATH, CELC17H12_1 1 , MCPD_ENTAE, JQ2283, INVO_LEMCA, P_R07309, ADEVBCAGN_4, AF020947 , CELT23H2_1 , and MDH_STRAR EXAMPLE 17 Isolation of cDNA Clones Encoding Human PROl 313 A consensus DNA sequence was assembled relative to other EST sequences using phrap as described in Example 1 above This consensus sequence is designated herein as DNA64876 Based on the DNA64876 consensus sequence and upon a search for sequence homology with a proprietary Genentech EST sequence designated as DNA5771 1 , a Merck/Washington University EST sequence (designated R80613) was found to have significant homology with DNA64876 and DNA5771 1 Therefore, the Merck/Washington University EST clone no. R80613 was purchased and the insert thereof obtained and sequenced, thereby giving rise to the DNA64966- 1575 sequence shown in Figure 31 (SEQ ID NO 31 ), and the derived protein sequence for PR01313 The entire coding sequence of DNA64966-1575 is included in Figure 27 (SEQ ID NO.27) Clone DNA64966-1575 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 1 15-1 17, and an apparent stop codon at nucleotide positions 1036-1038 The predicted polypeptide precursor is 307 amino acids long, and has an estimated molecular weight of about 35,098 daltons and a pi of about 8 1 1. Analysis of the full-length PRO 1313 sequence shown in Figure 28 (SEQ ID NO 28) evidences the presence of a variety of important polypeptide domains, wherein the locations given for those important polypeptide domains are approximate as described aboy e Analysis of the full-length PROl 313 polypeptide shown in Figure 28 evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 15 transmembrane domains from about amino acid 134 to about amino acid 1 7 from about amino acid 169 to about amino acid 189 from about amino acid 230 to about amino acid 248 and from about amino acid 272 to about amino acid 285, N glycosylation sites from about amino acid 34 to about amino acid 38, from about amino acid 135 to about amino acid 139 and from about amino acid 203 to about amino acid 207, a tyrosine kinase phosphorylation site from about amino acid 59 to about amino acid 67, N-myπstoylation sites from about amino acid 165 to about amino acid 171 , from about amino acid 196 to about amino acid 202 from about amino acid 240 to about amino acid 246, and from about amino acid 247 to about amino acid 253 and an ATP/GTP binding site motif A (P-loop) from about amino acid 53 to about amino acid 61 Clone DNA64966-1575 has been deposited with the ATCC on January 12, 1999 and is assigned ATCC deposit no 203575 An analysis of the Dayhoff database (version 35 45 SwissProt 35) using a WU BLAST2 sequence alignment analysis ot the full length sequence shown in Figure 28 (SEQ ID NO 28) evidenced significant homology between the PR01313 amino acid sequence and the following Davhoff sequences CELT27A 1_3 CEF09C6_7 U93688_9, H64896, YDCX_ECOLI, and RNU06101 EXAMPLE 18 Isolation of cDNA Clones Encoding Human PROl 338 The use of yeast screens resulted in EST sequences which were then compared to various public and private EST databases in a manner similar to that described above under ECD homology (Example 1 ) and which resulted in the identification of Incyte EST2615184, an EST derived from cholecystitis gal 1 bladder tissue Analysis of the corresponding full-length sequence ultimately resulted in the isolation of DNA66667 (SEQ ID NO 29, Figure 29) and the derived PROl 338 native sequence protein (SEQ ID NO 30, Figure 30) DNA66667 (SEQ ID NO 29) as shown in Figure 29 contains a single open reading frame with a translation initiation site at about nucleotide residues 115-1 17 and ending at the stop codon (TAA) at nucleotide positions 2263-2265, as indicated by bolded underline The predicted PROl 338 polypeptide precursor (SEQ ID NO 30) is 716 amino acids in length (Figure 30), and has a calculated molecular weight of 80,716 daltons and a pi of 6 06 Analysis of the PROl 338 polypeptide (SEQ ID NO 30) of Figure 30 reveals a signal sequence at about amino acid residues 1 to 25, a transmembrane domain at about amino acid residues 508 to 530, N-glycosylation sites at about amino acid residues 69-73, 96- 100, 106-1 10, 1 17-121 , 385-389, 517-521 , 582-586 and 61 1-615, atyrosine kinase phosphorylation site at about residues 573-582, and N-myπstoylation sites at about amino acid residues 16-22, 224-230, 464-470, 637-643 and 698-704 A cDNA containing DNA66667 has been deposited with the ATCC under the designation DNA66667 on September 22, 1998 and has been assigned ATCC deposit number 203267 EXAMPLE 19 Isolation of cDNA Clones Encoding Human PROl 375 A Merck/Wash U database was searched and a Merck EST was identified This sequence was then put in a program which aligns it with other sequences from the Swiss-Prot public database, public EST databases (e g GenBank. Merck/Wash U ). and a proprietary EST database (LIFESEQ*", Incyte Pharmaceuticals. Palo Alto, CA) The search was performed using the computer program BLAST or BLAST2 [Altschul et al Methods in Enzymology. 266 460-480 ( 1996)] as a comparison of the extracellular domain (ECD) protein sequences to a 6 frame translation of the EST sequences Those comparisons resulting in a BLAST score of 70 (or in some cases. 90) or greater that did not encode knoyv n proteins were clustered and assembled into consensus DNA sequences with the program "phrap" (Phil Green, University of Washington, Seattle, Washington) A consensus DNA sequence was assembled relative to other EST sequences using phrap This consensus sequence is designated herein "DNA67003 ' Based on theDNA67003 consensus sequence, a nucleic acid was identified in a human pancreas library DNA sequencing of the clone gave the full-length DNA67004- 1614 sequence and the derived protein sequence for PROl 375 The entire coding sequence ofPRO 1375 is shown in Figure 31 (SEQ ID NO 31 ) Clone DNA67004-1614 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 104-106, and an apparent stop codon at nucleotide positions 698-700 The predicted polypeptide precursor is 198 amino acids long and is shown in Figure 32 (SEQ ID NO 32) The transmembrane domains are at about am o acids 1 1 -28 (type II) and 103-125, an N-glycosylation site is at about amino acids 60-64, a tyrosine kinase phosphorylation site is at about amino acids 78-86, and an N-myπstoylation site is at about amino acids 12-18 Clone DNA67004-1614 has been deposited with ATCC on August 1 1 , 1998 and is assigned ATCC deposit no 203115 The full-length PRO 1375 protein shown in Figure 32 has an estimated molecular weight of about 22,531 daltons and a pi of about 8 47 An analysis of the Dayhoff database (version 35 45 SwissProt 35), using a WU-BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 32, revealed sequence identity between the PR01375 amino acid sequence and the following Dayhoff sequences AF026198_5, CELR12C12_5, S73465, Y01 1_MYCPN, S64538 , P_P8150, MUVSHPO10 , VSH_MUMPL and CVU59751_5 EXAMPLE 20 Isolation of cDNA Clones Encoding Human PROl 410 DNA68874-1622 was identified by applying the proprietary signal sequence finding algorithm described in Example 3 above Use of the above described signal sequence algorithm allowed identification of an ESTcluster sequence from the LIFESEQ ® database, designated Incyte EST cluster sequence no 98502 This EST cluster sequence was then compared to a variety of expressed sequence tag (EST) databases which included public EST databases (e g , GenBank) and a proprietary EST DNA database (LIFESEQ ® , Incyte Pharmaceuticals, Palo Alto. CA) to identity existing homologies The homology search was performed using the computer progiam BLAST or BLAST2 (Altshul et al , Methods in Enzymology. 266 460-480 (1996)) Those comparisons resulting in a BLAST score of 70 (or in some cases, 90) or greater that did not encode known proteins were clustered and assembled into a consensus DNA sequence with the program "phrap" (Phil Green, University of Washington, Seattle, Washington) The consensus sequence obtained therefrom is herein designated as DNA56451 In light of the sequence homology between the DNA56451 sequence and the Incyte EST clone no 1257046, the Incyte EST clone no 1257046 was purchased and the cDNA insert was obtained and sequenced The sequence of this cDNA insert is shoyyn in Figure 33 (SEQ ID NO 33) and is herein designated as DNA68874-1622 Clone DNA68874-1622 contains a single open reading frame yv ith an apparent translational initiation site at nucleotide positions 152-154 and ending at the stop codon at nucleotide positions 866-868 (Figure 33) The predicted polypeptide precursor is 238 amino acids long (Figure 34, SEQ ID NO 34) The full-length PRO1410 protein shown in Figure 34 has an estimated molecular weight ot about 25.262 daltons and a pi of about 6 44 Analysis ot the full-length PROl 410 sequence shown in Figure 34 (SEQ ID NO 34) evidences the presence ot a variety of important polypeptide domains, wherein the locations given for those important polypeptide domains are approximate as described above Analysis of the full-length PRO 1410 sequence shown in Figure 34 evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 20 a transmembrane domain from about am o acid 194 to about amino acid 220, a potential N-glycosylation site from about amino acid 132 to about amino acid 136, and N-myπstoylation sites from about amino acid 121 to about amino acid 127, from about amino acid 142 to about amino acid 148, from about amino acid 171 to about amino acid 177, from about amino acid 201 to about amino acid 207, and from about amino acid 203 to about amino acid 209 Clone DNA68874-1622 has been deposited with ATCC on September 22, 1998 and is assigned ATCC deposit no 203277 An analysis of the Dayhoff database (version 35 45 SwissProt 35), using a WU-BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 34 (SEQ ID NO 34), evidenced significant homology between the PROl 410 amino acid sequence and the following Dayhoff sequences 148652, P_R76466, HSMHC3W36A_2, EPB4_HUMAN, P_R14256, EPA8_MOUSE, P_R77285, P_W13569, AF000560_1 , and ASF1_HELAN EXAMPLE 21 Isolation ot cDNA Clones Encoding Human PRO 1488 An expressed sequence tag (EST) DNA database (LIFESEQ0 Incyte Pharmaceuticals. Palo Alto, CA) was searched and EST No 36391 12H1 was identified as having homology to CPE-R EST No 3639112H1 is designated herein as "DNA69562" EST clone 36391 12H1 , which was derived from a lung tissue library ot a 20-week old fetus who died from Patau's syndrome, was purchased and the cDNA insert was obtained and sequenced in its entirety The entire nucleotide sequence of PRO 1488 is shown in Figure 35 (SEQ ID NO 35), and is designated herein as DNA73736- 1657 DNA73736-1657 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 6-8 and a stop codon at nucleotide positions 666-668 (Figure 35, SEQ ID NO 35) The predicted polypeptide precursor is 220 amino acids long The full-length PROl 488 protein shown in Figure 36 has an estimated molecular weight of about 23,292 daltons and a pi of about 8 43 Four transmembrane domains have been identified as being located at about amino acid positions 8-30, 82- 102, 121 - 140, and 166- 186 N-myπstoylation sites are at about amino acid positions 10-16, 21-27, 49-55, 60-66, 101-107, 178-184, and 179-185 An analysis of the Dayhoff database (version 35 45 SwissProt 35), using a WU-BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 36 (SEQ ID NO 36) rey ealed significant homology between the PRO 1488 amino acid sequence and Dayhoff sequence ABO00712_l Homology was also found between the PRO 1488 amino acid sequence and the folloyving additional Dayhoff sequences AB000714_1 , AF007189 AF0O0959_l , P_W63697 MMU82758_1 , AF072127J , AF072128 HSU89916J , AF068863_1, CEAF000418_ 1 , and AF077739_ 1 Clone DNA73736 1657 was deposited with the ATCC on Nov ember 17 1998 and is assigned ATCC deposit no 203466 EXAMPLE 22 Isolation ot cDNA Clones Encoding Human PRQ3438 DNA82364-2538 was identified by applying the proprietary signal sequence finding algorithm described in Example 3 above Use of the above described signal sequence algorithm allowed identification of an EST sequence from the LIFESEQ ® database, designated Incyte EST187233H 1 This EST sequence was then compared to a variety of expressed sequence tag (EST) databases which included public EST databases (e g , GenBank) and a proprietary EST DNA database (LIFESEQ ® , Incyte Pharmaceuticals Palo Alto CA) to identify existing homologies The homology search was performed using the computer program BLAST or BLAST2 ( Altshul etal , Methods in Enzymology. 266 460-480 ( 1996)) Those comparisons resulting in a BLAST score of 70 (or in some cases, 90) or greater that did not encode known proteins were clustered and assembled into a consensus DNA sequence with the program "phrap" (Phil Green, University of Washington, Seattle, Washington) The consensus sequence obtained therefrom is herein designated as DNA73888 In light of the sequence homology between the DNA73888 consensus sequence and the Incyte EST187233H 1 , the clone including this EST was purchased and the cDNA insert was obtained and sequenced The sequence of this cDNA insert is shown in Figure 37 (SEQ ID NO 37) and is herein designated as DNA82364-2538 Clone DNA82364-2538 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 50-52 and ending at the stop codon at nucleotide positions 647-649 (Figure 37) The predicted polypeptide precursor is 199 amino acids long (Figure 38, SEQ ID NO 38) The full-length PR03438 protein shown in Figure 38 has an estimated molecular weight of about 21 ,323 daltons and a pi of about 5 05 Analysis of the full-length PR03438 sequence shown in Figure 38 (SEQ ID NO 38) evidences the presence of a variety of important polypeptide domains, wherein the locations given for those important polypeptide domains are approximate as described above Analysis of the full length PR03438 sequence shown in Figure 38 evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 15, a transmembrane domain from about amino acid 161 to about amino acid 181 , N-myπstoylation sites from about ammo acid 17 to about amino acid 23 and from about ammo acid 172 to about amino acid 178, and an amidation site from about amino acid 73 to about amino acid 79 Clone DNA82364 2538 has been deposited with ATCC on January 20 1999 and is assigned ATCC deposit no 203603 An analysis of the Dayhoff database (version 35 45 SwissProt 35), using a WU-BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 38 (SEQ ID NO 38), evidenced homology between the PR03438 amino acid sequence and the following Dayhoff sequences S48841 , P_W03179, P_W03178, PIGR_HUMAN. HGS_A215. AB001489 . HGS_B471 , P_W61380 P_R15068 and MML1L_1 EXAMPLE 23 Isolation ot cDNA Clones Encoding Human PRO4302 Use of the amylase screen procedure described above in Example 2 on tissue isolated from human tissue resulted in an EST sequence which was then compared against various EST databases to create a consensus sequence by a methodology as described above under the amylase yeast screen procedure and/or the ECD homology procedure The consensus sequence obtained therefrom is herein designated DNA78875 Based upon an observed homology between the DNA78875 consensus sequence and the Incyte EST no 2408081 HI , Incyte EST no 2408081 H I was purchased and its insert obtained and sequenced The sequence of this cDNA insert is shown in Figure 39 (SEQ ID NO 39) and is herein designated as DNA92218-2554 and the derived PRO4302 full-length native sequence protein (SEQ ID NO 40) The full length clone DNA92218-2554 (SEQ ID NO 39) shown in Figure 39 has a single open reading frame with an apparent translational initiation site at nucleotide positions 174-176 and a stop signal (TAG) at nucleotide positions 768-770, as indicated by bolded underline The predicted PRO4302 polypeptide precursor is 198 amino acids long, and has a calculated molecular weight ot approximately 22,285 daltons and an estimated pi of approximately 9 35 Analysis of the full-length PRO4302 sequence shown in Figure 40 (SEQ ID NO 40) reveals a signal peptide from about amino acid residue 1 to about amino acid residue 23, a transmembrane domain from about amino acid residue 1 1 1 to about amino acid residue 130, a cAMP- and cGMP-dependent protein kinase phosphorylation site at amino acid residues 26-30, a tyrosine kinase phosphorylation site at amino acid residues 36-44, and N-myπstoylation sites at amino acid residues 124-130, 144-150 and 189-195 A cDNA clone containing DNA92218-2554 was deposited with the ATCC on March 9, 1999 and has been assigned deposit number 203834 EXAMPLE 24 Isolation of cDNA Clones Encoding Human PRO4400 A consensus DNA sequence was assembled relative to other EST sequences using phrap as described in Example 1 above The EST databases included public EST databases (e g , GenBank), and a proprietary EST database (LIFESEQ ® , Incyte Pharmaceuticals, Palo Alto, CA) and proprietary ESTs from Genentech This consensus sequence is designated herein as DNA77634 Based on the DNA77634 consensus sequence, oligonucleotides were synthesized 1 ) to identify by PCR a cDNA library that contained the sequence of interest, and 2) for use as probes to isolate a clone of the full-length coding sequence for PRO4400 A pair of PCR primers (forward and reverse) were synthesized forward PCR primer 5 -GCTGCTGCCGTCCATGCTGATG-3' (SEQ ID NO 81 ) reverse PCR primer 5'-CTCGGGGAATGTGACATCGTCGC-3' (SEQ ID NO 82) Additionally, a synthetic oligonucleotide hybridization probe was constructed from the consensus DNA77634 sequence which had the following nucleotide sequence hybridization probe 5'-GCTGCCGTCCATGCTGATGTTTGCGGTGATCGTGG-3' (SEQ ID NO 83) RNA for construction of the cDNA libraries was isolated from a human adenocarcinoma cell line The cDNA libraries used to isolate the cDNA clones were constructed by standard methods using commercially available reagents such as those from Inv ltrogen, San Diego CA The cDNA was primed with ohgo dT containing a Notl site, linked with blunt to Sail hemikinased adaptors, cleaved with Notl, sized appropriately by gel electrophoresis, and cloned in a defined orientation into a suitable cloning vector (such as pRKB or pRKD, pRK5B is a precursor of pRK5D that does not contain the Sfil site, see. Holmes et al , Science, 253 1278-1280 ( 1991 )) in the unique Xhol and Notl sites DNA sequencing of the clones isolated as described above gave the full-length DNA sequence for the PRO4400 polypeptide (designated herein as DNA87974-2609 [Figure 41. SEQ ID NO 41 ]) and the derived protein sequence for that PRO4400 polypeptide The entire coding sequence of DNA87974-2609 is included in Figure 41 (SEQ ID NO 41 ) Clone DNA87974-2609 contains a single open reading frame with an apparent translational initiation site at nucleotide positions 27-29, and an apparent stop codon at nucleotide positions 1026-1028 The predicted polypeptide precursor is 333 amino acids long, and has an estimated molecular weight of about 38,618 daltons and a pi of about 9 27 Analysis of the full-length PRO4400 sequence shown in Figure 42 (SEQ ID NO 42) evidences the presence of a variety of important polypeptide domains, wherein the locations given for those important polypeptide domains are approximate as described above Analysis of the full-length PRO4400 polypeptide shown in Figure 42 evidences the presence of the following a signal peptide from about amino acid 1 to about amino acid 23, N- gylcosylation sites from about amino acid 67 to about amino acid 71 and from about amino acid 325 to about amino acid 329, tyrosine kinase phosphorylation sites from about amino acid 152 to about amino acid 159 and at about amino acid 183, and N-myπstoylation sites from about amino acid 89 to about amino acid 95, and from about amino acid 128 to about amino acid 134 Clone DNA87974-2609 has been deposited with the ATCC on April 27, 1999 and is assigned ATCC deposit no 203963 An analysis ot the Dayhoff database (version 35 45 SwissProt 35), using a WU-BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 42 (SEQ ID NO 42), evidenced significant homology between the PRO4400 amino acid sequence and the following Dayhoff sequences AF033827_1 , AF070594J , AF022729_1 , CEC34F6_4. SYFB_THETΗ, G70405, SD_DROME, S64023, ALKl_YEAST and VG04_HSVII EXAMPLE 25 Isolation of cDNA Clones Encoding Human PRQ5725 An expressed sequence tag (EST) DNA database (LIFESEQ ® , Incyte Pharmaceuticals, Palo Alto, CA) was searched and an EST was identified which showed homology to Neuπtin Incyte ESTclone no 3705684 was then purchased from LIFESEQ ® , Incyte Pharmaceuticals, Palo Alto, CA and the cDNA insert of that clone designated herein as DNA92265-2669 was obtained and sequenced in entirety [Figure 43, SEQ ID NO'43] The full length clone DNA92265-2669 (SEQ ID NO 43) contains a single open reading frame with an apparent translational initiation site at nucleotide positions 27-29 and a stop signal at nucleotide positions 522-524 (Figure 43, SEQ ID NO 43) The predicted polypeptide precursor is 165 amino acids long and has a calculated molecular weight of approximately 17 786 daltons and an estimated pi of approximately 8 43 Analysis of the full-length PR05725 sequence shown in Figure 44 (SEQ ID NO 44) evidences the presence of a variety of important polypeptide domains as shown in Figure 44, wherein the locations given tor those important polypeptide domains are approximate as described above Analysis of the full-length PR05725 polypeptide shown in Figure 44 evidences the presence of the following a signal sequence from about amino acid 1 to about amino acid 35, a transmembrane domain from about amino acid 141 to about amino acid 157, an N-myπstoylation site from about amino acid 127 to about amino acid 133, and a prokaryotic membrane lipoprotein lipid attachment site from about amino acid 77 to about amino acid 88 Clone DNA92265-2669 has been deposited with ATCC on June 22, 1999 and is assigned ATCC deposit no PTA-256 An analysis of the Dayhoff database (version 35 45 SwissProt 35) using a WU-BLAST2 sequence alignment analysis of the full-length sequence shown in Figure 44 (SEQ ID NO 44), evidenced sequence identity between the PR05725 amino acid sequence and the following Dayhoff sequences RNU88958_1 , P_W37859 P_W37858, JC6305 HGS_RE778 HGS_RE777, P_W27652, P_W44088, HGS_RE776, and HGS_RE425 EXAMPLE 26 In situ Hybridization In situ hybridization is a powerful and versatile technique for the detection and localization of nucleic acid sequences within cell or tissue preparations It may be useful, for example, to identify sites of gene expression, analyze the tissue distribution of transcription, identify and localize viral infection, follow changes in specific mRNA synthesis, and aid in chromosome mapping In situ hybridization was performed following an optimized version of the protocol by Lu and Gillett, Cell Vision, 1 169 176 (1994), using PCR-generated "P labeled πboprobes Briefly, formalin-fixed, paraffin-embedded human tissues were sectioned, deparaffinized, deprotemated in proteinase K (20 g/ml) for 15 minutes at 37 °C, and further processed for in situ hybridization as described by Lu and Gillett, supia A ("-P)UTP-labeled antisense πboprobe was generated from a PCR product and hybridized at 55 °C overnight The slides were dipped in Kodak NTB2™ nuclear track emulsion and exposed for 4 weeks — P-Riboprobe synthesis 6 0 μl ( 125 mCi) of "P-UTP ( Amersham BF 1002, S A<2000 Ci/mmol ) were speed- vacuum dried To each tube containing dried "P-UTP, the following ingredients were added 2 0 μl 5x transcription buffer 1 O μl DTT (l OO mM) 2 0 μl NTP mix (2 5 mM 10 μl each of 10 M GTP, CTP & ATP + 10 l H 2 O) 1 0 μl UTP (50 μM) 1 0 μl RNAsin 1 0 μl DNA template (1 μg) 1 0 μl H 2 0 1 0 μl RNA polymerase (tor PCR products T3 = AS, T7 = S. usually ) The tubes were incubated at 37°C for one hour A total of 1 0 μl RQ1 DNase was added, followed by incubation at 37 °C for 15 minutes A total of 90 μl TE ( 10 mM Tπs pH 7 6/1 mM EDTA pH 8 0) was added, and the mixture was pipetted onto DE81 paper The remaining solution was loaded in a MICROCON-50™ ultrafiltration unit and spun using program 10 (6 minutes) The filtration unit was inverted over a second tube and spun using program 2 (3 minutes) After the final recovery spin, a total of 100 μl TE was added, then 1 μl of the final product was pipetted on DE81 paper and counted in 6 ml of BIOFLUOR II™ The probe was run on a TBE/urea gel A total of 1 -3 μl ot the probe or 5 μl of RNA Mrk III was added to 3 μl of loading buffer After heating on a 95 °C heat block for three minutes the gel was immediately placed on ice The wells of gel were flushed, and the sample was loaded and run at 180-250 volts for 45 minutes The gel was wrapped in plastic wrap (SARAN™ brand) and exposed to XAR film w ith an intensifying screen in a -70 C C freezer one hour to overnight -P-Hvbπdιzatιon A Pretreatment of frozen section 1 , The slides were removed from the freezer, placed on aluminum trays, and thawed at room temperature for 5 minutes The trays were placed in a 55 °C incubator for five minutes to reduce condensation The slides were fixed for 10 minutes in 4% paraformaldehyde on ice in the fume hood, and washed in 0 5 x SSC for 5 minutes, at room temperature (25 ml 20 x SSC + 975 ml SQ H 2 0) After deproteination in 0 5 μg/ml proteinase K for 10 minutes at 37 °C (12 5 μl of 10 mg/ml stock in 250 ml prewarmed RNAse-tree RNAse buffer), the sections were washed in 0 5 x SSC for 10 minutes at room temperature The sections were dehydrated in 70%, 95%, and 100% ethanol, 2 minutes each B Pretreatment of paraffin-embedded sections The slides were deparaffinized, placed in SQ H 2 0, and rinsed twice in 2 x SSC at room temperature, for 5 minutes each time The sections were deprotemated in 20 μg/ml proteinase K (500 μl of 10 mg/ml in 250 ml RNase-free RNase buffer, 37 °C, 15 minutes) for human embryo tissue, or 8 x proteinase K ( 100 μl in 250 ml Rnase buffer, 37 °C, 30 minutes) for formalin tissues Subsequent rinsing in 0 5 x SSC and dehydration were performed as described above C Prehybridization The slides were laid out in a plastic box lined with Box buffer (4 x SSC.50% formamide) - saturated filter paper. The tissue was covered with 50 μl of hybridization buffer (3 75 g dextran sulfate + 6 ml SQ H 2 0). vortexed, and heated in the microwave for 2 minutes with the cap loosened After cooling on ice, 18 75 ml formamide, 3 75 ml 20 x SSC. and 9 ml SQ H 2 0 were added, and the tissue was vortexed well and incubated at 42 °C for 1 -4 hours D Hybridization 1 0 x 10 6 cpm probe and 1 0 μl tRNA (50 mg/ml stock) per slide were heated at 95 °C for 3 minutes The slides were cooled on ice, and 48 μl hybridization buffer was added per slide After vortexmg, 50 μl 13 P mix was added to 50 μl prehybridization on the slide The slides were incubated overnight at 55 °C E Washes Washing was done for 2x 10 minutes w ith 2xSSC EDTA at room temperature (400 ml 20 x SSC + 16 ml 0 25 M EDTA V,=4L) followed by RNAseA treatment at 37 °C for 30 minutes (500 μl of 10 mg/ml in 250 ml Rnase buffer = 20 μg/ml), The slides w ere washed 2 x 10 minutes with 2 x SSC EDTA at room temperature The stringency wash conditions were as follows 2 hours at 55 °C 0 1 x SSC, EDTA (20 ml 20 x SSC + 16 ml EDTA, Vf=4L) F Oligonucleotides In situ analysis was performed on four of the DNA sequences disclosed herein The oligonucleotides employed for these analyses are as follows (1 ) DNA34387-1 138 (PRO240) (Jagged/EGF homolog) Ohgo B-231 W 48mer 5'-GGATTCTAATACGACTCACTATAGGGCCCGAGATATGCACCCAATGTC-3 (SEQ ID NO 84) Ohgo B-231 -X 47mer 5'-CTATGAAATTAACCCTCACTAAAGGGATCCCAGAATCCCGAAGAACA-3 (SEQ ID NO 85) (2) DNA57708-141 1 (PR01005) (Novel secreted CA associated protein) 678 pi 5'-GGA TTC TAA TAC GAC TCA CTA TAG GGC CCT CTG TCC ACT GCT TTC GTG 3' (SEQ ID NO 86) 678 p2 5'-CTA TGA AAT TAA CCC TCA CTA AAG GGA GTT CTC CAC CGT GTC TCC ACA-3' (SEQ ID NO 87) (3) DNA60764 1533 (PRQ1265) (Fιg-1 Homolog) DNA60764-pl 5'-GGA TTC TAA TAC GAC TCA CTA TAG GGC CGC GCT GTC CTG CTG TCA CCA-3' (SEQ ID NO 88) DNA60764-p2 5'-CTA TGA AAT TAA CCC TCA CTA AAG GGA GTT CCC CTC CCC GAG AAG ATA-3 (SEQ ID NO 89) (4) DNA28498 (PRQ183) (FHF-2) DNA28498-pl 5'-GGA TTC TAA TAC GAC TCA CTA TAG GGC CAG CAA AAG AAG CGG TGG TG 3' (SEQ ID NO 90) DNA28498-p2 5'-CTA TGA AAT TAA CCC TCA CTA AAG GGA TTC AGC ACG CCA GAG ACA CTT-3' (SEQ ID NO 91 ) G Results In situ analysis was performed on the above four DNA sequences disclosed herein The results from these analysis are as follows (1) DNA34387-1 138 (PRO240) (Jagged/EGF Homolog) Expiession pattern in human adult and fetal tissues Elevated signal was observed at the following sites Fetal tissues thyroid epithelium small intestinal epithelium, gonad pancreatic epithelium hepatocytes in liver and renal tubules, expression was also seen in vascular tissue in developing bones Adult tissues moderate signal in placental cytotrophoblast renal tubular epithelium bladder epithelium parathyroid and epithelial tumors Expression in lung adenocarcinoma and squamous carcinoma Expression was observed in all eight squamous carcinomas and in six out of eight adenocarcmomas Expression was seen in in situ and infiltrating components Expression levels were low to moderate in the adenocarcmomas In general, expression was higher in the squamous carcinomas and in two of these the expression was strong No expression was seen in the tumor stroma alveoli or normal respiratory epithelium There was possible low level expression in lymph nodes (2) DNA57708-141 1 (PRO 1005) (Novel secreted CA associated protein) Extremely strong expression was seen over mucus neck cells ot gastric f undal (chimp) and antral (human) mucosa These cells are important in proliferation and mucosal i egeneration in the stomach Focal expression was also seen over fetal hepatocytes and adult hepatocytes at the edge of cirrhotic nodules Possible expression appeared over skeletal muscle of fetal extra-ocular muscles and the lower limb No significant expression was observed in any of the 16 primary lung carcinomas (eight squamous and eight adenocarcmomas) that were examined (3) DNA60764-1533 (PROl 265) (Fιg-1 Homolog) Fifteen of the sixteen lung tumors examined were suitable for analysis (eight adeno and seven squamous carcinomas) Most of the tumors showed some expression of DNA60764 Expression was largely confined to mononuclear cells adjacent to the infiltrating tumor In one squamous carcinoma, expression was seen by the malignant epithelium Expression was also seen over cells in the fetal thymic medulla of uncertain histogenesis Expression was seen over mononuclear cells in damaged renal interstitium and in interstitial cells in a renal cell carcinoma Expression was also seen over cells in a germinal center, consistent with the fact that most Fιg-1 positive cells are probably inflammatory in origin (4) DNA28498 (PRQ183) (FHF-2) Expression was observed over the inner aspect of the fetal retina Strong expression was seen over spinal ganglia and over neurones in the anteπor horns of the spinal cord of the human fetus While significant expression was not observed in the human fetal brain, high expression was seen over neurones in rhesus monkey brain, including the hippocampal neurones Expression was also observed in the spinal cord and developing hindbrain of the rat embryo EXAMPLE 27 Use of PRO as a Hybridization Probe The following method describes use of a nucleotide sequence encoding PRO as a hybridization probe DNA comprising the coding sequence ot full-length or mature PRO as disclosed herein or a fragment thereof is employed as a probe to screen for homologous DNAs (such as those encoding naturally-occurring variants of PRO) in human tissue cDNA libraries or human tissue genomic libraries Hybridization and washing of filters containing either library DNAs is performed under the following high- stringency conditions Hybridization of radiolabeled probe derived from the gene encoding a PRO polypeptide to the filters is performed in a solution of 50% formamide, 5x SSC. 0 1 % SDS, 0 1 % sodium pyrophosphate, 50 mM sodium phosphate, pH 6 8, 2x Denhardt's solution, and 10% dextran sulfate at 42"C for 20 hours Washing of the filters is performed in an aqueous solution of 0 1 x SSC and 0 1 % SDS at 42°C DNAs having a desired sequence identity with the DNA encoding full-length native sequence PRO can then be identified using standard techniques known in the art EXAMPLE 28 Expression of PRO in £ coli This example illustrates preparation of an unglycosylated form of PRO by recombinant expression in £ The DNA sequence encoding PRO is initially amplified using selected PCR primers The primers should contain restriction enzyme sites which correspond to the restriction enzyme sites on the selected expression vector A variety of expression vectors may be employed An example of a suitable vector is pBR322 (derived from£ coli, see, Bolivar et al , Gene. 2 95 (1977)) which contains genes for ampicilhn and tetracychne resistance The vector is digested with restriction enzyme and dephosphorylated The PCR amplified sequences are then ligated into the vector The vector will preferably include sequences which encode for an antibiotic resistance gene, a trp promoter, a poly-His leader (including the first six STLl codons, poly-His sequence, and enterokinase cleavage site), the PRO coding region, lambda transcriptional terminator, and an argU gene The ligation mixture is then used to transform a selected £ coli strain using the methods described in Sambrook et al , supra Transformants are identified by their ability to grow on LB plates and antibiotic resistant colonies are then selected Plasmid DNA can be isolated and confirmed by restriction analysis and DNA sequencing Selected clones can be grown overnight in liquid culture medium such as LB broth supplemented with antibiotics The overnight culture may subsequently be used to inoculate a larger scale culture The cells are then grown to a desired optical density, during which the expression promoter is turned on After culturing the cells for several more hours, the cells can be harvested by centπf ugation The cell pellet obtained by the centπfugation can be solubihzed using various agents known in the art, and the solubilized PRO protein can then be purified using a metal chelatmg column under conditions that allow tight binding of the protein PRO may be expressed in £ coli in a poly-His tagged form, using the following procedure The DNA encoding PRO is initially amplified using selected PCR primers The primers will contain restriction enzyme sites which correspond to the restriction enzyme sites on the selected expression v ector and other useful sequences providing for efficient and reliable translation initiation, rapid purification on a metal chelation column and proteolytic removal with enterokinase The PCR amplified poly-His tagged sequences are then ligated into an expression vector, which is used to transform an £ coli host based on strain 52 (W31 10 fuhA(tonA) Ion galE rpoHts(htpRts) clpP(lacIq) Transformants are first grown in LB containing 50 mg/ml carbenicilhn at 30°C with shaking until an of 3-5 is reached Cultures are then diluted 50-100 fold into CRAP media (prepared by mixing 3 57 g (NH ),S0 4 , 0 71 g sodium cιtrate « 2H,0, 1 07 g KCl 5 36 g Difco yeast extract, 5 36 g Sheffield hycase SF in 500 ml water, as well as 1 10 mM MPOS, pH 7 3, 0 55%) (w/v) glucose and 7 mM MgS0 4 ) and grown for approximately 20 30 hours at 30 °C with shaking Samples are removed to verify expression bv SDS-PAGE analysis, and the bulk culture is centrifuged to pellet the cells Cell pellets are frozen until purification and refolding £ coli paste from 0 5 to 1 L fermentations (6- 10 g pellets) is resuspended in 10 volumes (w/v ) in 7 M guanidine, 20 mM Tπs, pH 8 buffer Solid sodium sulfite and sodium tetrathionate is added to make final concentrations of 0 1 M and 0 02 M, respectively, and the solution is stirred overnight at 4°C This step results in a denatured protein with all cysteine residues blocked by suit itolization The solution is centrifuged at 40 000 in a Beckman Ultracentifuge for 30 min The supernatant is diluted with 3-5 volumes of metal chelate column buffer (6 M guanidine, 20 mM Tπs, pH 7 4) and filtered through 0 22 micron filters to clarify The clarified extract is loaded onto a 5 ml Qiagen Ni 2+ -NTA metal chelate column equilibrated in the metal chelate column buffer The column is washed with additional buffer containing 50 mM imidazole (Calbiochem, Utrol grade), pH 7 4 The protein is eluted with buffer containing 250 mM imidazole Fractions containing the desired protein are pooled and stored at 4°C Protein concentration is estimated by its absorbance at 280 nm using the calculated extinction coefficient based on its amino acid sequence The proteins are refolded by diluting the sample slowly into freshly prepared refolding buffer consisting of 20 mM Tπs, pH 8 6, 0 3 M NaCl, 2 5 M urea, 5 mM cysteine, 20 mM glycine and 1 mM EDTA Refolding volumes are chosen so that the final protein concentration is between 50 to 100 micrograms/ml The refolding solution is stirred gently at 4°C for 12-36 hours The refolding reaction is quenched by the addition of TFA to a final concentration of 04% (pH of approximately 3) Before further purification of the protein, the solution is filtered through a 0 22 micron filter and acetonitrile is added to 2-10% final concentration The refolded protein is chromatographed on a Poros R 1/H reversed phase column using a mobile buffer of 0 1 % TFA with elution with a gradient of acetonitrile from 10 to 80% Aliquots of fractions with A 2S „ absorbance are analyzed on SDS polyacrylamide gels and fractions containing homogeneous refolded protein are pooled Generally, the properly refolded species of most proteins are eluted at the lowest concentrations of acetonitrile since those species are the most compact with their hydrophobic interiors shielded from interaction with the reversed phase resin Aggregated species are usually eluted at higher acetonitrile concentrations In addition to resolving mistolded forms of proteins from the desired form, the reversed phase step also removes endotoxm from the samples Fractions containing the desired folded PRO polypeptide are pooled and the acetonitrile removed using a gentle stream of nitrogen directed at the solution Proteins are formulated into 20 mM Hepes, pH 6 8 with 0 14 M sodium chloride and 4% mannitol by dialysis or by gel filtration using G25 Superfine (Pharmacia) resins equilibrated in the formulation buffer and sterile filtered Many ot the PRO polypeptides disclosed herein were successfully expressed as descibed above EXAMPLE 29 Expression of PRO in mammalian cells This example illustrates preparation of a potentially glvcosylated lor of PRO by recombinant expression in mammalian cells The vector, pRK5 (see EP 307,247, published March 15, 1989), is employed as the expression vector Optionally, the PRO DNA is ligated into pRK5 with selected restriction enzymes to allow insertion of the PRO DNA using ligation methods such as described in Sambrook et al , supta The resulting vector is called pRK5- PRO In one embodiment, the selected host cells may be 293 cells Human 293 cells (ATCC CCL 1573) are grown to confluence in tissue culture plates in medium such as DMEM supplemented with fetal calf serum and optionally, nutrient components and or antibiotics About 10 μg pRK5-PRO DNA is mixed with about 1 μg DNA encoding the VA RNA gene [Thimmappaya et al , CeJJ, 3J_ 543 ( 1982)] and dissolved in 500 μl of 1 mM Tπs-HCl, 0 1 mM EDTA, 0 227 M CaCl, To this mixture is added, dropwise, 500 μl of 50 mM HEPES (pH 7 35), 280 mM NaCl, 1 5 mM NaP0 4 , and a precipitate is allowed to form tor 10 minutes at 25 °C The precipitate is suspended and added to the 293 cells and allowed to settle for about four hours at 37"C The culture medium is aspirated off and 2 ml of 20% glycerol in PBS is added for 30 seconds The 293 cells are then washed with serum free medium, fresh medium is added and the cells are incubated for about 5 days Approximately 24 hours after the transfections, the culture medium is removed and replaced with culture medium (alone) or culture medium containing 200 μCi/ml "S-cysteine and 200 μG/ml After a 12 hour incubation, the conditioned medium is collected, concentrated on a spin filter, and loaded onto a 15% SDS gel The processed gel may be dried and exposed to film for a selected period of time to reveal the presence of the PRO polypeptide The cultures containing transfected cells may undergo further incubation (in serum free medium) and the medium is tested in selected bioassays In an alternative technique, PRO may be introduced into 293 cells transiently using the dextran sulfate method described by Somparyrac et al , Proc Natl Acad Sci , 12 7575 (1981 ) 293 cells are grown to maximal density in a spinner flask and 700 μg pRK5-PRO DNA is added The cells are first concentrated from the spinner flask by centπfugation and washed with PBS The DNA-dextran precipitate is incubated on the cell pellet for four hours The cells are treated with 20% glycerol for 90 seconds, washed with tissue culture medium, and re- mtroduced into the spinner flask containing tissue culture medium, 5 μg/ml bovine insulin and 0 1 μg/ml bovine transferrin After about four days, the conditioned media is centrifuged and filtered to remove cells and debris The sample containing expressed PRO can then be concentrated and purified by any selected method such as dialysis and/or column chromatography In another embodiment, PRO can be expressed in CHO cells The pRK5-PRO can be transfected into CHO cells using known reagents such as CaP0 or DEAE-dextran As described above, the cell cultures can be incubated, and the medium replaced with culture medium (alone) or medium containing a radiolabel such as 35 S- methionine After determining the presence of a PRO polypeptide, the culture medium may be replaced with serum tree medium Preferably, the cultures are incubated tor about 6 days and then the conditioned medium is harvested The medium containing the expressed PRO polypeptide can then be concentrated and purified by any selected method Epitope tagged PRO may also be expressed in host CHO cells The PRO may be subcloned out of the pRK5 vector The subclone insert can undergo PCR to fuse in frame with a selected epitope tag such as a poly-His tag into a Baculovirus expression vector The poly-His tagged PRO insert can then be subcloned into a SV40 driven vector containing a selection marker such as DHFR for selection ot stable clones Finally, the CHO cells can be transfected (as described above) with the SV40 driven vector Labeling may be performed as described above to verify expression The culture medium containing the expressed poly-His tagged PRO can then be concentrated and purified by any selected method, such as by Nf + -chelate affinity chromatography PRO may also be expressed in CHO and/or COS cells by a transient expression procedure or in CHO cells by another stable expression procedure Stable expression in CHO cells is performed using the following procedure The proteins are expressed as an IgG construct (immunoadhesm) in which the coding sequences tor the soluble forms (e g , extracellular domains) of the respective proteins are fused to an IgG l constant region sequence containing the hinge, CH2 and CH2 domains and/or as a poly-His tagged form Following PCR amplification, the respective DNAs are subcloned in a CHO expression vector using standard techniques as descπbed in Ausubel et al , Current Protocols of Molecular Biology. Unit 3 16, John Wiley and Sons ( 1997) CHO expression vectors are constructed to have compatible restriction sites 5 and 3 of the DNA of interest to allow the convenient shuttling of cDNA' s The vector used in expression in CHO cells is as described in Lucas et al , Nucl Acids Res . 24 9 (1774-1779 (1996), and uses the SV40 early promoter/enhancer to drive expression of the cDNA of interest and dihydrofolate reductase (DHFR) DHFR expression permits selection for stable maintenance of the plasmid following transfection Twelve micrograms of the desired plasmid DNA is introduced into approximately 10 million CHO cells using commercially available transfection reagents Supertect ® (Qiagen), Dosper* or Fugene ® (Boehπnger Mannheim) The cells are grown as described in Lucas et al , supta Approximately 3 x 10 7 cells are frozen in an ampule for further growth and production as described below The ampules containing the plasmid DNA are thawed by placement into a water bath and mixed by vortexmg The contents are pipetted into a centrifuge tube containing 10 ml of media and centrifuged at 1000 φm for 5 minutes The supernatant is aspirated and the cells are resuspended in 10 ml of selective media (0 2 μm filtered PS20 with 5% 0 2 μm diafiltered fetal bovine serum) The cells are then ahquoted into a 100 ml spinner containing 90 ml of selective media After 1-2 days, the cells are transferred into a 250 ml spinner filled with 150 ml selective growth medium and incubated at 37"C After another 2-3 days, 250 ml, 500 ml and 2000 ml spinners are seeded with 3 x 10 " ' cells/ml The cell media is exchanged with fresh media by centrifugation and resuspension in production medium Although any suitable CHO media may be employed, a production medium described in U S Patent No 5, 122,469, issued June 16, 1992 may actually be used A 3L production spinner is seeded at 1 2 x 10 6 cells/ml On day 0, the cell number and pH is determined On day 1 , the spinner is sampled and sparging with filtered air is commenced On day 2 the spinner is sampled, the temperature shitted to 33' C. and 30 ml of 500 g/L glucose and 0 6 ml of 10% antifoam (e g . 35% polydimethylsiloxane emulsion Dow Corning 365 Medical Grade Emulsion) taken Throughout the production, the pH is adjusted as necessary to keep it at around 7 2 After 10 days, or until the viability drops below 70%, the cell culture is harvested by centrifugation and filtering through a 0 22 μm filter The filtrate is either stored at 4°C or immediately loaded onto columns for purification For the poly-His tagged constructs, the proteins are purified using a Ni + -NTA column (Qiagen) Before purification, imidazole is added to the conditioned media to a concentration of 5 mM The conditioned media is pumped onto a 6 ml Ni + -NTA column equilibrated in 20 mM Hepes, pH 7 4. buffer containing 0 3 M NaCl and 5 mM imidazole at a flow rate ot 4-5 ml/min at 4°C After loading, the column is washed with additional equilibration buffer and the protein eluted with equilibration buffer containing 0 25 M imidazole The highly purified protein is subsequently desalted into a storage buffer containing 10 mM Hepes 0 14 M NaCl and 4% mannitol, pH 6 8, with a 25 ml G25 Superfine (Pharmacia) column and stored at -80 'C Immunoadhesm (Fc-contaming) constructs are purified from the conditioned media as follows The conditioned medium is pumped onto a 5 ml Protein A column (Pharmacia) which has been equilibrated in 20 mM Na phosphate buffer, pH 6 8 After loading, the column is washed extensively with equilibration buffer before elution with 100 mM citric acid, pH 3 5 The eluted protein is immediately neutralized by collecting 1 ml fractions into tubes containing 275 μl of 1 M Tπs buffer, pH 9 The highly purified protein is subsequently desalted into storage buffer as described above for the poly-His tagged proteins The homogeneity is assessed by SDS polyacrylamide gels and by N-terminal amino acid sequencing by Edman degradation Many of the PRO polypeptides disclosed herein were successfully expressed as descibed above EXAMPLE 30 Expression of PRO in Yeast The following method describes recombinant expression of PRO in yeast First, yeast expression vectors are constructed for intracellular production or secretion of PRO from the ADH2/GAPDH promoter DNA encoding PRO and the promoter is inserted into suitable restriction enzyme sites in the selected plasmid to direct intracellular expression of PRO For secretion. DNA encoding PRO can be cloned into the selected plasmid, together with DNA encoding the ADH2/GAPDH promoter, a native PRO signal peptide or other mammalian signal peptide, or, for example, a yeast alpha-factor or invertase secretory signal/leader sequence, and linker sequences (if needed) for expression of PRO Yeast cells, such as yeast strain AB 1 10, can then be transformed with the expression plasmids described above and cultured in selected fermentation media The transformed yeast supernatants can be analyzed by precipitation with 10% trichloroacetic acid and separation by SDS-PAGE, followed by staining of the gels with Coomassie Blue stain Recombinant PRO can subsequently be isolated and purified by removing the yeast cells from the fermentation medium by centrifugation and then concentrating the medium using selected cartridge filters The concentrate containing PRO may further be purified using selected column chromatography resins Many of the PRO polypeptides disclosed herein were successfully expressed as described above EXAMPLE 31 Expression of PRO in Baculovirus-Intected Insect Cells The following method describes recombinant expression in Baculov irus-infected insect cells The sequence coding for PRO is fused upstream of an epitope tag contained within a baculovirus expression vector Such epitope tags include poly-His tags and immunoglobulm tags (like Fc regions of IgG) A variety of plasmids may be employed, including plasmids derived from commercially available plasmids such as pVLl 393 (Novagen) Briefly, the sequence encoding PRO or the desired portion of the coding sequence of PRO (such as the sequence encoding the extracellular domain of a transmembrane protein or the sequence encoding the mature protein if the protein is extracellular) is amplified by PCR with primers complementary to the 5 and 3 regions The 5 primer may incorporate flanking (selected) restriction enzyme sites The product is then digested with those selected restriction enzymes and subcloned into the expression vector Recombinant baculovirus is generated by co transf ecting the above plasmid and BaculoGold™ virus DNA (Pharmingen) into Spodoptei afrugψerda ("Sf9 ) cells (ATCC CRL 171 1 ) using hpof ectin (commercially available from GIBCO-BRL) After 4 - 5 days of incubation at 28' C, the released viruses are harvested and used for further amplifications Viral infection and protein expression are performed as described by O Reilley et al Baculov irus expression vectors A Laboratory Manual Oxford Oxford University Press (1994) Expressed poly-His tagged PRO can then be purified, for example, by Nr + chelate affinity chromatography as follows Extracts are prepared from recombinant virus-infected Sf9 cells as described by Rupert et al , Nature. 362 175-179 (1993) Briefly, Sf9 cells are washed, resuspended in sonication buffer (25 ml Hepes, pH 7 9, 12 5 mM MgCl 2 , 0 1 mM EDTA, 10% glycerol, 0 1 % NP-40, 0 4 M KCl), and sonicated twice for 20 seconds on ice The sonicates are cleared by centrifugation, and the supernatant is diluted 50-fold in loading buffer (50 mM phosphate, 300 mM NaCl, 10% glycerol, pH 7 8) and filtered through a 045 μm filter A NfVNTA agarose column (commercially available from Qiagen) is prepared with a bed volume of 5 ml, washed with 25 ml of water and equilibrated with 25 ml of loading buffer The filtered cell extract is loaded onto the column at 0 5 ml per minute The column is washed to baseline A 280 with loading buffer at which point traction collection is started Next, the column is washed with a secondary wash buffer (50 M phosphate, 300 mM NaCl, 10% glycerol, pH 6 0), which elutes nonspecifically bound protein After reaching A 28 „basehne again, the column is developed with a 0 to 500 mM imidazole gradient in the secondary wash buffer One ml fractions are collected and analyzed by SDS-PAGE and silver staining or Western blot with Nι 2+ -NTA-conjugated to alkaline phosphatase (Qiagen) Fractions containing the eluted Hιs ]ιr tagged PRO are pooled and dialyzed against loading buffer Alternatively, purification of the IgG tagged (or Fc tagged) PRO can be performed using known chromatography techniques, including for instance, Protein A or protein G column chromatography Many of the PRO polypeptides disclosed herein were successfully expressed as described above EXAMPLE 32 Preparation of Antibodies that Bind PRO This example illustrates preparation of monoclonal antibodies which can specifically bind PRO Techniques for producing the monoclonal antibodies are known in the art and are described, for instance, in Goding. supta Immunogens that may be employed include purified PRO. fusion proteins containing PRO, and cells expressing recombinant PRO on the cell surface Selection ot the immunogen can be made by the skilled artisan without undue experimentation Mice, such as Balb/c, are immunized ith the PRO immunogen emulsified in complete Freund's adjuvant and injected subcutaneously or intrapeπtoneally in an amount from 1 -100 micrograms Alternatively, the immunogen is emulsified in MPL-TDM adjuvant (Ribi Immunochemical Research. Hamilton, MT) and injected into the animal hind foot pads The immunized mice are then boosted 10 to 12 days later with additional immunogen emulsified in the selected adjuvant Thereafter, for several weeks, the mice may also be boosted with additional immunization injections Serum samples may be periodically obtained from the mice by retro-orbital bleeding for testing in ELISA assays to detect anti-PRO antibodies After a suitable antibody titer has been detected, the animals ' positive" tor antibodies can be injected with a final intravenous injection ot PRO Three to four days later, the mice are sacrificed and the spleen cells are harvested The spleen cells are then fused (using 35% polyethylene glycol) to a selected murine myeloma cell line such as P3X63AgU 1 , available from ATCC, No CRL 1597 The fusions generate hybndoma cells which can then be plated in 96 well tissue culture plates containing HAT (hypoxanthme ammopterin and thymidine) medium to inhibit proliferation of non-fused cells, myeloma hybrids, and spleen cell hybrids The hybndoma cells will be screened in an ELISA for reactivity against PRO Determination of "positive" hybndoma cells secreting the desired monoclonal antibodies against PRO is within the skill in the art The positive hybndoma cells can be injected lntrapeπtoneally into syngeneic Balb/c mice to produce ascites containing the anti-PRO monoclonal antibodies Alternatively, the hybndoma cells can be grown in tissue culture flasks or roller bottles Purification of the monoclonal antibodies produced in the ascites can be accomplished using ammonium sulfate precipitation, followed by gel exclusion chromatography Alternatively, affinity chromatography based upon binding of antibody to protein A or protein G can be employed EXAMPLE 33 Purification of PRO Polypeptides Using Specific Antibodies Native or recombinant PRO polypeptides may be purified by a variety of standard techniques in the art of protein purification For example, pro-PRO polypeptide, mature PRO polypeptide, or pre-PRO polypeptide is purified by lmmunoaffinity chromatography using antibodies specific for the PRO polypeptide of interest In general, an lmmunoaffinity column is constructed by covalently coupling the anti-PRO polypeptide antibody to an activated chromatographic resin Polyclonal immunoglobulins are prepared from immune sera either by precipitation with ammonium sulfate or by purification on immobilized Protein A (Pharmacia LKB Biotechnology. Piscataway, N J ) Likewise, monoclonal antibodies are prepared from mouse ascites fluid by ammonium sulfate precipitation or chromatography on immobilized Protein A Partially purified immunoglobulm is covalently attached to a chromatographic resin such as CnBr-acti vated SEPHAROSE™ (Pharmacia LKB Biotechnology) The antibody is coupled to the resin, the resin is blocked, and the derivative resin is washed according to the manufacturer's instructions Such an lmmunoaffinity column is utilized in the purification of the PRO polypeptide by preparing a fraction from cells containing the PRO polypeptide in a soluble form This preparation is derived by solubihzation of the whole cell or of a subcellular fraction obtained v differential centrifugation by the addition ot detergent or by other methods well known in the art Alternatively soluble PRO polypeptide containing a signal sequence may be secreted in useful quantity into the medium in which the cells are grown A soluble PRO polypeptide-containing preparation is passed over the lmmunoaffinity column, and the column is washed under conditions that allow the preferential absorbance of the PRO polypeptide (e g , high ionic strength buffers in the presence of detergent) Then, the column is eluted under conditions that disrupt antibody/PRO polypeptide binding (e g , a low pH buffer such as approximately pH 2-3 or a high concentration of a chaotrope such as urea or thiocyanate ion) and the PRO polypeptide is collected EXAMPLE 34 Drug Screening This invention is particularly useful tor screening compounds by using PRO polypeptides or a binding fragment thereof in any of a variety ot drug screening techniques The PRO polypeptide or fragment employed in such a test may either be tree in solution, affixed to a solid support borne on a cell surface or located intracellularly One method of drug screening utilizes eukaryotic or prokaryotic host cells which are stably transformed with recombinant nucleic acids expressing the PRO polypeptide or fragment Drugs are screened against such transformed cells in competitive binding assays Such cells, either in viable or fixed form, can be used for standard binding assays One may measure, for example, the formation of complexes between a PRO polypeptide or a fragment and the agent being tested Alternatively, one can examine the diminution in complex formation between the PRO polypeptide and its target cell or target receptors caused by the agent being tested Thus, the present invention provides methods ot screening for drugs or any other agents which can affect a PRO polypeptide-associated disease or disorder These methods comprise contacting such an agent with a PRO polypeptide or fragment thereof and assaying (l) for the presence of a complex between the agent and the PRO polypeptide or fragment, or (n) for the presence of a complex between the PRO polypeptide or fragment and the cell, by methods well known in the art In such competitive binding assays, the PRO polypeptide or fragment is typically labeled After suitable incubation, the free PRO polypeptide or fragment is separated from that present in bound form, and the amount of free or uncomplexed label is a measure of the ability of the particular agent to bind to the PRO polypeptide or to interfere with the PRO polypeptide/cell complex Another technique for drug screening provides high throughput screening for compounds having suitable binding affinity to a polypeptide and is described in detail in WO 84/03564, published on September 13, 1984 Briefly stated, large numbers of different small peptide test compounds are synthesized on a solid substrate, such as plastic pins or some other surface As applied to a PRO polypeptide, the peptide test compounds are reacted with the PRO polypeptide and washed Bound PRO polypeptide is detected by methods well known in the art Purified PRO polypeptide can also be coated directly onto plates for use in the aforementioned drug screening techniques In addition, non-neutralizing antibodies can be used to capture the peptide and immobilize it on the solid support This invention also contemplates the use of competitive drug screening assays in which neutralizing antibodies capable of binding a PRO polypeptide specifically compete with a test compound for binding to the PRO polypeptide or fragments thereof In this manner, the antibodies can be used to detect the presence of any peptide which shares one or more antigenic determinants ith a PRO polypeptide EXAMPLE 35 Rational Drug Design The goal of rational drug design is to produce structural analogs of a biologically active polypeptide ot interest (t e , a PRO polypeptide) or ot small molecules with which they interact e g , agonists, antagonists, or inhibitors Any of these examples can be used to fashion drugs which are more active or stable forms ot the PRO polypeptide or which enhance or interfere with the function ot the PRO polypeptide in o (cf Hodgson Bio/Technology 9 19-21 ( 1991 )) In one approach, the three-dimensional structure of the PRO polypeptide. or of a PRO polypeptide-inhibitor complex, is determined by x-ray crystallography, by computer modeling or, most typically by a combination of the two approaches Both the shape and charges of the PRO polypeptide must be ascertained to elucidate the structure and to determine active sιte(s) of the molecule Less often, useful information regarding the structure of the PRO polypeptide may be gained by modeling based on the structure of homologous proteins In both cases, relevant structural information is used to design analogous PRO polypeptide-like molecules or to identify efficient inhibitors Useful examples of rational drug design may include molecules which have improved activity or stability as shown by Braxton and Wells, Biochemistry, 31 7796-7801 ( 1992) or which act as inhibitors, agonists, or antagonists of native peptides as shown by Athauda et al , J Biochem . 1 13 742-746 (1993) It is also possible to isolate a target-specific antibody, selected by functional assay, as described above, and then to solve its crystal structure This approach, in principle, yields a pharmacore upon which subsequent drug design can be based It is possible to bypass protein crystallography altogether by generating anti-idiotypic antibodies (anti-ids) to a functional, pharmacologically active antibody As a mirror image of a mirror image, the binding site of the anti-ids would be expected to be an analog of the original receptor The anti-id could then be used to identify and isolate peptides from banks of chemically or biologically produced peptides The isolated peptides would then act as the pharmacore By virtue of the present invention, sufficient amounts of the PRO polypeptide may be made available to perform such analytical studies as X-ray crystallography In addition, knowledge of the PRO polypeptide amino acid sequence provided herein will provide guidance to those employing computer modeling techniques in place of or in addition to x-ray crystallography EXAMPLE 36 In Vitto Antitumor Assay The antiprohterati ve activity of the PRO240, PR0381 , PR0534 PRO540 PR0698, PR0982, PRO1005, PRO1007, PROl 131 , PROl 157, PROl 199, PR01265, PR01286, PR01313 PR01338, PR01375, PRO1410, PR01488, PR03438, PRO4302, PRO4400, PR05725, PR0183, PRO202 PR0542, PR0861 , PRO1096 or PR03562 polypeptide was determined in the investigational, disease-oriented m \ itio anti-cancer drug discovery assay of the National Cancer Institute (NCI), using a sulforhodamine B (SRB) dye binding assay essentially as described by Skehan et al . J Natl Cancer Inst 82 1 107-1 1 12 (1990) The 60 tumor cell lines employed in this study ("the NCI panel ) as well as conditions for their maintenance and culture in \ it to have been described by Monks et al , J Natl Cancer Inst . 83 757 766 (1991 ) The purpose of this screen is to initially evaluate the cytotoxic and/or cytostatic activity of the test compounds against different types of tumors (Monks et al , supra Boyd, Cancer Pnnc Pract Oncol Update, 3( 10) 1 -12 r i 989]) Cells from approximately 60 human tumor cell lines were harvested with trypsin/EDTA (Gibco), washed once, resuspended in IMEM and their viability w as determined The cell suspensions were added by pipet (lOO μl volume) into separate 96-well microtiter plates The cell density for the 6-day incubation was less than for the 2-day incubation to prevent overgrowth Inoculates were allowed a preincubation period of 24 hours at 37 °C for stabilization Dilutions at twice the intended test concentration were added at time zero in 100 μl aliquots to the microtiter plate wells ( 1 2 dilution) Test compounds were evaluated at five half-log dilutions ( 1000 to 100,000 fold) Incubations took place tor two days and six days in a 5% CO, atmosphere and 100% humidity After incubation, the medium was removed and the cells were fixed in 0 1 ml of 10% trichloroacetic acid at 40°C The plates were rinsed five times with deionized water dried stained tor 30 minutes with 0 1 ml of 0 4% sulforhodamine B dve (Sigma) dissolved in 1 % acetic acid rinsed tour times with 1 % acetic acid to remov e unbound dye, dried, and the stain was extracted for five minutes with 0 1 ml of 10 mM Tπs base [tπs(hydroxymethyl)amιnomethane], pH 10 5 The absorbance (OD) of sulforhodamine B at 492 nm was measured using a computer-interfaced, 96-well microtiter plate reader A test sample is considered positive if it shows at least 40% growth inhibitory effect at one or more concentrations The results are shown in the following Table 7, where the tumor cell type abbreviations are as follows NSCL = non-small cell lung carcinoma, CNS = central nervous system Table 7 Test compound Davs Tumor Cell Line Type Cell Line Designation PRO240 6 Leukemia MOLT-4. RPMI-8226 PRO240 6 Colon Cancer COLO 205, HCT-1 16, KM 12 PRO240 6 Breast Cancer MDA-MB-435 PRO240 6 NSCL NCI-H322M, HOP-92 PRO240 6 Prostate Cancer DU-145 PRO240 6 CNS-Cancer SNB-75 PRO240 2 Leukemia RPM I -8226 PRO240 2 NSCL HOP92 PRO240 2 CNS Cancer SF-539 PRO240 2 Breast Cancer NCI ADR-RES* PRO240 2 Leukemia HL-60CTB) PRO240 2 Breast Cancel MDA-MB-231/ATCC PRO240 N/A Leukemia HL-60(TB), MOLT-4 PRO240 N/A Leukemia RPMI-8226 PR0381 N/A NSCL A549/ATCC, EKVX. HOP-62 : PR0381 N/A NSCL NCI-H226*, NCI-H23 PR0381 N/A NSCL NCI-H322M, NCI-H460* PR0381 N/A NSCL NCI-H522* PR0381 N/A NSCL HOP-92* PR0381 N/A Colon Cancer COLO 205*, HCC-2998* PR0381 N/A Colon Cancer HCT- 1 16, HCT-15. HT29 PR0381 N/A Colon Cancer SW620, KM12 PR0381 N/A Breast Cancer BT-549*, HS 578T*, MCF7 PR0381 N/A Breast Cancer MDA-MB-435, MDA-N PR0381 N/A Breast Cancer T-47D. MDA-MB-231/ATCC PR0381 N/A Ovarian Cancer IGROV , OVCAR-3 PR0381 N/A Ovarian Cancer OVCAR-5*, OVCAR-8 PR0381 N/A Ovarian Cancer SK-OV-3, OVCAR-4 PR0381 N/A Leukemia CCRF-CEM*, HL-60(TB)* PR0381 N/A Leukemia K-562. MOLT-4 PR0381 N/A Renal Cancer 786-0*, A498, ACHN, CAKI- PR0381 N/A Renal Cancer RXF 393, SN 12C, TK-10* PR0381 N/A Renal Cancer UO-31 * PR0381 N/A Melanoma LOX IMVP0 M14 PR0381 N/A Melanoma MALME-3M, UACC-62* PR0381 N/A Melanoma SK-MEL-2, SK-MEL-28 PR0381 N/A Melanoma SK-MEL-5, UACC-257 PR0381 N/A Prostate Cancer DU-145. PC-3* PR0381 N/A CNS Cancer SF-268, SNB-19*, U251 * PR0381 N/A CNS Cancer SF-295, S-539, SNB-75 * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PR0534 N/A NSCL A549/ATCC HOP-62 HOP-92 PR0534 N/A NSCL NCI-H23. NCI-H322M PR0534 N/A NSCL NCI-H460, NCI-H522 PR0534 N/A NSCL NCI-H266 PR0534 N/A Colon Cancer HCT-1 16, HT29, KM 12 PR0534 N/A Colon Cancer SW620 PR0534 N/A Breast Cancer BT-549. HS 578T, MCF7 PR0534 N/A Breast Cancer MDA-MB-231/ATCC PR0534 N/A Breast Cancer MDA-MB-435 MDA-N PR0534 N/A Breast Cancer T-47D PR0534 N/A Ov arian Cancer IGROVI, OVCAR-3* PR0534 N/A Ovarian Cancer OVCAR-8 PR0534 N/A Leukemia HL-60(TB), K-562, MOLT-4* PR0534 N/A Leukemia RPMI-8226- CCRF-CEM PR0534 N/A Renal Cancer 786-0, A498 ACHN, RXF 393 PR0534 N/A Renal Cancer SN 12C, TK-10 PR0534 N/A Melanoma LOX IMVI, Ml 4, SK-MEL-28 PR0534 N/A Melanoma SK-MEL-2, UACC-257 PR0534 N/A Melanoma UACC-62 PR0534 N/A Prostate Cancer DU-145 PR0534 N/A CNS Cancer SF-268, SF-295, SNB-19 PR0534 N/A CNS Cancer SNB-75 PRO540 6 Leukemia HL-60(TB) PRO540 6 Colon Cancer KM12 PRO540 6 CNS Cancer SF-295 PRO540 6 Melanoma LOX IMVI PRO540 6 Ovarian Cancer SK-OV-3 PRO540 6 Renal Cancer 786-0, CAKI-1 , UO-31 , TK-10 PRO540 2 NSCL HOP-62, HOP-92, NCI-H460 PRO540 2 Colon Cancer HCC-2998 PRO540 2 CNS Cancer SF-295, SN-75 PRO540 2 Ovarian Cancer SK-OV-3 PR0698 N/A NSCL EKVX, HOP-62. NCI-H322M PR0698 N/A NSCL NCI-H522 PR0698 N/A Colon Cancer HCT-1 16 PR0698 N/A Breast Cancer MDA-MB-231/ATCC PR0698 N/A Breast Cancer MDA-MB-435. MDA-N * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PR0698 N/A Ovarian Cancer OVCAR-3, OVCAR-4 PR0698 N/A Ovarian Cancer OVCAR-5, OVCAR-8 PR0698 N/A Ovarian Cancer SK-OV-3 PR0698 N/A Renal Cancer ACHN, RXF 393, SN 12C PR0698 N/A Renal Cancer TK- 10 PR0698 N/A CNS Cancer SF-268. SF-295, SNB-19 PR0698 N/A CNS Cancer SNB-75*, U251 PR0982 6 NSCL HOP-62 PR0982 6 Leukemia CCRF-CEM, RPMI-8226 PR0982 6 Melanoma LOX IMVI PR0982 N/A NSCL HOP-92, NCI-H522 PR0982 N/A Colon Cancer COLO 205 PR0982 N/A Breast Cancer BT-549, MDA-MB-231/ATCC PR0982 N/A Ovarian Cancer IGROVI, OVCAR-5 PR0982 N/A Leukemia MOLT-4, RPMI-8226 PR0982 N/A Renal Cancer 786-0, CAKI-1 , RXF 393 PR0982 N/A Renal Cancer TK-10 PR0982 N/A Prostate Cancer PC-3 PR0982 N/A CNS Cancer SNB-19, U251 PRO 1005 N/A NSCL A549/ATCC PRO 1005 N/A Renal Cancer TK-10 PRO 1005 N/A CNS Cancer SNB-19 PRO 1007 6 Leukemia CCRF-CEM PRO 1007 6 Colon Cancer HCT-1 16, KM 12 PRO 1007 N/A NSCL NCI-H522 PRO 1007 N/A Colon Cancer KM12 PRO 1007 N/A Breast Cancer HS 578T PRO 1007 N/A Breast Cancer MDA-MB-231/ATCC * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PRO 1007 N/A Ovarian Cancer IGROVI PRO 1007 N/A Leukemia RPMI-8226 PRO 1007 N/A Melanoma SK-MEL-628 PROl 131 N/A Leukemia MOLT-4, CCRF-CEM PROl 131 N/A NSCL HOP 62, NCI-H23, NCI-H522 PROl 131 N/A Breast Cancer MCF7, MDA-MB-231/ATCC PROl 131 N/A Ovarian Cancer OVCAR 3, OVCAR-4 PROl 131 N/A Ovarian Cancer OVCAR-8 PROl 131 N/A Melanoma LOX IMVI, UACC-257 PROl 131 N/A CNS Cancer SNB 19. U251 PROl 157 N/A NSCL A549/ATCC, HOP-62* PROl 157 N/A NSCL HOP-92*, NCI-H23 PROl 157 N/A NSCL NCI-H322M, NCI-H522* PROl 157 N/A NSCL NCI-H226 PROl 157 N/A Colon Cancer COLO 205, HCT-1 16, HCT-15 PROl 157 N/A Colon Cancer HT29, KM12*, SW620 PROl 157 N/A Breast Cancer BT-549*, HS 578T, MCF7 PROl 157 N/A Breast Cancer MDA-MB-231/ATCC* PROl 157 N/A Breast Cancer MDA-MB-435, MDA-N PROl 157 N/A Ovarian Cancer IGROVI, OVCAR-3* PROl 157 N/A Ovarian Cancer OVCAR-5*, OVCAR-8 PROl 157 N/A Ovarian Cancer SK-OV-3 PROl 157 N/A Leukemia HL-60(TB), K-562, MOLT-4 PROl 157 N/A Leukemia RPMI-8226, CCRF-CEM, SR PROl 157 N/A Renal Cancer 786-0*, A498, ACHN PROl 157 N/A Renal Cancer CAKI-1 *, RXF 393*, TK-10* PROl 157 N/A Renal Cancer UO-31 * PROl 157 N/A Melanoma LOX IMVI, Ml 4 PROl 157 N/A Melanoma MALME-3M, SK-MEL-28 PROl 157 N/A Melanoma SK-MEL-2, SK-MEL-5 PROl 157 N/A Melanoma UACC-257, UACC-62 PROl 157 N/A Prostate Cancer DU-145, PC-3* PROl 157 N/A CNS Cancer SF-268, SF-295, S-539* PROl 157 N/A CNS Cancer SNB-19, SNB-75*, U251 * * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PROl 199 N/A NSCL A549/ATCC; HOP-62 PROl 199 N/A NSCL HOP-92; NCI-H23 PRO 1199 N/A NSCL NCI-H322M; NCI-H522 PROl 199 N/A Colon Cancer HCC-2998*; SW620 PROl 199 N/A Breast Cancer HS 578T; MCF7 PROl 199 N/A Breast Cancer MDA-MB-435: MDA-N PROl 199 N/A Breast Cancer T-47D PROl 199 N/A Ovarian Cancer IGROVI; OVCAR-3 PROl 199 N/A Ovarian Cancer OVCAR-4; OVCAR-5 PROl 199 N/A Ovarian Cancer OVCAR-8 PROl 199 N/A Leukemia CCRF-CEM*; RPMI-8226* PROl 199 N/A Renal Cancer RXF 393; SN 12C; UO-31 PRO 1 199 N/A Melanoma LOX IMVI; M l 4: SK-MEL-28 PROl 199 N/A Melanoma UACC-257 PROl 199 N/A Prostate Cancer PC-3 PROl 199 N/A CNS Cancer SNB-19; SNB-75; U251 PRO 1265 N/A NSCL EKVX PRO 1265 N/A Colon Cancer COLO 205; SW620 PRO 1265 N/A Breast Cancer HS 578T; MCF7 PRO 1265 N/A Breast Cancer MDA-MB-231/ATCC PROl 265 N/A Breast Cancer MDA-MB-435; MDA-N* PRO 1265 N/A Breast Cancer BT 549 PRO 1265 N/A Ovarian Cancer IGROVI; OVCAR-3 PRO 1265 N/A Ovarian Cancer OVCAR-4; OVCAR-5 PRO 1265 N/A Ovarian Cancer OVCAR-8 PRO 1265 N/A Leukemia CCRF-CEM*; HL-60(TB) PRO 1265 N/A Leukemia K-562; MOLT-4; RPMI-8226 PRO 1265 N/A Renal Cancer ACHN; CAKI-1 ; SN 12C PRO 1265 N/A Renal Cancer RXF-393 PRO 1265 N/A Melanoma LOX IMVI; UACC-257 PRO 1265 N/A CNS Cancer SF-295; SNB-19; U251 PROl 286 N/A NSCL A549/ATCC; EKVX; HOP-92 PRO 1286 N/A NSCL NCI-H23; NCI-H322M PRO 1286 N/A NSCL NCI-H522*; NCI-H226* * = CYTOTOXIC Table 7 Continued Test compound Davs Tumor Cell Line Type Cell Line Designation PRO 1286 N/A Colon Cancer HCT- 1 16*; SW620 PRO 1286 N/A Breast Cancer BT-549; MCF7; MDA-N PROl 286 N/A Breast Cancer NCI ADR-RES*; T-47D PRO 1286 N/A Ovarian Cancer OVCAR-4*; OVCAR-5* PRO 1286 N/A Ovarian Cancer OVCAR-8*: SK-OV-3 PRO 1286 N/A Renal Cancer 786-0; ACHN. CAKJ-1 PROl 286 N/A Renal Cancer RXF 393*; SN 12C*; TK-10* PRO 1286 N/A Melanoma LOX IMVI: SK-MEL-2 PRO 1286 N/A Melanoma SK-MEL-5. UACC-257 PROl 286 N/A Melanoma MEL- 14 PROl 286 N/A Prostate Cancer PC-3 PRO 1286 N/A CNS Cancer SF-268: SF-295; S-539* PRO 1286 N/A CNS Cancer SNB- 19; SNB-75* PR01313 N/A NSCL A549/ATCC; HOP-62; HOP-92 PR01313 N/A NSCL NCI-H23; NCI-H322M PR01313 N/A NSCL NCI-H460; NCI-H522 PR01313 N/A NSCL NCI-H226 PR01313 N/A Colon Cancer COLO 205; HCT-1 16; HCT-15 PR01313 N/A Colon Cancer HT29; SW620 PR01313 N/A Breast Cancer BT-549*; HS 578T; MCF7 PR01313 N/A Breast Cancer MDA-MB-231/ATCC PR01313 N/A Breast Cancer MDA-MB-435; MDA-N PR01313 N/A Breast Cancer NCI ADR-RES PR01313 N/A Ovarian Cancer IGROVI*; OVCAR-3 PR01313 N/A Ovarian Cancer OVCAR-4; OVCAR-5 PR01313 N/A Ovarian Cancer OVCAR-8; SK-OV-3 PR01313 N/A Leukemia CCRF-CEM: HL-60(TB)* PR01313 N/A Leukemia K-562; MOLT-4; RPMI-8226 PR01313 N/A Renal Cancer 786-0; A498. ACHN; CAKI-1 PR01313 N/A Renal Cancer RXF 393; SN 12C; TK-10* PR01313 N/A Renal Cancer UO-31 PR01313 N/A Melanoma LOX IMVI: M 14; MALME-3M PR01313 N/A Melanoma SK-MEL-28: SK-MEL-5 PR01313 N/A Melanoma UACC-257: SK-MEL-2 PR01313 N/A Prostate Cancer DU-145; PC-3 * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PR01313 N/A CNS Cancer SF-268; SF-295; SNB- 19 PR01313 N/A CNS Cancer U251 ' PROl 338 N/A NSCL A549/ATCC; EKVX*, HOP-62 PRO 1338 N/A NSCL HOP-92*; NCI-H226* PRO 1338 N/A NSCL NCI-H23*; NCI-H322M PROl 338 N/A NSCL NCI-460; NCI-H522* PRO 1338 N/A Colon Cancer HCC-2998*; HCT-1 16* PR01338 N/A Colon Cancel HCT-15; HT29; SW620 PROl 338 N/A Breast Cancer BT-549*; MCF7 PR01338 N/A Breast Cancer MDA-MB-435, MDA-N PR01338 N/A Breast Cancer NCI/ADR-RES* PROl 338 N/A Ovarian Cancer OVCAR-3; OVCAR-4* PR01338 N/A Ovarian Cancer OVCAR-5*; OVCAR-8* PROl 338 N/A Ovarian Cancer SK-OV-3 PRO 1338 N/A Renal Cancer 786-0; ACHN, CAKI-1 PRO 1338 N/A Renal Cancer RXF-393*; SN 12C*; TK-10* PR01338 N/A Renal Cancer UO-31 * PR01338 N/A Melanoma LOX IMVI; Ml 4; SK-MEL-2* PR01338 N/A Melanoma SK-MEL-5*; UACC-257* PROl 338 N/A Melanoma UACC-62 PR01338 N/A Prostate Cancer DU-145; PC-3 PROl 338 N/A CNS Cancer SF-268; SF-295; S-539* PR01338 N/A CNS Cancer SNB-19; SNB-75*; U251 * PR01375 N/A NSCL NCI-H23 PROl 375 N/A Colon Cancer SW620 PRO 1375 N/A Breast Cancer NCI ADR-RES PR01375 N/A Ovarian Cancer OVCAR-5 PROl 375 N/A Renal Cancer SN 12C PROl 375 N/A Melanoma LOX IMVI PROl 375 N/A CNS Cancer SF-268 PRO1410 N/A Renal Cancer UO-31 PRO1410 N/A NSCL NCI-H522 PRO1410 N/A Colon Cancer HCC-2998; KM 12 * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PRO1410 N/A Ovarian Cancer IGROVI PRO1410 N/A Leukemia SR PRO1410 N/A Renal Cancer A498*: TK-10 PRO1410 N/A Melanoma LOX IMVI PRO1410 N/A CNS Cancer S-539 PROl 488 N/A NSCL A549/ATCC*; EKVX* PR01488 N/A NSCL HOP-62; HOP-92; NCI-H23 PR01488 N/A NSCL NCI-H322M; NCI-H460 PRO 1488 N/A NSCL NCI-H522; NCI-H226 PRO 1488 N/A Colon Cancer COLO 205; HCC-2998 PRO 1488 N/A Colon Cancer HCT-1 16*; HCT-15 PR01488 N/A Colon Cancer KM 12. SW620 PRO 1488 N/A Breast Cancer HS 578T PR01488 N/A Breast Cancer MDA-MB-231/ATCC PR01488 N/A Breast Cancer MDA-MB-435; MDA-N PRO 1488 N/A Breast Cancer NCI/ADR-RES; T-47D PRO 1488 N/A Breast Cancer BT-549 PR01488 N/A Ovarian Cancer IGROVI; OVCAR-3 PR01488 N/A Ovarian Cancer OVCAR-4; OVCAR-5* PR01488 N/A Ovarian Cancer OVCAR-8; SK-OV-3 PRO 1488 N/A Leukemia CCRF-CEM; K-562 PRO 1488 N/A Leukemia RPMI-8226; SR PR01488 N/A Renal Cancer 786-0*: A498; ACHN; CAK1 PR01488 N/A Renal Cancer RXF 393; SN 12C*; TK-10* PRO 1488 N/A Renal Cancer UO-31 PR01488 N/A Melanoma LOX IMVI; Ml 4; SK-MEL-! PR01488 N/A Melanoma SK-MEL-28; SK-MEL-5 PRO 1488 N/A Melanoma UACC-257*; UACC-62* PRO 1488 N/A Prostate Cancer DU-145; PC-3* PR01488 N/A CNS Cancer SF-268; SF-295; S-539 PR01488 N/A CNS Cancer SNB-19: SNB-75 PR03438 N/A Colon Cancer HCC-2998; KM 12 PR03438 N/A Leukemia SR PR03438 N/A Renal Cancer RXF 393; TK-10 * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PR03438 N/A Prostate Cancer PC-3 PR03438 N/A Ovarian Cancer IGROVI PRO4302 N/A NSCL A549/ATCC*, EKVX* PRO4302 N/A NSCL HOP-62, HOP-92*, NCI-H23 PRO4302 N/A NSCL NCI-H322M. NCI-H460 PRO4302 N/A NSCL NCI-H522 PRO4302 N/A Colon Cancer COLO 205, HCC-2998 PRO4302 N/A Colon Cancer HCT- 15, KM 12, SW620 PRO4302 N/A Breast Cancer BT-549*, HS 578T PRO4302 N/A Breast Cancer MDA-MB-435. MDA-N PRO4302 N/A Breast Cancer NCI/ADR-RES, T-47D PRO4302 N/A Ovarian Cancer IGROVI, OVCAR-3 PRO4302 N/A Ovarian Cancer OVCAR-4, OVCAR-5* PRO4302 N/A Ovarian Cancer OVCAR-8. SK-OV-3 PRO4302 N/A Leukemia CCRF-CEM, HL-60(TB) PRO4302 N/A Leukemia K-562, SR; RPMI-8226 PRO4302 N/A Renal Cancer 786-0*, A498*, ACHN PRO4302 N/A Renal Cancer CAKI-1 , RXF 393, SN 12C* PRO4302 N/A Renal Cancer TK-10*, UO-31 * PRO4302 N/A Melanoma LOX IMVI, M14, SK-MEL-2* PRO4302 N/A Melanoma SK-MEL-28, SK-MEL-5 PRO4302 N/A Melanoma UACC-257*, UACC-62* PRO4302 N/A Prostate Cancer DU-1455, PC-3* PRO4302 N/A CNS Cancer SF-268, SF-295, S-539 PRO4302 N/A CNS Cancer SNB- 19, SNB-75 PRO4400 N/A NSCL HOP-92, NCI-H226 PRO4400 N/A NSCL A549/ATCC, EKVX, HOP-62 PRO4400 N/A NSCL NCI-H23, NCI-H322 PRO4400 N/A NSCL NCI-H522 PRO4400 N/A Colon Cancer HCC-2998. HCT-15, HT29 PRO4400 N/A Colon Cancer KM 12, SW620 PRO4400 N/A Breast Cancer HS 578T, BT-549, MCF7 PRO4400 N/A Breast Cancer MDA-MB-231/ATCC PRO4400 N/A Breast Cancer NCI/ADR-RES PRO4400 N/A Ovarian Cancer IGROVI*, OVCAR-3 PRO4400 N/A Ovarian Cancer OVCAR-4, OVCAR-5 PRO4400 N/A Ovarian Cancer OVCAR-8 * = CYTOTOXIC Table 7 Continued Test compound Davs Tumor Cell Line Type Cell Line Designation PRO4400 N/A Leukemia CCRF-CEM: HL-60(TB); SR PRO4400 N/A Leukemia RPMI-8226; K-562; MOLT-4 PRO4400 N/A Prostate Cancer PC-3 PRO4400 N/A Melanoma MALME-3M: M 14: UACC-257 PRO4400 N/A Renal Cancer A498; ACHN; CAKI- 1 PRO4400 N/A Renal Cancer RXF 393; SN 12C; TK-10 PRO4400 N/A Renal Cancer 786-0 PRO4400 N/A CNS Cancer SF-268; SNB-19; U251 PR05725 N/A NSCL A549/ATCC: EKVX; HOP-92 PR05725 N/A NSCL NCI-H23; NCI-H322M PR05725 N/A NSCL NCI-H522; NCI-H226 PR05725 N/A NSCL NCI-H460 PR05725 N/A Colon Cancer COLO 205; HCC-2998 PR05725 N/A Colon Cancer HCT-15; HT29: KM12; SW620 PR05725 N/A Breast Cancer BT-549; HS 578T; MCF7 PR05725 N/A Breast Cancer MDA-MB231/ATCC PR05725 N/A Breast Cancer NCI/ADR-RES; T-47D PR05725 N/A Ovarian Cancer OVCAR-3; OVCAR-4 PR05725 N/A Ovarian Cancer OVCAR-8 PR05725 N/A Leukemia CCRF-CEM; HL-60(TB)* PR05725 N/A Leukemia K-562; MOLT-4; RPMI-8226 PR05725 N/A Leukemia SR PR05725 N/A Renal Cancer 786-0; ACHN; CAKI-1 PR05725 N/A Renal Cancer RXF 393; SN 12C; TK-10 PR05725 N/A Renal Cancer UO-31 ; A498 PR05725 N/A Melanoma LOX IMVI; Ml 4; SK-MEL-28 PR05725 N/A Melanoma UACC-257 PR05725 N/A Prostate Cancer PC-3 PR05725 N/A CNS Cancer SF-295; SNB-19; SNB-75 PR05725 N/A CNS Cancer U251 ; SF-268 PROl 83 6 Leukemia HL-60(TB); SR; CCRF-CEM PROl 83 6 Leukemia RPMI-8226 PROl 83 6 Colon Cancer KM 12; COLO 205; SW620 PRO 183 6 Colon Cancer HCT-15; HT-29 PROl 83 6 Breast Cancer MDA-N; MDA-MB-435 PROl 83 6 NSCL HOP-62; A549/ATCC; EKVX PROl 83 6 NSCL NCI-H23; NCI-H322M * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PROl 83 6 Ovarian Cancer IGROVI, OVCAR-8 PROl 83 6 Melanoma LOX IMVI, UACC-62 PRO 183 6 Melanoma UACC-257 PRO 183 6 CNS Cancer SF-295, S-539, U251 PROl 83 6 Renal Cancer SN 12C PRO202 6 NSCL HOP-62, NCI-H322M PRO202 6 NSCL NCI-H460, NCI-H522 PRO202 6 CNS Cancer SF-268, SF-295, SNB-19 PRO202 6 CNS Cancer U251 PRO202 6 Breast Cancer MDA-N, MDA-MB 231/ATCC PRO202 6 Breast Cancer MCF7 PRO202 6 Colon Cancer KM 12. HCC-2998 PRO202 6 Renal Cancer SN 12C PRO202 6 Leukemia CCRF-CEM, RPMI-8226 PRO202 6 Leukemia MOLT-4 PRO202 6 Melanoma LOX IMVI PRO202 2 NSCL NCI-H322M PRO202 2 Colon Cancer KM-12, HCC-2998* PRO202 2 CNS Cancer SNB-19 PRO202 2 Leukemia K-562, HL-60CTB) PRO540 6 Leukemia CCRF-CEM, K-562, MOLT-4 PRO540 6 NSCL EKVX, HOP-92, NCI-H23 PRO540 6 NSCL NCI-H322M PRO540 6 Colon Cancer COLO 205, HCT-1 16, HCT-15 PRO540 6 Colon Cancer SW620 PRO540 6 CNS Cancer SF-295, SNB-19, SNB-75 PRO540 6 CNS Cancer U251 PRO540 6 Melanoma M14 PRO540 6 Ovarian Cancer IGROVI, OVCAR-4 PRO540 6 Ovarian Cancer OVCAR-5 PRO540 6 Renal Cancer RXF 393, SN 12C PRO540 6 Breast Cancer MDA-N, BT-549 PR0542 2 Leukemia SR PR0542 2 Breast Cancer MDA-MB-231/ATCC PR0542 2 Breast Cancer MDA-MB-435 PR0542 2 NSCL EKVX, HOP-92, NCI-H226 PR0542 2 Colon Cancer HCT-1 16, HCT-15 PR0542 2 CNS Cancer SNB-75 PR0542 2 Ovarian Cancer OVCAR-5 PR0542 2 Renal Cancer RXF 393 PR0861 6 Leukemia CCRF-CEM, HL-60(TB) " PR0861 6 Leukemia MOLT-4*, SR PR0861 6 NSCL HOP-92, NCI-H23, NCI-H522 PR0861 6 NSCL NCI-H322M, EKVX PR0861 6 Colon Cancer COLO 205, HCC-2998; HT29 PR0861 6 Colon Cancer KM 12, SW620 * = CYTOTOXIC Table 7 Continued Test compound Davs Tumor Cell Line Type Cell Line Designation PR0861 6 CNS Cancer SF-268; U251 PR0861 6 Melanoma LOX IMVI; SK-MEL-2 PR0861 6 Melanoma SK-MEL-28; UACC-257 PR0861 6 Ovarian Cancer IGROVI; OVCAR-3 PR0861 6 Ovarian Cancer OVCAR-4; OVCAR-8 PR0861 6 Renal Cancer SN 12C PR0861 6 Prostate Cancer PC-3 PR0861 6 Breast Cancer MCF7; MDA-MB-231/ATCC PR0861 6 Breast Cancer MDA-MB-435; MDA-N PR0861 6 Breast Cancer T-47D PR0861 2 Leukemia CCRF-CEM; HL-60(TB); SR PR0861 2 NSCL HOP-92 PR0861 2 Colon Cancer COLO 205; HT29 PR0861 2 Melanoma MALME-3M PR0861 2 Ovarian Cancer OVCAR-5 PR0861 2 Breast Cancer MCF7 PRO 1096 6 Leukemia CCRF-CEM; HL-60(TB)* PRO 1096 6 Leukemia K-562*; MOLT-4 PRO 1096 6 Leukemia RPMI-8226*; SR PRO 1096 6 NSCL A549/ATCC; EKVX; HOP-62* PRO 1096 6 NSCL NCI-H226*; NCI-H322M PRO 1096 6 NSCL NCI-H460*; NCI-H522 PRO1096 6 NSCL HOP-92*; NCI-H23 PRO 1096 6 Colon Cancer COLO 205*; HCC-2998* PRO 1096 6 Colon Cancer HCT-15*; KM12; HT29 PRO 1096 6 Colon Cancer SW620; HCT-116* PRO 1096 6 CNS Cancer SF-295*; U251 ; S-539: SF-268 PRO 1096 6 Melanoma M 14*; MALME-3M* PRO 1096 6 Melanoma SK-MEL-2; LOX IMVI PRO 1096 6 Melanoma SK-MEL-28; SK-MEL-5 PRO 1096 6 Melanoma UACC-257; UACC-62 PRO 1096 6 Ovarian Cancer OVCAR-3*; OVCAR-4* PRO 1096 6 Ovarian Cancer OVCAR-5; SK-OV-3 PRO1096 6 Ovarian Cancer OVCAR-8 PRO 1096 6 Renal Cancer A498; ACHN*; CAKI-1 PRO 1096 6 Renal Cancer RXF 393*; SN 12C; TK-10* PRO 1096 6 Renal Cancer 786-0; UO-31 PRO 1096 6 Prostate Cancer DU-145; PC-3 PRO 1096 6 Breast Cancer MDA-MB-231/ATCC* PRO 1096 6 Breast Cancer MDA-MB-435; MDA-N PRO 1096 6 Breast Cancer BT-549; MCF7; HS 578T PRO 1096 2 Leukemia HL-60(TB)*: K-562* PRO 1096 2 Leukemia RPMI-8226*; SR; MOLT-4 PRO 1096 2 Leukemia CCRP-CEM PRO 1096 2 NSCL A549/ATCC; EKVX: HOP-92* PRO 1096 2 NSCL NCI-H226*; NCI-H322M* PRO 1096 2 NSCL NCI-H460*; NCI-H522 PRO 1096 2 NSCL HOP-62* * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PRO 1096 2 Colon Cancer COLO 205*, HCC-2998* PRO 1096 2 Colon Cancer HCT-15*, HCT-1 16*, KM12 PRO 1096 2 Colon Cancer HT29, SW620 PROl 096 2 CNS Cancer SF-295*, S-539*, U251 PRO 1096 2 Melanoma Ml 4*, MALME-3M* PRO 1096 2 Melanoma SK-MEL-28*, UACC-62 PRO 1096 2 Melanoma SK-MEL-2, LOX IMVI* PROl 096 2 Melanoma SK-MEL-5 PRO 1096 2 Ovarian Cancer OVCAR-3*, OVCAR-4* PRO 1096 2 Ovarian Cancer OVCAR-5*, SK-OV-3* PRO 1096 2 Renal Cancer A498*, ACHN*. CAKI-1 PRO 1096 2 Renal Cancer RXF 393*, SN 12C, TK-10* PRO 1096 2 Renal Cancer UO-31 PRO 1096 2 Prostate Cancer DU-145, PC-3* PRO 1096 2 Breast Cancer MCF7, MDA-MB-231/ATCC* PROl 096 2 Breast Cancer MDA-MB-435. MDA-N PRO 1096 2 Breast Cancer BT-549, HS 578T PROl 096 N/A NSCL A549/ATCC*. EKVX PRO 1096 N/A NSCL HOP-62*, HOP-92*, NCI-H23 PRO 1096 N/A NSCL NCI-H322M*. NCI-H460 PRO 1096 N/A NSCL NCI-H522 PROl 096 N/A Colon Cancer COLO 205, HCT-116* PRO 1096 N/A Colon Cancer HCT-15, HT29*, KM12* PRO 1096 N/A Colon Cancer SW620, HCC-2998* PRO 1096 N/A Breast Cancer HS 578T, MCF7 PRO 1096 N/A Breast Cancer MDA-MB-231/ATCC* PRO 1096 N/A Breast Cancer MDA-MB-435*, MDA-N* PRO 1096 N/A Breast Cancer T-47D PRO1096 N/A Ovarian Cancer OVCAR-3*, OVCAR-4* PRO 1096 N/A Ovarian Cancer OVCAR-5*, SK-OV-3 PRO 1096 N/A Leukemia HL-60(TB), MOLT-4 PRO 1096 N/A Leukemia RPMI-8226 PRO 1096 N/A Renal Cancer A498, ACHN*, RXF 393* PRO 1096 N/A Renal Cancer SN 12C*, TK-10, UO-31 PRO 1096 N/A Renal Cancer CAKI-1 PRO 1096 N/A Melanoma M 14*, MALME-3M PRO 1096 N/A Melanoma SK-MEL-28, SK-MEL-2 PRO 1096 N/A Melanoma UACC-257, UACC-62 PRO 1096 N/A Melanoma LOX IMVI PRO 1096 N/A Prostate Cancer DU-145, PC-3* PRO 1096 N/A CNS Cancer SF-268, SF-295, S-539 PRO 1096 N/A CNS Cancer SNB-75*, U251 * = CYTOTOXIC Table 7 Continued Test compound Days Tumor Cell Line Type Cell Line Designation PR03562 N/A Colon Cancer HCC-2998 PR03562 N/A NSCL HOP-62 PR03562 N/A Ovarian Cancer IGROVI; OVCAR-3 PR03562 N/A Ovarian Cancer OVCAR-8 PR03562 N/A Leukemia MOLT-4 PR03562 N/A CNS Cancer SNB-19 Deposit of Material The following materials have been deposited with the American Type Culture Collection, 10801 University Blvd., Manassas, VA 201 10-2209. USA (ATCC): Material ATCC Dep. No. Deposit Date DNA34387-1 138 209260 September 16, 1997 DNA44194-1317 209808 April 28, 1998 DNA48333-1321 209701 March 26, 1998 DNA44189-1322 209699 March 26, 1998 DNA48320-1433 209904 May 27, 1998 DNA57700-1408 203583 January 12, 1999 DNA57708-141 1 203021 June 23, 1998 DNA57690-1374 209950 June 9, 1998 DNA59777-1480 20311 1 August 1 1 , 1998 DNA60292-1506 203540 December 15, 1998 DNA65351 -1366-1 209856 May 12, 1998 DNA60764-1533 203452 November 10, 1998 DNA64903-1553 203223 September 15, 1998 DNA64966-1575 203575 January 12, 1999 DNA66667 203267 September 22, 1998 DNA67004-1614 2031 15 August 1 1 , 1998 DNA68874-1622 203277 September 22, 1998 DNA73736-1657 203466 November 17, 1998 DNA82364-2538 203603 January 20, 1999 DNA92218-2554 203834 March 9, 1999 DNA87974-2609 203963 April 27, 1999 DNA92265-2669 PTA-256 June 22, 1999 These deposits were made under the provisions of the Budapest Treaty on the International Recognition of the Deposit of Microorganisms for the Puφose of Patent Procedure and the Regulations thereunder (Budapest Treaty) This assures maintenance of a viable culture of the deposit for 30 years from the date of deposit The deposits will be made available by ATCC under the terms of the Budapest Treaty, and subject to an agreement between Genentech, Inc , and ATCC, which assures permanent and unrestricted availability of the progeny of the culture of the deposit to the public upon issuance of the pertinent U S patent or upon la ing open to the public of any U S or foreign patent application, whichever comes first, and assures availability of the progeny to one determined by the U S Commissioner of Patents and Trademarks to be entitled thereto according to 35 U S C § 122 and the Commissioner's rules pursuant thereto (including 37 CFR § 1 14 with particular reference to 886 OG 638) The assignee of the present application has agreed that if a culture of the materials on deposit should die or be lost or destroyed when cultivated under suitable conditions, the materials will be promptly replaced on notification with another of the same Availability of the deposited material is not to be construed as a license to practice the invention in contravention of the rights granted under the authority of any government in accordance with its patent laws The foregoing written specification is considered to be sufficient to enable one skilled in the art to practice the invention The present invention is not to be limited in scope by the construct deposited, since the deposited embodiment is intended as a single illustration of certain aspects of the invention and any constructs that are functionally equivalent are within the scope of this invention The deposit of material herein does not constitute an admission that the written description herein contained is inadequate to enable the practice of any aspect of the invention, including the best mode thereof, nor is it to be construed as limiting the scope of the claims to the specific illustrations that it represents Indeed, various modifications of the invention in addition to those shown and descnbed herein will become apparent to those skilled in the art from the foregoing descnption and fall within the scope of the appended claims

Claims: WHAT IS CLAIMED IS: 1. A composition of matter useful for the inhibition of neoplastic cell growth, said composition comprising an effective amount of a PRO240, PR0381 , PR0534, PRO540, PR0698, PR0982, PRO1005, PRO1007, PROl 131 , PROl 157, PROl 199, PR01265, PR01286, PR01313, PR01338, PR01375, PRO1410, PR01488, PR03438, PRO4302, PRO4400, PR05725, PR0183, PRO202, PR0542, PR0861 , PRO1096 or PR03562 polypeptide, or an agonist thereof, in admixture with a pharmaceutically acceptable carrier. 2. The composition of matter of Claim 1 comprising a growth inhibitory amount of a PRO240. PRO381 , PRO534, PRO540, PRO698, PRO982, PRO1005, PRO1007, PROl 131 , PROl 157, PRO 1 199, PRO 1265, PR01286, PR01313, PR01338, PR01375, PRO1410, PR01488, PR03438. PRO4302, PRO4400, PR05725, PR0183, PRO202, PR0542, PR0861 , PRO1096 or PR03562 polypeptide, or an agonist thereof. 3. The composition of matter of Claim 1 comprising a cytotoxic amount of a PRO240, PR0381 , PR0534, PRO540, PR0698, PR0982, PRO1005, PRO1007, PROl 131 , PROl 157, PROl 199, PR01265, PR01286, PR01313, PR01338, PR01375, PRO1410, PR01488, PR03438, PRO4302, PRO4400, PR05725, PROl 83, PRO202, PR0542, PR0861 , PROl 096 or PR03562 polypeptide, or an agonist thereof. 4. The composition of matter of Claim 1 additionally comprising a further growth inhibitory agent, cytotoxic agent or chemotherapeutic agent. 5. A composition of matter useful for the treatment of a tumor in a mammal, said composition comprising a therapeutically effective amount of a PRO240, PR0381 , PR0534, PRO540, PR0698, PR0982, PRO1005, PRO1007, PROl 131 , PROl 157, PROl 199, PR01265, PR01286, PR01313, PR01338, PR01375, PRO1410, PR01488, PR03438, PRO4302, PRO4400, PR05725, PROl 83, PRO202, PR0542, PR0861 , PRO1096 or PR03562 polypeptide, or an agonist thereof. 6. The composition of matter of Claim 5, wherein said tumor is a cancer. 7. The composition of matter of Claim 6, wherein the cancer is selected from the group consisting of breast cancer, ovarian cancer, renal cancer, colorectal cancer, uterine cancer, prostate cancer, lung cancer, bladder cancer, central nervous system cancer, melanoma and leukemia. 8. A method for inhibiting the growth of a tumor cell comprising exposing said tumor cell to an effective amount of a PRO240, PR0381 , PR0534, PRO540, PR0698, PR0982, PRO 1005, PRO 1007, PRO 1 131 , PR01157, PROl 199, PR01265, PR01286, PR01313, PR01338, PR01375, PRO1410, PR01488, PR03438, PRO4302, PRO4400, PR05725, PROl 83, PRO202, PR0542, PR0861 , PRO 1096 or PR03562 polypeptide, or an agonist thereof. 9. The method of Claim 8, wherein said agonist is an anti-PRO240, anti-PR0381 , anti-PR0534, anti-PRO540, anti-PR0698, anti-PR0982, anti-PRO1005, anti-PRO1007, anti-PROl 131 , anti-PR01 157, anti- PRO 1199, anti-PR01265, anti-PR01286, anti-PR01313, anti-PR01338, anti-PR01375, anti-PRO1410, anti- PRO 1488, anti-PR03438. anti-PRO4302, anti-PRO4400, anti-PR05725, anti-PROl 83, anti-PRO202, anti- PR0542, anti-PR0861 , anti-PRO1096 or anti-PR03562 agonist antibody. 10. The method of Claim 8, wherein said agonist is a small molecule mimicking the biological activity of a PRO240, PR0381 , PR0534, PRO540, PR0698, PR0982, PRO1005, PRO1007, PR01131 , PR01157, PROl 199, PR01265, PR01286, PR01313, PR01338, PR01375, PRO1410, PR01488, PR03438, PRO4302, PRO4400, PR05725, PROl 83, PRO202, PR0542, PR0861 , PRO1096 or PR03562 polypeptide. 1 1. The method of Claim 8, wherein said step of exposing occurs in vitro. 12. The method of Claim 8, wherein said step of exposing occurs in vivo. 13. An article of manufacture comprising: a container; and a composition comprising an active agent contained within the container; wherein said active agent in the composition is a PRO240, PR0381, PR0534, PRO540, PR0698, PR0982, PRO1005, PRO1007, PROl 131 , PROl 157, PROl 199, PR01265, PR01286, PR01313, PR01338, PR01375, PRO1410, PR01488, PR03438, PRO4302, PRO4400, PR05725, PR0183, PRO202, PR0542, PR0861, PRO1096 or PR03562 polypeptide, or an agonist therof. 14. The article of manufacture of Claim 13, further comprising a label affixed to said container, or a package insert included in said container, referring to the use of said composition for the inhibition of neoplastic cell growth. 15. The article of manufacture of Claim 13, wherein said agonist is an anti-PRO240, anti-PR0381 , anti-PR0534, anti-PRO540, anti-PR0698, anti-PR0982, anti-PRO1005, anti-PRO1007, anti-PROl 131 , anti- PROl 157, anti-PROl 199, anti-PR01265, anti-PR01286, anti-PR01313, anti-PR01338, anti-PR01375, anti- PRO1410, anti-PR01488, anti-PR03438, anti-PRO4302, anti-PRO4400, anti-PR05725, anti-PROl 83, anti- PRO202, anti-PR0542, anti-PR0861, anti-PRO1096 or anti-PR03562 agonist antibody. 16. The article of manufacture of Claim 13, wherein said agonist is a small molecule mimicking the biological activity of a PRO240, PR0381 , PR0534, PRO540, PR0698, PR0982, PRO 1005, PROl 007, PROl 131 , PROl 157, PRO! 199, PR01265, PR01286, PR01313, PR01338, PR01375, PRO1410, PR01488, PR03438, PRO4302, PRO4400, PR05725, PR0183, PRO202, PR0542, PR0861 , PRO 1096 or PR03562 polypeptide. 17 The article of manufacture of Claim 13 wherein said active agent is present in an amount that is effective for the treatment of tumor in a mammal 18 The article of manufacture of Claim 13, wherein said composition additionally comprises a further growth inhibitory agent, cytotoxic agent or chemotherapeutic agent 19 Isolated nucleic acid having at least 80% nucleic acid sequence identity to a nucleotide sequence that encodes an amino acid sequence selected from the group consisting of the amino acid sequence shown in Figure 2 (SEQ ID NO 2), Figure 4 (SEQ ID NO 4), Figure 6 (SEQ ID NO 6), Figure 8 (SEQ ID NO 8), Figure 10 (SEQ ID NO 10), Figure 12 (SEQ ID NO 12), Figure 14 (SEQ ID NO 14), Figure 16 (SEQ ID NO 16), Figure 18 (SEQ ID NO 18) Figure 20 (SEQ ID NO 20), Figure 22 (SEQ ID NO 22), Figure 24 (SEQ ID NO 24), Figure 26 (SEQ ID NO 26), Figure 28 (SEQ ID NO 28), Figure 30 (SEQ ID NO 30), Figure 32 (SEQ ID NO 32), Figure 34 (SEQ ID NO 34), Figure 36 (SEQ ID NO 36), Figure 38 (SEQ ID NO 38), Figure 40 (SEQ ID NO 40), Figure 42 (SEQ ID NO 42), Figure 44 (SEQ ID NO 44), Figure 46 (SEQ ID NO 46), Figure 48 (SEQ ID NO 48), Figure 50 (SEQ ID NO 50), Figure 52 (SEQ ID NO 52), Figure 54 (SEQ ID NO 54), and Figure 56 (SEQ ID NO 56) 20 Isolated nucleic acid having at least 80% nucleic acid sequence identity to a nucleotide sequence selected from the group consisting of the nucleotide sequence shown in Figure 1 (SEQ ID NO 1), Figure 3 (SEQ ID NO 3), Figure 5 (SEQ ID NO 5), Figure 7 (SEQ ID NO 7), Figure 9 (SEQ ID NO 9), Figure 11 (SEQ ID NO 11), Figure 13 (SEQ ID NO 13), Figure 15 (SEQ ID NO 15), Figure 17 (SEQ ID NO 17), Figure 19 (SEQ ID NO 19), Figure 21 (SEQ ID NO 21 ), Figure 23 (SEQ ID NO 23), Figure 25 (SEQ ID NO 25), Figure 27 (SEQ ID NO 27), Figure 29 (SEQ ID NO 29), Figure 31 (SEQ ID NO 31 ), Figure 33 (SEQ ID NO 33), Figure 35 (SEQ ID NO 35), Figure 37 (SEQ ID NO 37), Figure 39 (SEQ ID NO 39), Figure 41 (SEQ ID NO 41), Figure 43 (SEQ ID NO 43), Figure 45 (SEQ ID NO 45), Figure 47 (SEQ ID NO 47), Figure 49 (SEQ ID NO 49), Figure 51 (SEQ ID NO 51), Figure 53 (SEQ ID NO 53), and Figure 55 (SEQ ID NO 55) 21 Isolated nucleic acid having at least 80% nucleic acid sequence identity to a nucleotide sequence selected from the group consisting of the full-length coding sequence of the nucleotide sequence shown in Figure 1 (SEQ ID NO 1 ), Figure 3 (SEQ ID NO 3), Figure 5 (SEQ ID NO 5), Figure 7 (SEQ ID NO 7), Figure 9 (SEQ ID NO 9), Figure 1 1 (SEQ ID NO 1 1 ), Figure 13 (SEQ ID NO 13), Figure 15 (SEQ ID NO 15), Figure 17 (SEQ ID NO 17), Figure 19 (SEQ ID NO 19), Figure 21 (SEQ ID NO 21 ), Figure 23 (SEQ ID NO 23), Figure 25 (SEQ ID NO 25), Figure 27 (SEQ ID NO 27), Figure 29 (SEQ ID NO 29), Figure 31 (SEQ ID NO 31 ), Figure 33 (SEQ ID NO 33), Figure 35 (SEQ ID NO 35), Figure 37 (SEQ ID NO 37), Figure 39 (SEQ ID NO 39), Figure 41 (SEQ ID NO 41), Figure 43 (SEQ ID NO 43), Figure 45 (SEQ ID NO 45), Figure 47 (SEQ ID NO 47), Figure 49 (SEQ ID NO 49), Figure 51 (SEQ ID NO 51 ), Figure 53 (SEQ ID NO 53), and Figure 55 (SEQ ID NO 55) 22 Isolated nucleic acid having at least 80% nucleic acid sequence identity to the full-length coding sequence of the DNA deposited under ATCC accession number 209260, 209808, 209701 , 209699, 209904, 203583, 203021 , 209950 2031 1 1 203540, 209856, 203452, 203223, 203575 203267. 2031 15, 203277, 203466, 203603, 203834 203963 or PTA-256 23 A vector comprising the nucleic acid of any one of Claims 19 to 22 24 The vector of Claim 23 operably linked to control sequences recognized by a host cell transformed with the vector 25 A host cell comprising the vector of Claim 23 26 The host cell of Claim 25, wherein said cell is a CHO cell 27 The host cell of Claim 25, wherein said cell is an E coli 28 The host cell of Claim 25, wherein said cell is a yeast cell 29 The host cell of Claim 25, wherein said cell is a Baculovirus-infected insect cell 30 A process for producing a PRO240, PR0381, PR0534, PRO540, PR0698, PR0982, PRO 1005, PRO1007, PROl 131, PROl 157, PROl 199, PR01265, PR01286, PR01313, PR01338, PR01375, PRO1410, PR01488, PR03438, PRO4302, PRO4400, PR05725, PR0183, PRO202, PR0542, PR0861 , PRO1096 or PR03562 polypeptide comprising culturing the host cell of Claim 25 under conditions suitable for expression of said polypeptide and recovering said polypeptide from the cell culture 31 An isolated polypeptide having at least 80% amino acid sequence identity to an amino acid sequence selected from the group consisting of the amino acid sequence shown in Figure 2 (SEQ ID NO 2), Figure 4 (SEQ ID NO 4), Figure 6 (SEQ ID NO 6), Figure 8 (SEQ ID NO 8), Figure 10 (SEQ ID NO 10), Figure 12 (SEQ ID NO 12), Figure 14 (SEQ ID NO 14), Figure 16 (SEQ ID NO 16), Figure 18 (SEQ ID NO 18), Figure 20 (SEQ ID NO 20), Figure 22 (SEQ ID NO 22), Figure 24 (SEQ ID NO 24), Figure 26 (SEQ ID NO 26), Figure 28 (SEQ ID NO 28), Figure 30 (SEQ ID NO 30), Figure 32 (SEQ ID NO 32), Figure 34 (SEQ ID NO 34), Figure 36 (SEQ ID NO 36), Figure 38 (SEQ ID NO 38), Figure 40 (SEQ ID NO 40), Figure 42 (SEQ ID NO 42), Figure 44 (SEQ ID NO 44), Figure 46 (SEQ ID NO 46), Figure 48 (SEQ ID NO 48), Figure 50 (SEQ ID NO 50), Figure 52 (SEQ ID NO 52), Figure 54 (SEQ ID NO 54), and Figure 56 (SEQ ID NO 56) 32 An isolated polypeptide scoring at least 80% positives when compared to an amino acid sequence selected from the group consisting of the amino acid sequence shown in Figure 2 (SEQ ID NO 2), Figure 4 (SEQ ID NO 4), Figure 6 (SEQ ID NO 6), Figure 8 (SEQ ID NO 8), Figure 10 (SEQ ID NO 10), Figure 12 (SEQ ID NO 12), Figure 14 (SEQ ID NO 14), Figure 16 (SEQ ID NO 16), Figure 18 (SEQ ID NO 18), Figure 20 (SEQ ID NO 20), Figure 22 (SEQ ID NO 22), Figure 24 (SEQ ID NO 24), Figure 26 (SEQ ID NO 26), Figure 28 (SEQ ID NO 28). Figure 30 (SEQ ID NO 30), Figure 32 (SEQ ID NO 32), Figure 34 (SEQ ID NO 34), Figure 36 (SEQ ID NO 36) Figure 38 (SEQ ID NO 38), Figure 40 (SEQ ID NO 40), Figure 42 (SEQ ID NO 42), Figure 44 (SEQ ID NO 44), Figure 46 (SEQ ID NO 46), Figure 48 (SEQ ID NO 48), Figure 50 (SEQ ID NO 50), Figure 52 (SEQ ID NO 52), Figure 54 (SEQ ID NO 54), and Figure 56 (SEQ ID NO 56) 33 An isolated polypeptide having at least 80% amino acid sequence identity to an amino acid sequence encoded by the full-length coding sequence of the DNA deposited under ATCC accession number 209260, 209808, 209701 , 209699, 209904, 203583, 203021, 209950, 2031 1 1 , 203540, 209856, 203452, 203223, 203575, 203267, 2031 15, 203277, 203466, 203603, 203834, 203963 or PTA-256 34 A chimeric molecule comprising a polypeptide according to any one of Claims 31 to 33 fused to a heterologous amino acid sequence 35 The chimeric molecule of Claim 34, wherein said heterologous amino acid sequence is an epitope tag sequence 36 The chimeric molecule of Claim 34, wherein said heterologous amino acid sequence is a Fc region of an lmmunoglobulin 37 An antibody which specifically binds to a polypeptide according to any one of Claims 31 to 33 38 The antibody of Claim 37, wherein said antibody is a monoclonal antibody, a humanized antibody or a single-chain antibody 39 Isolated nucleic acid having at least 80% nucleic acid sequence identity to (a) a nucleotide sequence encoding the polypeptide shown in Figure 2 (SEQ ID NO 2), Figure 4 (SEQ ID NO 4), Figure 6 (SEQ ID NO 6), Figure 8 (SEQ ID NO 8), Figure 10 (SEQ ID NO 10), Figure 12 (SEQ ID NO 12), Figure 14 (SEQ ID NO 14), Figure 16 (SEQ ID NO 16), Figure 18 (SEQ ID NO 18), Figure 20 (SEQ ID NO 20), Figure 22 (SEQ ID NO 22), Figure 24 (SEQ ID NO 24), Figure 26 (SEQ ID NO 26), Figure 28 (SEQ ID NO 28), Figure 30 (SEQ ID NO 30), Figure 32 (SEQ ID NO 32), Figure 34 (SEQ ID NO 34), Figure 36 (SEQ ID NO 36), Figure 38 (SEQ ID NO 38), Figure 40 (SEQ ID NO 40), Figure 42 (SEQ ID NO 42), Figure 44 (SEQ ID NO 44), Figure 46 (SEQ ID NO 46), Figure 48 (SEQ ID NO 48), Figure 50 (SEQ ID NO 50), Figure 52 (SEQ ID NO 52), Figure 54 (SEQ ID NO 54), or Figure 56 (SEQ ID NO 56), lacking its associated signal peptide (b) a nucleotide sequence encoding an extracellular domain of the polypeptide shown in Figure 2 (SEQ ID NO 2), Figure 4 (SEQ ID NO 4), Figure 6 (SEQ ID NO 6), Figure 8 (SEQ ID NO 8), Figure 10 (SEQ ID NO 10), Figure 12 (SEQ ID NO 12), Figure 14 (SEQ ID NO 14), Figure 16 (SEQ ID NO 16), Figure 18 (SEQ ID NO 18), Figure 20 (SEQ ID NO 20), Figure 22 (SEQ ID NO 22), Figure 24 (SEQ ID NO 24), Figure 26 (SEQ ID NO 26), Figure 28 (SEQ ID NO 28), Figure 30 (SEQ ID NO 30), Figure 32 (SEQ ID NO 32), Figure 34 (SEQ ID NO 34), Figure 36 (SEQ ID NO 36), Figure 38 (SEQ ID NO 38), Figure 40 (SEQ ID NO 40), Figure 42 (SEQ ID NO 42), Figure 44 (SEQ ID NO 44), Figure 46 (SEQ ID NO 46), Figure 48 (SEQ ID NO 48), Figure 50 (SEQ ID NO 50), Figure 52 (SEQ ID NO 52), Figure 54 (SEQ ID NO 54), or Figure 56 (SEQ ID NO 56), with its associated signal peptide, or (c) a nucleotide sequence encoding an extracellular domain of the polypeptide shown in Figure 2 (SEQ ID NO 2), Figure 4 (SEQ ID NO 4), Figure 6 (SEQ ID NO 6), Figure 8 (SEQ ID NO 8), Figure 10 (SEQ ID NO 10), Figure 12 (SEQ ID NO 12), Figure 14 (SEQ ID NO 14), Figure 16 (SEQ ID NO 16), Figure 18 (SEQ ID NO 18), Figure 20 (SEQ ID NO 20), Figure 22 (SEQ ID NO 22), Figure 24 (SEQ ID NO 24), Figure 26 (SEQ ID NO 26), Figure 28 (SEQ ID NO 28), Figure 30 (SEQ ID NO 30), Figure 32 (SEQ ID NO 32), Figure 34 (SEQ ID NO 34), Figure 36 (SEQ ID NO 36), Figure 38 (SEQ ID NO 38), Figure 40 (SEQ ID NO 40), Figure 42 (SEQ ID NO 42), Figure 44 (SEQ ID NO 44), Figure 46 (SEQ ID NO 46), Figure 48 (SEQ ID NO 48), Figure 50 (SEQ ID NO 50), Figure 52 (SEQ ID NO 52), Figure 54 (SEQ ID NO 54), or Figure 56 (SEQ ID NO 56), lacking its associated signal peptide 40 An isolated polypeptide having at least 80% amino acid sequence identity to (a) the polypeptide shown in Figure 2 (SEQ ID NO 2), Figure 4 (SEQ ID NO 4), Figure 6 (SEQ ID NO 6), Figure 8 (SEQ ID NO 8), Figure 10 (SEQ ID NO 10), Figure 12 (SEQ ID NO 12), Figure 14 (SEQ ID NO 14), Figure 16 (SEQ ID NO 16), Figure 18 (SEQ ID NO 18), Figure 20 (SEQ ID NO 20), Figure 22 (SEQ ID NO 22), Figure 24 (SEQ ID NO 24), Figure 26 (SEQ ID NO 26), Figure 28 (SEQ ID NO 28), Figure 30 (SEQ ID NO 30), Figure 32 (SEQ ID NO 32), Figure 34 (SEQ ID NO 34), Figure 36 (SEQ ID NO 36), Figure 38 (SEQ ID O 38), Figure 40 (SEQ ID NO 40), Figure 42 (SEQ ID NO 42), Figure 44 (SEQ ID NO 44), Figure 46 (SEQ ID O 46), Figure 48 (SEQ ID NO 48), Figure 50 (SEQ ID NO 50), Figure 52 (SEQ ID NO 52), Figure 54 (SEQ ID O 54), or Figure 56 (SEQ ID NO 56), lacking its associated signal peptide, (b) an extracellular domain of the polypeptide shown in Figure 2 (SEQ ID NO 2), Figure 4 (SEQ ID O 4), Figure 6 (SEQ ID NO 6), Figure 8 (SEQ ID NO 8), Figure 10 (SEQ ID NO 10), Figure 12 (SEQ ID O 12), Figure 14 (SEQ ID NO 14), Figure 16 (SEQ ID NO 16), Figure 18 (SEQ ID NO 18), Figure 20 (SEQ ID O 20), Figure 22 (SEQ ID NO 22), Figure 24 (SEQ ID NO 24), Figure 26 (SEQ ID NO 26), Figure 28 (SEQ ID O 28), Figure 30 (SEQ ID NO 30), Figure 32 (SEQ ID NO 32), Figure 34 (SEQ ID NO 34), Figure 36 (SEQ ID O 36), Figure 38 (SEQ ID NO 38), Figure 40 (SEQ ID NO 40), Figure 42 (SEQ ID NO 42), Figure 44 (SEQ ID O 44), Figure 46 (SEQ ID NO 46), Figure 48 (SEQ ID NO 48), Figure 50 (SEQ ID NO 50), Figure 52 (SEQ ID O 52), Figure 54 (SEQ ID NO 54), or Figure 56 (SEQ ID NO 56), with its associated signal peptide, or (c) an extracellular domain of the polypeptide shown in Figure 2 (SEQ ID NO 2), Figure 4 (SEQ ID O 4), Figure 6 (SEQ ID NO 6), Figure 8 (SEQ ID NO 8), Figure 10 (SEQ ID NO 10), Figure 12 (SEQ ID O 12), Figure 14 (SEQ ID NO 14), Figure 16 (SEQ ID NO 16), Figure 18 (SEQ ID NO 18), Figure 20 (SEQ ID O 20), Figure 22 (SEQ ID NO 22), Figure 24 (SEQ ID NO 24), Figure 26 (SEQ ID NO 26), Figure 28 (SEQ ID O 28), Figure 30 (SEQ ID NO 30), Figure 32 (SEQ ID NO 32), Figure 34 (SEQ ID NO 34), Figure 36 (SEQ ID O 36), Figure 38 (SEQ ID NO 38), Figure 40 (SEQ ID NO 40), Figure 42 (SEQ ID NO 42), Figure 44 (SEQ ID NO:44), Figure 46 (SEQ ID NO:46), Figure 48 (SEQ ID NO:48), Figure 50 (SEQ ID NO:50), Figure 52 (SEQ ID NO:52), Figure 54 (SEQ ID NO:54), or Figure 56 (SEQ ID NO:56). lacking its associated signal peptide.

Inventors: BAKER KEVIN P, GODDARD AUDREY, GURNEY AUSTIN L, HEBERT CAROLINE, HENZEL WILLIAM, KABAKOFF RHONA C, SHELTON DAVID L, SMITH VICTORIA, WATANABE COLIN K, WOOD WILLIAM I, BAKER, KEVIN, P., GODDARD, AUDREY, GURNEY, AUSTIN, L., HEBERT, CAROLINE, HENZEL, WILLIAM, KABAKOFF, RHONA, C., SHELTON, DAVID, L., SMITH, VICTORIA, WATANABE, COLIN, K., WOOD, WILLIAM, I.
Applicants: BAKER KEVIN P, GENENTECH INC, GODDARD AUDREY, GURNEY AUSTIN L, HEBERT CAROLINE, HENZEL WILLIAM, KABAKOFF RHONA C, SHELTON DAVID L, SMITH VICTORIA, WATANABE COLIN K, WOOD WILLIAM I, BAKER, KEVIN, P., GENENTECH, INC., GODDARD, AUDREY, GURNEY, AUSTIN, L., HEBERT, CAROLINE, HENZEL, WILLIAM, KABAKOFF, RHONA, C., SHELTON, DAVID, L., SMITH, VICTORIA, WATANABE, COLIN, K., WOOD, WILLIAM, I.
Application year: 2000
Main classification: C07K16
IPC codes: C07K14, C12N15