MAMMALIAN SEX COMB ON MIDLEG (MAMMALIAN SCM) ACTS AS A TUMOR SUPPRESSOR

Abstract: Mammalian Scm gene and amino acid sequences encoded by the mammalian Scm gene are described. The mammalian Scm gene and gene products are useful for diagnostic and therapeutic applications in proliferative and developmental disorders. Modulators of mammalian Scm can be identified using the disclosed genes. The modulators can be used in the context of cancer therapy or a treatment of a developmental disorder. Scm is also useful for inducing differentiation in a population of progenitor cells.

Description: MAMMALIAN SEX COMB ON MIDLEG (mammalian San) ACTS AS A TUMOR SUPPRESSOR Fjp.lrl r>f thg Tnvgnrinn The invention relates to a gene, mammalian sex comb on midleg (mammalian Son), implicated in proliferative disorders, including malignancies, and in developmental processes. Rat* grniinfl nf the Tnveπfinn Cancer and malignancy therapies have included treatment with chemical toxins, radiation, and surgery. Genes known to be over-expressed or underexpressed in cancer are used for diagnosis of the disease and evaluation of a patient's progression with the disease and treatment. The study of transcription has provided information about cell differentiation: early in the development of a cell lineage, transcription factors direct development along a particular pathway by activating genes of a differentiated phenotype. Differentiation can involve not only changes in patterns of expressed genes, but also involve the maintenance of those new patterns. The genetic basis of mammalian development, and the genetic link between development and cancer has not been fully elucidated. There is a need in the art for knowledge of the key genes underlying mammalian cancer, particularly those also implicated in normal mammalian developmental processes. Summary nf thp Tnvpnrinn In one embodiment of the invention an isolated mammalian Sem (mammalian Sem) polypeptide is provided. The polypeptide comprises a sequence of at least 54 consecutive amino acids of a sequence selected from the group consisting of SEQ ID NO. 2, SEQ ID NO.4, and SEQ ID NO. 6. In another embodiment of the invention an isolated nucleic acid molecule is provided. The nucleic acid molecule encodes a polypeptide having a sequence selected from the group consisting of SEQ ID NO. 2, SEQ ID NO.4, and SEQ ID NO. 6. According to yet another embodiment, an isolated nucleic acid molecule is provided which comprises at least 30 contiguous nucleotides selected from the group of sequences consisting of SEQ ID NO: 1, SEQ ID NO:3, AND SEQ ID NO: 5. In another embodiment of the invention, an antibody preparation is provided. The antibodies specifically bind to an mammalian Sem polypeptide, and do not bind specifically to other mammalian proteins. In still another embodiment, a method of treating a neoplasm is provided. The method comprises: contacting a neoplasm with an effective amount of a therapeutic agent comprising a mammalian Sem polypeptide which comprises a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6, whereby growth of the neoplasm is arrested. In still another embodiment of the invention a method of inducing cell differentiation is provided. The method comprises: contacting a progenitor cell with a human Sem (hScm) polypeptide which comprises a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6, whereby differentiation of the cell is induced. According to yet another embodiment of the invention a method of regulating cell growth is provided. The method comprises: contacting a cell whose growth is uncontrolled with a human Sem (hScm) polypeptide which comprises a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6, whereby growth of the cell is regulated. According to yet another aspect of the invention a pharmaceutical composition is provided. The composition comprises an effective amount of a therapeutic agent comprising a mammalian Sem polypeptide which comprises a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6, and a pharmaceutically acceptable carrier. Another aspect of the invention is a method of diagnosing neoplasia. The method comprises: contacting (a) a tissue sample suspected of neoplasia isolated from a patient with (b) an mammalian Sem gene probe comprising at least 12 nucleotides of a sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 3, and SEQ ID NO: 5, wherein a tissue which underexpresses mammalian Sem or expresses a variant mammalian Sem is categorized as neoplastic. According to another embodiment of the invention a method of diagnosing neoplasia is provided. The method comprises: contacting PCR primers which specifically hybridize with an mammalian Sem gene sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 3, and SEQ ID NO: 5, with nucleic acids isolated from a tissue suspected of neoplasia; amplifying mammalian Son sequences in the nucleic acids of the tissue; and detecting a mutation in the amplified sequence, wherein a mutation is identified when the amplified sequence differs from a sequence similarly amplified from a normal human tissue. In yet another embodiment of the invention a method of diagnosing neoplasia is provided. The method comprises: contacting a bDNA probe with nucleic acids isolated from a tissue suspected of neoplasia, wherein the bDNA probe specifically hybridizes with an mammalian Son gene sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 3, and SEQ ID NO: 5; detecting hybrids formed between the bDNA probe and nucleic acids isolated from the tissue; and identifying a mutation in the nucleic acids isolated from the tissue by comparing the hybrids formed with hybrids similarly formed using nucleic acids from a normal human tissue. According to still another aspect of the invention a method of diagnosing neoplasia is provided. The method comprises: contacting a tissue sample suspected of being neoplastic with an antibody selected from the group consisting of: one which specifically binds to wild-type mammalian Sem as shown in SEQ ID NO:2, 4, or 6, or one which specifically binds to an expressed mammalian Sem variant; detecting binding of the antibody to components of the tissue sample, wherein a difference in the binding of the antibody to components of the tissue sample, as compared to binding of the antibody to a normal human tissue sample indicates neoplasia of the tissue. Another aspect of the invention is yet another method of diagnosing neoplasia. The method comprises: contacting RNA from a tissue suspected of being neoplastic with PCR primers which specifically hybridize to an mammalian Sem gene sequence as shown in SEQ ID NO: 1, 3, or 5, or a bDNA probe which specifically hybridizes to said sequence; determining quantitative levels of mammalian Sem RNA in the tissue by PCR amplification or bDNA probe detection, wherein lower levels of mammalian Sem RNA as compared to a normal human tissue indicate neoplasia. Also provided are nucleic acid molecules which can be used in regulating a heterologous coding sequence coordinately with hScm. These sequences include the 5' untranslated region of an hScm gene, the 3' untranslated region of an hScm gene, the promoter region of an hScm gene, and an intron of an hScm gene. Also provided by the present invention is a method of identifying modulators of hScm function comprising: contacting a test substance with a human cell which comprises an hScm gene or a reporter construct comprising an hScm promoter and a reporter gene; quantitating transcription of hScm or the reporter gene in the presence and absence of the test substance, wherein a test substance which increases transcription is a candidate drug for anti-neoplastic therapy. According to another embodiment a method of diagnosis of neoplasia is provided. The method comprises: contacting a tissue sample suspected of neoplasia isolated from a patient with an mammalian Sem gene probe comprising at least 12 contiguous nucleotides of a sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 3, and SEQ ID NO: 5, wherein a tissue which overexpresses mammalian Sem or expresses a variant mammalian Sem is categorized as neoplastic. In still another aspect of the invention a method of dysregulating cell growth is provided. The method comprises: contacting a cell whose growth is controlled with a mammalian Sem polypeptide which comprises a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6, whereby growth of the cell is dysregulated. According to still another aspect of the invention a method of diagnosing neoplasia is provided. The method comprises: contacting RNA from a tissue suspected of being neoplastic with PCR primers which specifically hybridize to an mammalian Sem gene sequence as shown in SEQ ID NO: 1, 3, or 5, or a bDNA probe which specifically hybridizes to said sequence; determining quantitative levels of mammalian Sem RNA in the tissue by PCR amplification or bDNA probe detection, wherein higher levels of mammalian Sem RNA as compared to a normal human tissue indicates neoplasia. Also provided are nucleic acid molecules which can be used in regulating a heterologous coding sequence coordinately with mammalian Sem. These sequences include the 5' untranslated region of an mammalian Sem gene, the 3' untranslated region of an mammalian Sem gene, the promoter region of an mammalian San gene, and an intron of an mammalian Sem gene. Also provided by the present invention is a method of identifying modulators of mammalian Sem function comprising: contacting a mammalian cell which comprises an mammalian Sem gene or a reporter construct comprising an mammalian Sem promoter and a reporter gene with a test substance; quantitating transcription of mammalian Sem or the reporter gene in the presence and absence of the test substance, wherein a test substance which decreases transcription is a candidate drug for anti-neoplastic therapy. Dptflileii TtesTTiprinn The inventors have discovered a gene, the mammalian sex comb on midleg (mammalian Sem), that operates to regulate protein expression in mammals, particularly humans. Mammalian Sem may operate by controlling homeotic gene expression. Although the invention is not limited by any theory or mechamsm of how the invention works, it is believed that control by this gene involves multiprotein complexes capable of negative regulation of transcription. The polypeptides of the invention, include the splice variant polypeptides of SEQ ID NO: 2, SEQ ID NO: 4, and SEQ ID NO: 6, which contain different domains of the mammalian Sem gene. The nucleic acid molecules (SEQ ID NO: 1, SEQ ID NO: 3, and SEQ ID NO: 5) encoding the mammalian Sem polypeptides have been cloned from human cells. The polynucleotide of SEQ ID NO: 1 encodes the polypeptide of SEQ ID NO: 2, the polynucleotide of SEQ ID NO: 3 encodes the polypeptide of SEQ ID NO: 4, and the polynucleotide of SEQ ID NO: 5 encodes the polypeptide of SEQ ID NO: 6. Polypeptides comprising at least 6, 10, 20, 30, 40, 50, 54, 60, 65, or 75 amino acids of mammalian Sem are useful as immunogens for raising antibodies and as competitors in immunoassays. They can also be used to purify antibodies. Nucleic acid molecules of at least 15, 20, 30, 40, or 50 contiguous nucleotides are useful as probes for use in diagnostic assays. Both human and murine Sem, and their coding sequences, are provided herein. There is a striking sequence conservation between murine and human Sem. They are 99% similar at the nucleotide level, and 97% identical at the amino acid level. The proline at position 20 in hScm is substituted with a serine, and the tyrosine at position 59 in hScm is substituted with a phenylalanine. Other mammalian Sem proteins and genes can be obtained by screening of cDNA libraries of a mammalian species with a probe derived from the murine or human sequences. Such techniques are well known in the art, and can be employed by those of skill in the art. The domains of mammalian Sem protein which appear to be most conserved are those found in the following locations in each of the isoforms of the human proteins. In isoform 1 (amino acid SEQ ID NO: 4), the conserved domains are at aa 1 to 80, aa 93 to 128, aa 135 to 142, aa 144 to 166, and aa 527 to 565. In addition W the following short segments appear to be well conserved, although they are short: aa 170 to 177, aa 261 to 266, and aa 460 to 467. In isoform 2 (amino acid SEQ ID NO: 6) the conserved domains are: aa 201 to 287, aa 311 to 336, aa 345 to 373, aa 550 to 589, aa 625 to 710, aa 823 to 894, aa 940 to 984, and aa 2170 to 2210. In addition 5 these shorter regions are indicated as conserved: aa 446 to 452, and aa 506 to 511. In isoform 3 (amino acid SEQ ID NO: 2) the domains which appear to be well conserved are: aa 36 to 85, aa 6 to 120, aa 146 to 171, aa 186 to 208, and aa 570 to 608. Regions of conservation are likely functionally important regions which one wants to retain when constructing modifications. In addition, these are most useful in 10 obtaining other species and isoforms of Sem. The human Sem gene has been mapped to chromosome lp34. This was accomplished by FISH mapping. Intriguingly, loss of heterozygosity (LOH) for well differentiated gastric cancer and for colon cancer map to this region. Mammalian Sem is implicated in development, by contributing to the 15 activation or repression of certain genes during development. Thus mammalian Sem can be used therapeutically to change the gene expression pattern and thus the phenotype of a cell. Thus, for example, mammalian Sem can be used to direct differentiation of a progenitor cell. Similarly, inhibition of mammalian Sem will direct a differentiated cell to become less differentiated, i.e., to alter its pattern of gene 20 expression. Proliferative indications for which an mammalian Scm-based therapeutic agent can be used include, restinosis, benign prostatic hyperplasia, uterine fibroids, retinopathy, psoriasis, keloids, arthritis, wound healing, and premalignant lesions including for example, intestinal polyps, cervical dysplasia, and myeloid dysplasia. 25 Neoplasias that may be treatable with an mammalian Scm-based therapeutic agent, include, but are not limited to, lung carcinoma, colorectal adenocarcinoma, leukemia, Buriάtt's lymphoma and melanoma. The coding region of mammalian Sem can be used for expression of mammalian Sem and for development of mammalian Sem variants for therapeutic 30 applications. Mammalian Sem coding sequence can be used as a probe for diagnosis of disease or biological disorder where overexpression of mammalian Sem occurs, such as, for example, in cancers such as lung carcinoma, colorectal adenocarcinoma, lymphatic cancer, promyelocytic leukemia, Burkitt's lymphoma, and myeloma. The 5' untranslated and 3' untranslated regions of mammalian Sem can also be used diagnostically to the same effect as the mammalian Sem coding sequence, for example, the 5' untranslated region can be isolated and used to probe tissue, for example, lung tissue, where lung carcinoma is suspected. Because mammalian Sem has been shown to be upregulated in lung carcinoma, probing with any portion of the mammalian Sem gene can identify the upregulation of mammalian Sem in the tissue, as an aid to making a diagnosis. Such diagnostic probes may also be used for continued monitoring of a diagnosed patient, for signs of improvement after and during treatment, and for indications of progression of the disease. Mammalian Sem genes can be cloned and isolated by probing genomic DNA with the coding region of mammalian Sem, or by probing genomic DNA with any probe-length piece (at least 12 nucleotides) of mammalian Sem DNA. A PI clone of genomic DNA containing hScm (Human Genome Sciences #11267, CMCC #4737) has been deposited at the American Type Culture Collection, Rockville, MD. The genomic DNA can be subcloned into a cloning vector, for example a cosmid vector, for sequencing and assembly of the entire gene sequence. The promoter region of mammalian Sem is useful for expression of mammalian Sem in a gene therapy protocol, and for further analysis of mammalian Sem gene function and regulatory control. Knowledge of promoter region sequences specific for binding transcriptional activators that activate the mammalian Sem promoter can facilitate improved expression of mammalian Sem for therapeutic purposes. The mammalian Sem promoter region may be useful for tissue specific expression of heterologous genes, such as, for treatment of lung carcinoma or colorectal adenocarcinoma. The region immediately 5' of the coding region of mammalian Sem can be used, for example, as a diagnostic probe for cancer or a developmental disorder associated with aberrant mammalian Sem activity. The full length gene, or such non-coding regions of it as the promoter and the 5' or 3' untranslated regions can be isolated by probing genomic DNA with a probe comprising at least about 12 nucleotides of mammalian Sem cDNA, and retrieving a genomic sequence that hybridizes to one of these sequences. The 5' untranslated end and the promoter regions, for example, can be cloned by PCR cloning with random oligonucleotide and a 5' portion of the known coding sequence. The polypeptides of the invention can further be used to generate monoclonal or polyclonal antibodies. Monoclonal antibodies, are prepared using the method of Kohler and Milstein, as described in Nature (1975) 256: 495-96, or a modification thereof. Antibodies to mammalian Sem, either polyclonal or monoclonal, can be used therapeutically. They are desirably compatible with the host to be treated. For example, for treatment of humans, the antibodies can be human monoclonal antibodies or humanized antibodies, as the term is generally known in the art. Alternatively, single chain antibodies may be used for therapy. Antibodies may act to antagonize or inhibit the polypeptide activity of mammalian Sem, and are also useful in diagnosing a condition characterized by mammalian Sem expression or over- expression, such as, for example, a malignancy condition. Similarly, underexpression can be detected using such antibodies bind specifically to mammalian Sem but not to other human proteins. More preferred is the situation where the antibodies are human species mammalian Scm-specific. Expression of mammalian Sem can be accomplished by any expression system appropriate for the purpose and conditions presented. Some exemplary expression systems are listed below. Where mammalian Sem itself is used as a therapeutic, the polypeptide can be expressed and subsequently administered to a patient. Alternatively a gene encoding at least a functional portion of mammalian Sem can be administered to a patient for expression in the patient. Recombinant mammalian Sem may be used as a reagent for diagnostic methods for diagnosis of cancer or a developmental disorder. It may also be used as a therapeutic for inducing differentiation in a population of progenitor cells. Recombinant mammalian Sem can also be used to develop modulators of mammalian Sem for achieving a desired therapeutic effect. Construction and expression of any of the recombinant molecules of the invention can be accomplished by any expression system most appropriate for the task, including, for example, an expression system described below. Expression Systems Although the methodology described below is believed to contain sufficient details to enable one skilled in the art to practice the present invention, other constructs can be constructed and purified using standard recombinant DNA techniques as described in, for example, Sambrook et al. (1989), MOLECULAR CLONING: A LABORATORY MANUAL, 2nd ed. (Cold Spring Harbor Press, Cold Spring Harbor, New York); and under current regulations described in United States Dept. of Health and Human Services , National Institutes of Health (NIH) Guidelines for Recombinant DNA Research. The polypeptides of the invention can be expressed in any expression system, including, for example, bacterial, yeast, insect, amphibian and mammalian systems. Expression systems in bacteria include those described in Chang et al., Nature (1978) 275: 615, Goeddel et al , Nature (1979) 281: 544, Goeddel et al, Nucleic Acids Res. (1980) 8: 4057, EP 36,776, U.S. 4,551,433, deBoer et al, Proc. Natl Acad. Sci. USA (1983) 80: 21-25, and Siebenlist et al , CeU (1980) 20: 269. Expression systems in yeast include those described in Hinnen et al , Proc. Natl. Acad. Sci. USA (1978) 75: 1929; Ito et al, J. Bacteriol (1983) 153: 163; Kurtz et al, Mol Cell. Biol (1986) 6: 142; Kunze et al, J. Basic Microbiol (1985) 25: 141; Gleeson et al, J. Gen. Microbiol (1986) 132: 3459, Roggenkamp et al, Mol Gen. Genet. (1986) 202 :302) Das et al, J. Bacteriol (1984) 158: 1165; De Louvencourt et al. , J. Bacteriol (1983) 154: 131, Van den Berg et al , Bio/Technology (1990) 8: 135; Kunze et al, J. Basic Microbiol (1985) 25: 141; Cregg et al, Mol Cell Biol (1985) 5: 3376, U.S. 4,837,148, US 4,929,555; Beach and Nurse, Nature (1981) 300: 706; Davidow et al, Curr. Genet. (1985) 10: 380, Gaillardin et al, Curr. Genet. (1985) 10: 49, Ballance et al, Biochem. Biophys. Res. Commun. (1983) 112: 284-289; Tilbum et al, Gene (1983) 26: 205-221, Yelton et al, Proc. Natl Acad. Sci. USA (1984).Siι 1470-1474, Kelly and Hynes, EMBOJ. (1985) 4: 475479; EP 244,234, and WO 91/00357. Expression of heterologous genes in insects can be accomplished as described in U.S. 4,745,051, Friesen et al (1986) "The Regulation of Baculovirus Gene Expression" in: THE MOLECULAR BIOLOGY OF BACULOVΓRUSES (W. Doerfler, ed.), EP 127,839, EP 155,476, and Vlak et al, J. Gen. Virol (1988) 69: 765-776, Miller et al , Ann. Rev. Microbiol (1988) 42: 111, Carbonell et al, Gene (1988) 73: 409, Maeda et al, Nature (1985) 315: 592-594, Lebacq-Verheyden et al, Mol Cell. Biol. (1988) 8: 3129; Smith et al. , Proc. Natl Acad. Sci. USA (1985) 82: 8404, Miyajima et al, Gene (1987) 58: 273; and Martin et al, DNA (1988) 7:99. Numerous baculoviral strains and variants and corresponding permissive insect host cells from hosts are described in Luckow et al. , Bio/Technology (1988) 6: 47-55, Miller et al. , in GENERIC ENGINEERING (Setlow, J.K. et al. eds.), Vol. 8 (Plenum Publishing, 1986), pp. 277-279, and Maeda et al., Nature, (1985) 315ι 592-594. Mammalian expression can be accomplished as described in Dijkema et al, EMBO J. (1985) 4: 761, Gorman et al , Proc. Natl Acad. Sci. USA (1982b) 79: 6111, Boshart et al, Cell (1985) 41: 521 and U.S. 4,399,216. Other features of mammalian expression can be facilitated as described in Ham and Wallace, Meth. Enz. (1979) 58: 44, Barnes and Sato, Anal. Biochem. (1980) 102ι 255, U.S. 4,767,704, US 4,657,866, US 4,927,762, US 4,560,655, WO 90/103430, WO 87/00195, and U.S. RE 30,985. Constructs including an mammalian San coding sequence or constructs including coding sequences for modulators of mammalian Sem can be administered by a gene therapy protocol, either locally or systemically. These constructs can utilize viral or non-viral vectors and can be delivered in vivo or ex vivo or in vitro. Expression of such coding sequence can be driven by endogenous mammalian or heterologous promoters. Expression of the coding sequence in vivo can be either constitutive or regulated. Gene delivery vehicles (GDVs) are available for delivery of polynucleotides to cells, tissue, or to a the mammal for expression. For example, a polynucleotide sequence of the invention can be administered either locally or systemically in a GDV. These constructs can utilize viral or non-viral vector approaches in in vivo or ex vivo modality. Expression of such coding sequence can be induced using endogenous mammalian or heterologous promoters. Expression of the coding sequence in vivo can be either constitutive or regulated. The invention includes gene delivery vehicles capable of expressing the contemplated polynucleotides. The gene delivery vehicle is preferably a viral vector and, more preferably, a retroviral, adenoviral, adeno-associated viral (AAV), herpes viral, or alphavirus vectors. The viral vector can also be an astrovirus, coronavirus, orthomyxovirus, papovavirus, paramyxovirus, parvovirus, picomavirus, poxvirus, togavirus viral vector. See generally, Jolly, Cancer Gene Therapy 1:51-64 (1994); Kimura, Human Gene Therapy 5:845-852 (1994), Connelly, Human Gene Therapy 6:185-193 (1995), and Kaplitt, Nature Genetics 6:148-153 (1994). Retroviral vectors are well known in the art and we contemplate that any retroviral gene therapy vector is employable in the invention, including B, C and D type retroviruses, xenotropic retroviruses (for example, NZB-X1, NZB-X2 and NZB9-1 (see O'Neill, J. Vir. 53:160, 1985) polytropic retroviruses (for example, MCF and MCF-MLV (see Kelly, J. Vir. 45:291, 1983), spumaviruses and lentiviruses. See RNA Tumor Viruses, Second Edition, Cold Spring Harbor Laboratory, 1985. Portions of the retroviral gene therapy vector may be derived from different retroviruses. For example, retroviral LTRs may be derived from a Murine Sarcoma Virus, a tRNA binding site from a Rous Sarcoma Virus, a packaging signal from a Murine Leukemia Virus, and an origin of second strand synthesis from an Avian Leukosis Virus. These recombinant retroviral vectors may be used to generate transduction competent retroviral vector particles by introducing them into appropriate packaging cell lines (see U.S. Serial No. 07/800,921, filed November 29, 1991). Retrovirus vectors can be constructed for site-specific integration into host cell DNA by incorporation of a chimeric integrase enzyme into the retroviral particle. See, U.S. Serial No. 08/445,466 filed May 22, 1995. It is preferable that the recombinant viral vector is a replication defective recombinant virus. Packaging cell lines suitable for use with the above-described retrovirus vectors are well known in the art, are readily prepared (see U.S. Serial No. 08/240,030, filed May 9, 1994; see also WO 92/05266), and can be used to create producer cell lines (also termed vector cell lines or "VCLs") for the production of recombinant vector particles. Preferably, the packaging cell lines are made from human parent cells (e.g., HT1080 cells) or mink parent cell lines, which eliminates inactivation in human serum. Preferred retroviruses for the construction of retroviral gene therapy vectors include Avian Leukosis Virus, Bovine Leukemia, Virus, Murine Leukemia Virus, Mink-Cell Focus-Inducing Virus, Murine Sarcoma Virus, Reticuloendotiieliosis Virus and Rous Sarcoma Virus. Particularly preferred Murine Leukemia Viruses include 4070A and 1504A (Hartley and Rowe, J. Virol. 19:19-25, 1976), Abelson (ATCC No. VR-999), Friend (ATCC No. VR-245), Graffi, Gross (ATCC No. VR-590), Kirsten, Harvey Sarcoma Virus and Rauscher (ATCC No. VR-998) and Moloney Murine Leukemia Virus (ATCC No. VR-190). Such retroviruses may be obtained from depositories or collections such as the American Type Culture Collection ("ATCC") in Rockville, Maryland or isolated from known sources using commonly available techniques. Exemplary known retroviral gene therapy vectors employable in this invention include those described in GB 2200651; EP No. 415,731; EP No. 345,242; PCT Publication Nos. WO 89/02468, WO 89/05349, WO 89/09271, WO 90/02806, WO 90/07936, WO 90/07936, WO 94/03622, WO 93/25698, WO 93/25234, WO 93/11230, WO 93/10218, and WO 91/02805, in U.S. Patent Nos. 5,219,740, 4,405,712, 4,861,719, 4,980,289 and 4,777,127, in U.S. Serial No. 07/800,921 and in Vile, Cancer Res. 53:3860-3864 (1993); Vile, Cancer Res 53:962-967 (1993); Ram, Cancer Res 53:83-88 (1993); Takamiya, J. Neurosci. Res. 33:493-503 (1992); Baba, J Neurosurg 79:729-735 (1993); Mann, Cell 33:153 (1983); Cane, Proc Natl Acad Sci 81:6349 (1984) and Miller, Human Gene Therapy 1 (1990). Human adenoviral gene therapy vectors are also known in the art and employable in this invention. See, for example, Berkner, Biotechniques 6:616 (1988), and Rosenfeld, Science 252:431 (1991), and PCT Patent Publication Nos. WO 93/07283, WO 93/06223, and WO 93/07282. Exemplary known adenoviral gene therapy vectors employable in this invention include those described in the above-referenced documents and in PCT Patent Publication Nos. WO 94/12649, WO 93/03769, WO 93/19191, WO 94/28938, WO 95/11984, WO 95/00655, WO 95/27071, WO 95/29993, WO 95/34671, WO 96/05320, WO 94/08026, WO 94/11506, WO 93/06223, WO 94/24299, WO 95/14102, WO 95/24297, WO 95/02697, WO 94/28152, WO 94/24299, WO 95/09241, WO 95/25807, WO 95/05835, WO 94/18922 and WO 95/09654. Alternatively, administration of DNA linked to killed adenovirus as described in Curiel, Hum. Gene Ther. 3:147-154 (1992) may be employed. The gene delivery vehicles of the invention also include adenovirus associated virus (AAV) vectors. Leading and preferred examples of such vectors for use in this invention are the AAV-2 basal vectors disclosed in Srivastava, PCT Patent Publication No. WO 93/09239. Most preferred AAV vectors comprise the two AAV inverted terminal repeats in which the native D-sequences are modified by substitution of nucleotides, such that at least 5 native nucleotides and up to 18 native nucleotides, preferably at least 10 native nucleotides up to 18 native nucleotides, most preferably 10 native nucleotides are retained and the remaining nucleotides of the D-sequence are deleted or replaced with non-native nucleotides. The native D-sequences of the AAV inverted terminal repeats are sequences of 20 consecutive nucleotides in each AAV inverted terminal repeat (i.e., there is one sequence at each end) which are not involved in HP formation. The non-native replacement nucleotide may be any nucleotide other than the nucleotide found in the native D-sequence in the same position. Other employable exemplary AAV vectors are pWP-19, pWN-1 , both of which are disclosed in Nahreini, Gene 124:257-262 (1993). Another example of such an AAV vector is psub201. See Samulski, J. Virol. 61:3096 (1987). Another exemplary AAV vector is the Double-D LTR vector. How to make the Double D ITR vector is disclosed in U.S. Patent No. 5,478,745. Still other vectors are those disclosed in Carter, U.S. Patent No. 4,797,368 and Muzyczka, U.S. Patent No. 5,139,941, Chartejee, U.S. Patent No. 5,474,935, and Kotin, PCT Patent PubUcation No. WO 94/288157. Yet a further example of an AAV vector employable in this invention is SSV9AFABTKneo, which contains the AFP enhance and albumin promoter and directs expression predominantly in the liver. Its structure and how to make it are disclosed in Su,Human Gene Therapy 7:463-470 (1996). Additional AAV gene therapy vectors are described in U.S. Patent Nos. 5,354,678; 5,173,414; 5,139,941; and 5,252,479. The gene therapy vectors of the invention also include herpes vectors. Leading and preferred examples are herpes simplex virus vectors containing a sequence encoding a thymidine kinase polypeptide such as those disclosed in U.S. Patent No. 5,288,641 and EP No. 176,170 (Roizman). Additional exemplary herpes simplex virus vectors include HFEM/ICP6-LacZ disclosed in PCT Patent No. WO 95/04139 (Wistar Institute), pHSVlac described in Geller, Science 241:1667-1669 (1988) and in PCT Patent Publication Nos. WO 90/09441 and WO 92/07945, HSV Us3::pgC-lacZ described in Fink, Human Gene Therapy 3:11-19 (1992) and HSV 7134, 2 RH 105 and GAL4 described in EP No. 453,242 (Breakefield), and those deposited with the ATCC as accession numbers ATCC VR-977 and ATCC VR-260. Alpha virus gene therapy vectors may be employed in this invention. Preferred alpha virus vectors are Sindbis viruses vectors. Togaviruses, Semliki Forest virus (ATCC VR-67; ATCC VR-1247), Middleberg virus (ATCC VR-370), Ross River virus (ATCC VR-373; ATCC VR-1246), Venezuelan equine encephalitis virus (ATCC VR923; ATCC VR-1250; ATCC VR-1249; ATCC VR-532), and those described U.S. Patent Nos. 5,091,309 and 5,217,879, and PCT Patent Publication No. WO 92/10578. More particularly, those alpha virus vectors described in U.S. Serial No. 08/405,627, filed March 15, 1995, and U.S. Serial No. 08/198,450 and in PCT Patent PubUcation Nos. WO 94/21792, WO 92/10578, and WO 95/07994, and U.S. Patent Nos. 5,091,309 and 5,217,879 are employable. Such alpha viruses may be obtained from depositories or coUections such as the ATCC in Rockville, Maryland or isolated from known sources using commonly available techniques. Preferably, alphavirus vectors with reduced cytotoxicity are used (see co-owned U.S. Serial No. 08/679640). DNA vector systems such as eukaryotic layered expression systems are also useful for expressing the nucleic acids of the invention. See PCT Patent Publication No. WO 95/07994 for a detailed description of eukaryotic layered expression systems. Preferably, the eukaryotic layered expression systems of the invention are derived from alphavirus vectors and most preferably from Sindbis viral vectors. Other viral vectors suitable for use in the present invention include those derived from poUovirus, for example ATCC VR-58 and those described in Evans, Nature 339:385 (1989), and Sabin, J. Biol. Standardization 1:115 (1973); rriinovirus, for example ATCC VR-1110 and those described in Arnold, J CeU Biochem (1990) L401; pox viruses such as canary pox virus or vaccinia virus, for example ATCC VR-111 and ATCC VR-2010 and those described in Fisher-Hoch, Proc Natl Acad Sci 86 (1989) 317, Flexner, Ann NY Acad Sci 569:86 (1989), Flexner, Vaccine 8:17 (1990); in U.S. Patent Nos. 4,603,112 and 4,769,330 and in WO 89/01973; SV40 virus, for example ATCC VR-305 and those described in Mulligan, Nature 277:108 (1979) and Madzak, J Gen Vir 73:1533 (1992); influenza virus, for example ATCC VR-797 and recombinant influenza viruses made employing reverse genetics techniques as described in U.S. Patent No. .5,166,057 and in Enami, Proc. Natl. Acad. Sci. 87:3802-3805 (1990); Enami and Palese, J. Virol. 65:2711-2713 (1991); and Luytjes, CeU 59:110 (1989), (see also McMicheal., New England J. Med. 309:13 (1983), and Yap, Nature 273:238 (1978) and Nature 277:108, 1979); human immunodeficiency virus as described in EP No. 386,882 and in Buchschacher, J. Vir. 66:2731 (1992); measles virus, for example, ATCC VR-67 and VR-1247 and those described in EP No. 440,219; Aura virus, for example, ATCC VR-368; Bebaru virus, for example, ATCC VR-600 and ATCC VR-1240; Cabassou virus, for example, ATCC VR-922; Chikungunya virus, for example, ATCC VR-64 and ATCC VR-1241; Fort Morgan Virus, for example, ATCC VR-924; Getah virus, for example, ATCC VR-369 and ATCC VR-1243; Kyzylagach virus, for example, ATCC VR-927; Mayaro virus, for example, ATCC VR-66; Mucambo virus, for example, ATCC VR-580 and ATCC VR-1244; Ndumu virus, for example, ATCC VR-371; Pixuna virus, for example, ATCC VR-372 and ATCC VR-1245; Tonate virus, for example, ATCC VR-925; Triniti virus, for example ATCC VR-469; Una virus, for example, ATCC VR-374; Whataroa virus, for example ATCC VR-926; Y-62-33 virus, for example, ATCC VR-375; O'Nyong virus, Eastern encephalitis virus, for example, ATCC VR-65 and ATCC VR-1242; Western encephaUtis virus, for example, ATCC VR-70, ATCC VR-1251, ATCC VR-622 and ATCC VR-1252; and coronavirus, for example, ATCC VR-740 and those described in Hamre, Proc. Soc. Exp. Biol. Med. 121:190 (1966). Delivery of the compositions of this invention into ceUs is not limited to the above mentioned viral vectors. Other delivery methods and media may be employed such as, for example, nucleic acid expression vectors, polycationic condensed DNA linked or unlinked to kiUed adenovirus alone, for example see U.S. Serial No. 08/366,787, filed December 30, 1994, and Curiel, Hum Gene Ther 3:147-154 (1992) ligand linked DNA, for example, see Wu, J. Biol. Chem. 264:16985-16987 (1989), eukaryotic cell deUvery vehicles ceUs, for example see U.S. Serial No. 08/240,030, filed May 9, 1994, and U.S. Serial No. 08/404,796, deposition of photopolymerized hydrogel materials, hand-held gene transfer particle gun, as described in U.S. Patent No. 5,149,655, ionizing radiation as described in U.S. Patent No. 5,206,152 and in PCT Patent Publication No. WO 92/11033, nucleic charge neutralization or fusion with ceU membranes. Additional approaches are described in PhiUp, Mol. CeU. Biol. 14:2411-2418 (1994) and in Woffendin, Proc. Natl. Acad. Sci. 91:1581-585 (1994). Particle mediated gene transfer may be employed, for example see U.S. provisional application No. 60/023,867. Briefly, the sequence can be inserted into conventional vectors that contain conventional control sequences for high level expression, and then be incubated with synthetic gene transfer molecules such as polymeric DNA-binding cations like polylysine, protamine, and albumin, linked to ceU targeting ligands such as asialoorosomucoid, as described in Wu and Wu, J. Biol. Chem. 262:4429-4432 (1987), insulin as described in Hucked, Biochem. Pharmacol. 40:253-263 (1990), galactose as described in Plank, Bioconjugate Chem 3:533-539 (1992), lactose or transferrin. Naked DNA may also be employed. Exemplary naked DNA introduction methods are described in PCT Patent PubUcation No. WO 90/11092 and U.S. Patent No. 5,580,859. Uptake efficiency may be improved using biodegradable latex beads. DNA coated latex beads are efficiently transported into ceUs after endocytosis initiation by the beads. The method may be improved further by treatment of the beads to increase hydrophobicity and thereby facilitate disruption of the endosome and release of the DNA into the cytoplasm. Liposomes that can act as gene delivery vehicles are described in U.S. Patent No. 5,422,120, PCT Patent PubUcation Nos. WO 95/13796, WO 94/23697, and WO 91/144445, and EP No. 524,968. As described in co-owned U.S. provisional application No. 60/023,867, on non-viral delivery, the nucleic acid sequences can be inserted into conventional vectors that contain conventional control sequences for high level expression, and then be incubated with synthetic gene transfer molecules such as polymeric DNA-binding cations like polylysine, protamine, and albumin, linked to ceU targeting Ugands such as asialoorosomucoid, insulin, galactose, lactose, or transferrin. Other delivery systems include the use of Uposomes to encapsulate DNA comprising the gene under the control of a variety of tissue-specific or ubiquitously-active promoters. Further non-viral deUvery suitable for use includes mechanical deUvery systems such as the approach described in Woffendin et al., Proc. Natl. Acad. Sci. USA 91(24):11581-11585 (1994). Moreover, the coding sequence and the product of expression of such can be deUvered through deposition of photopoiymerized hydrogel materials. Other conventional methods for gene deUvery that can be used for deUvery of the coding sequence include, for example, use of hand-held gene transfer particle gun, as described in U.S. Patent No. 5,149,655; use of ionizing radiation for activating transferred gene, as described in U.S. Patent No. 5,206,152 and PCT Patent Publication No. WO 92/11033. Exemplary liposome and polycationic gene deUvery vehicles are those described in U.S. Patent Nos. 5,422,120 and 4,762,915, in PCT Patent PubUcation Nos. WO 95/13796, WO 94/23697, and WO 91/14445, in EP No. 524,968 and in Stryer, Biochemistry, pages 236-240 (1975) W.H. Freeman, San Francisco, Szoka, Biochem. Biophys. Acta. 600:1 (1980); Bayer, Biochem. Biophys. Acta. 550:464 (1979); Rivnay, Meth. Enzymol. 149:119 (1987); Wang, Proc. Natl. Acad. Sci. 84:7851 (1987); and Plant, Anal. Biochem. 176:420 (1989). Test compounds can be tested as candidate modulators by testing the abiUty to increase or decrease the expression of mammaUan Sem. The candidate modulators can be derived from any of the various possible sources of candidates, such as for example, libraries of peptides, peptoids, smaU molecules, polypeptides, antibodies, polynucleotides, smaU molecules, antisense molecules, ribozymes, cRNA, cDNA, polypeptides presented by phage display. Described below are some exemplary and possible sources of candidates, including synthesized libraries of peptides, peptoids, and small molecules. The exemplary expression systems can be used to generate cRNA or cDNA libraries that can also be screened for the ability to modulate mammalian Sem activity or expression. Candidate molecules screened for the ability to agonize mammaUan Sem expression or activity may be useful for inducing differentiation in a population of progenitor ceUs. SmaU molecules can be screened for the abiUty to either affect mammaUan Sem expression or affect mammaUan Sem function by enhancing or interfering in mammalian Scm's ability to interact with other molecules that mammaUan Sem normaUy interacts with in mammalian Scm's normal function. Mammalian Sem peptide modulators are screened using any available method. The assay conditions ideally should resemble the conditions under which the mammaUan Sem modulation is exhibited in vivo, that is, under physiologic pH, temperature, ionic strength, etc. Suitable antagonists will exhibit strong inhibition of mammaUan Sem expression or activity at concentrations that do not cause toxic side effects in the subject. A further alternative agent that can be used herein as a modulator of mammalian Sem is a small molecule antagonist. SmaU molecules can be designed and screened from a pool of synthetic candidates for abiUty to modulate mammalian Sem. There exist a wide variety of smaU molecules, including peptide analogs and derivatives, that can act as inhibitors of proteins and polypeptides. Libraries of these molecules can be screened for those compounds that inhibit the activity or expression of mammaUan Sem. Similarly, ribozymes can be screened in assays appropriate for ribozymes, taking into account the special biological or biochemical nature of ribozymes. Assays for affecting mammaUan Sem expression can measure mammaUan San message or protein directly, or can measure a reporter gene expression which is under the control of an mammaUan Sem promoter and/or 5' untranslated region (UTR). MammaUan Sem or a modulator of mammaUan Sem can be administered to a patient exhibiting a condition characterized by abnormal cell proUferation, in which aberrant mammaUan Sem gene expression is implicated, particularly excessive mammaUan Sem activity, or excessive activity controUed or induced by mammaUan Sem activity. The modulator can be incorporated into a pharmaceutical composition that includes a pharmaceuticaUy acceptable carrier for the modulator. Suitable carriers may be large, slowly metabolized macromolecules such as proteins, polysaccharides, polylactic acids, polyglycolic acids, polymeric amino acids, amino acid copolymers, and inactive virus particles. Such carriers are weU known to those of ordinary skill in the art. PharmaceuticaUy acceptable salts can be used therein, for example, mineral acid salts such as hydrochlorides, hydrobromides, phosphates, sulfates, and the Uke; and the salts of organic acids such as acetates, propionates, malonates, benzoates, and the Uke. A thorough discussion of pharmaceuticaUy acceptable excipients is avaUable in REMINGTON'S PHARMACEUTICAL SCIENCES (Mack Pub. Co., NJ. 1991). PharmaceuticaUy acceptable carriers in therapeutic compositions may contain Uquids such as water, saline, glycerol and ethanol. Additionally, auxiliary substances, such as wetting or emulsifying agents, pH buffering substances, and the Uke, may be present in such vehicles. TypicaUy, the therapeutic compositions are prepared as injectables, either as liquid solutions or suspensions; soUd forms suitable for solution in, or suspension in, Uquid vehicles prior to injection may also be prepared. Liposomes are included within the definition of a pharmaceuticaUy acceptable carrier. The term "Uposomes" refers to, for example, the liposome compositions described in U.S. Patent NO: 5,422,120, WO 95/13796, WO 94/23697, WO 91/14445 and EP 524,968 Bl. Liposomes may be pharmaceutical carriers for the peptides, polypeptides or polynucleotides of the invention, or for combination of these therapeutics. Any therapeutic of the invention, including, for example, polynucleotides for expression in the patient, or ribozymes or antisense oUgonucleotide, can be formulated into an enteric coated tablet or gel capsule according to known methods in the art. These are described in the foUowing patents: US 4,853,230, EP 225,189, AU 9,224,296, AU 9,230,801, and WO 92144,52. Such a capsule is administered oπdly to be targeted to the jejunum. At 1 to 4 days following oral administration expression of the polypeptide, or inhibition of expression by, for example a ribozyme or an antisense oligonucleotide, is measured in the plasma and blood, for example by antibodies to the expressed or non-expressed proteins. Administration of a therapeutic agent of the invention, including for example an mammaUan Sem modulator, includes administering a therapeutically effective dose of the therapeutic agent by a means considered or empiricaUy deduced to be effective for inducing the desired effect in the patient. Both the dose and the administration means can be determined based on the specific quaUties of the therapeutic, the condition of the patient, the progression of the disease, and other relevant factors. Administration of the therapeutic agents of the invention can include, local or systemic administration, including injection, oral administration, particle gun or catheterized administration, and topical administration. The therapeutics of the invention can be administered in a therapeutically effective dosage and amount, in the process of a therapeuticaUy effective protocol for treatment of the patient. The initial and any subsequent dosages administered will depend upon the patient's age, weight, condition, and the disease, disorder or biological condition being treated. Depending on the therapeutic, the dosage and protocol for administration will vary, and the dosage wiU also depend on the method of administration selected, for example, local or systemic administration. For polypeptide therapeutics, for example, a dominant negative mammaUan Sem polypeptide or a polypeptide modulator of mammalian Sem, the dosage can be in the range of about 5 μg to about 50 μg/kg of patient body weight, also about 50 μg to about 5 mg/kg, also about 100 μg to about 500 μg/kg of patient body weight, and about 200 to about 250 μg/kg. For polynucleotide therapeutics, depending on the expression of the polynucleotide in the patient, for tissue targeted administration, vectors containing expressible constructs including mammaUan San coding sequences or modulator coding sequences, or non-coding sequences can be administered in a range of about 100 ng to about 200 mg of DNA for local administration in a gene therapy protocol, also about 500 ng to about 50 mg, also about 1 ug to about 2 mg of DNA, about 5 ug of DNA to about 500 ug of DNA, and about 20 ug to about 100 ug during a local administration in a gene therapy protocol, and for example, a dosage of about 500 ug, per injection or administration. Non-coding sequences that act by a catalytic mechanism, for example, catalyticaUy active ribozymes may require lower doses than non-coding sequences that are held to the restrictions of stoichiometry, as in the case of, for example, antisense molecules, although expression Umitations of the ribozymes may again raise the dosage requirements of ribozymes being expressed in vivo in order that they achieve efficacy in the patient. Factors such as method of action and efficacy of transformation and expression are therefore considerations that will effect the dosage required for ultimate efficacy for DNA and nucleic acids. Where greater expression is desired, over a larger area of tissue, larger amounts of DNA or the same amounts readministered in a successive protocol of administrations, or several administrations to different adjacent or close tissue portions of for example, a tumor site, may be required to effect a positive therapeutic outcome. For administration of small molecule modulators of mammaUan Sem polypeptide activity, depending on the potency of the smaU molecule, the dosage may vary. For a very potent inhibitor, microgram (μg) amounts per kUogram of patient may be sufficient, for example, in the range of about 1 μg/kg to about 500 mg/kg of patient weight, and about 100 μg/kg to about 5 mg/kg, and about 1 μg/kg to about 50 μg/kg, and, for example, about 10 ug/kg. For administration of peptides and peptoids the potency also affects the dosage, and may be in the range of about 1 μg/kg to about 500 mg/kg of patient weight, and about 100 μg/kg to about 5 mg/kg, and about 1 μg/kg to about 50 μg/kg, and a usual dose might be about 10 ug/kg. In aU cases, routine experimentation in clinical trials wiU determine specific ranges for optimal therapeutic effect, for each therapeutic, each administrative protocol, and administration to specific patients wiU also be adjusted to within effective and safe ranges depending on the patient condition and responsiveness to initial administrations. Administration of a therapeutic agent for a condition in which increased expression of mammaUan Sem is impUcated, for example, in the case of promyelocytic leukemia, chronic myelogenous leukemia, lymphoblastic leukemia, Buriάtt's lymphoma, colorectal adenocarcinoma, lung carcinoma, melanoma, and lymphoma, can be preceded by diagnosis of the condition using an mammaUan San probe, generated from any portion of the mammaUan Sem gene, and probing the suspect tissue. bDNA technology using bDNA probes to mammaUan San gene sequences or mammaUan San mRNA sequences may be used, as described in WO 92/02526 or U.S. 5,451,503, and U.S. 4,775,619. Once diagnosis is complete, treatment can include administration of mammaUan San polynucleotides or anti-sense oUgonucleotide by a gene therapy protocol, or by administration by other means including local or systemic administration, of an mammalian Sem modulator, for example an mammaUan San- specific ribozyme, or a geneticaUy altered mammaUan Sem variant, for example a dominant negative mammalian Sem, or a small molecule or peptide or peptoid mammaUan Sem modulator, or any combination of these potential therapeutics. The patient can be subsequently monitored by periodic reprobing of the affected tissue with an mammaUan Sem probe. Even in cancers where mammaUan San mutations are not implicated, mammaUan Sem upregulation or enhancement of mammaUan Sem function may have therapeutic application. In these cancers, increasing mammaUan Sem expression or enhancing mammaUan Sem function may help to suppress the tumors. SimUarly, even in tumors where mammaUan Sem expression is not aberrant, effecting mammaUan Sem upregulation or augmentation of mammaUan Sem activity may suppress metastases. Further objects, features, and advantages of the present invention wiU become apparent from the detailed description. It should be understood, however, that the detailed description, while indicating preferred embodiments of the invention, is given by way of illustration only, since various changes and modifications within the spirit and scope of the invention wiU become apparent to those skiUed in the art from this detailed description. Definitions A "nucleic acid molecule" or a "polynucleotide," as used herein, refers to either RNA or DNA molecule that encodes a specific amino acid sequence or its complementary strand. Nucleic acid molecules may also be non-coding sequences, for example, a ribozyme, an antisense oligonucleotide, or an untranslated portion of a gene. A "coding sequence" as used herein, refers to either RNA or DNA that encodes a specific amino acid sequence or its complementary strand. A polynucleotide may include, for example, an antisense oligonucleotide, or a ribozyme, and may also include such items as a 3' or 5' untranslated region of a gene, or an intron of a gene, or other region of a gene that does not make up the coding region of the gene. The DNA or RNA may be single stranded or double stranded. Synthetic nucleic acids or synthetic polynucleotides can be chemically synthesized nucleic acid sequences, and may also be modified with chemical moieties to render the molecule resistant to degradation. Synthetic nucleic acids can be ribozymes or antisense molecules, for example. Modifications to synthetic nucleic acid molecules include nucleic acid monomers or derivative or modifications thereof, including chemical moieties. For example, phosphothioates can be used for the modification. A polynucleotide derivative can include, for example, such polynucleotides as branched DNA (bDNA). A polynucleotide can be a synthetic or recombinant polynucleotide, and can be generated, for example, by polymerase chain reaction (PCR) amptifϊcation, or recombinant expression of complementary DNA or RNA, or by chemical synthesis. MammaUan Sem polynucleotides contain at least 95% and preferably at least 97% identity to either mouse or human hScm sequences. These can be obtained, inter alia, by hybridization of mouse or human San probes under conditions of stringent hybridization. Encompassed within the definition of mammaUan, human, and mouse San are sequences which contain allelic variants, as weU as sequences which differ due to the degeneracy of the genetic code. The term "functional portion of" as used herein refers to a portion of an mammaUan Sem wUd-type molecule which retains at least 50% of activity of mammalian Sem. It also encompasses a portion of an mammaUan San gene having single base substitutions, deletions, or insertions that have no adverse effect on the activity of the molecule. Truncations of mammaUan Sem, fragments of Sem, and combinations of fragments of Sem, which retain at least 50% activity are contemplated. Such portions of hScm may also be fused to other proteins, such as in a gene fusion. The term "functional" as used herein refers to a gene functional in cancer or differentiation. A molecule is functional if its expression causes, directly or indirectly, an event specificaUy associated with differentiation, mitosis, oncogenesis, metastasis, or the Uke. The term "modulate" as used herein refers to the abiUty of a molecule to alter the function or expression of another molecule. Thus, modulate could mean, for example, inhibit, antagonize, agonize, upregulate, downregulate, induce, or suppress. A modulator has the capabUity of altering function of its target. Such alteration can be accompUshed at any stage of the transcription, translation, expression or function of the protein, so that, for example, modulation of mammaUan Sem can be accompUshed by modulation of the DNA, RNA, and protein products of the gene. It assumed that modulation of the function of the target, for example, mammaUan Sem, wiU in turn modulate, alter, or affect the function or pathways leading to a function of genes and proteins that would otherwise associate, and interact, or respond to, mammaUan Sem. A "maUgnancy" includes any proUferative disorder in which the ceUs proUferating are ultimately harmful to the host. Cancer is an example of a proUferative disorder that manifests a maUgnancy. Neoplasia is the state of ceUs which experience uncontroUed cell growth, whether or not malignant. The term "regulatory sequence" as used herein refers to a nucleic acid sequence encoding one or more elements that are capable of affecting or effecting expression of a gene sequence, including transcription or translation thereof, when the gene sequence is placed in such a position as to subject it to the control thereof. Such a regulatory sequence can be, for example, a minimal promoter sequence, a complete promoter sequence, an enhancer sequence, an upstream activation sequence ("UAS"), an operator sequence, a downstream termination sequence, a polyadenylation sequence, an optimal 5' leader sequence to optimize initiation of translation, and a Shine-Dalgarno sequence. Alternatively, the regulatory sequence can contain a combination enhancer/promoter element. The regulatory sequence that is appropriate for expression of the present construct differs depending upon the host system in which the construct is to be expressed. Selection of the appropriate regulatory sequences for use herein is within the capability of one skiUed in the art. For example, in prokaryotes, such a regulatory sequence can include one or more of a promoter sequence, a ribosomal binding site, and a transcription termination sequence. In eukaryotes, for example, such a sequence can include one or more of a promoter sequence and/or a transcription termination sequence. If any necessary component of a regulatory sequence that is needed for expression is lacking in the polynucleotide construct, such a component can be supplied by a vector into which the polynucleotide construct can be inserted for expression. Regulatory sequences suitable for use herein may be derived from any source including a prokaryotic source, an eukaryotic source, a virus, a viral vector, a bacteriophage or from a linear or circular plasmid. An example of a regulatory sequence is the human immunodeficiency virus ("HIV") promoter that is located in the U3 and R region of the HIV long terminal repeat ("LTR"). Alternatively, the regulatory sequence herein can be a synthetic sequence, for example, one made by combining the UAS of one gene with the remainder of a requisite promoter from another gene, such as the GADP/ADH2 hybrid promoter. The terms "protein", "polypeptide", "polypeptide derivatives" and modifications and variants thereof refer herein to the expression product of a polynucleotide construct of the invention as defined above. The terms further include truncations, variants, aUeles, analogs and derivatives thereof. Unless specificaUy mentioned otherwise, such mammaUan Sem polypeptides possess one or more of the bioactivities of the mammaUan Sem protein, such as those discovered herein. This term is not Umited to a specific length of the product of the mammaUan San gene. Thus, polypeptides that are identical or contain at least 85%, and more preferably 90%, and most preferably 95% identity with the mammaUan Sem protein or the mature mammaUan Sem protein, wherever derived, from human or nonhuman sources are included within this definition of the mammaUan Sem polypeptide. Also included, therefore, are aUeles and variants of the product of the mammaUan San gene that contain amino acid substitutions, deletions, or insertions. The amino acid substitutions can be conservative amino acid substitutions or substitutions to eUminate non-essential amino acid residues such as to alter a glycosylation site, a phosphorylation site, an acetylation site, or to alter the folding pattern by altering the position of the cysteine residue that is not necessary for function, etc. Conservative amino acid substitutions are those that preserve the general charge, hydrophobicity/hydrophUicity and/or steric bulk of the amino acid substituted, for example, substitutions between the members of the foUowing groups are conservative substitutions: Gly/ Ala, Val/Ile/Leu, Asp/Glu, Lys/ Arg, Asn/Gln, Ser/Thr/Cys and Phe/Trp/Tyr. Analogs include peptides having one or more peptide mimics, also known as peptoids, that possess mammaUan Sem protein-Uke activity. Included within the definition are, for example, polypeptides containing one or more analogs of an amino acid (including, for example, unnatural amino acids, etc.), polypeptides with substituted linkages, as weU as other modifications known in the art, both naturally occurring and nonnaturally occurring. The term "mammaUan Sem" also may include post-expression modifications of the polypeptide, for example, glycosylations, acetylations, phosphorylations, myrstylations, farnesylations, palmitoylations and the Uke. The term "polypeptide fragment" as used herein refers to a polypeptide sequence that does not encode the fuU length of a protein but that is identical to a region of the protein. The fragment is designed to retain the functional aspect of the region of the polypeptide from which it is derived. Two fragments can cooperate to provide function. Two distinct polypeptide fragments of the same gene may represent expressed spUce variants of that gene, although functionality and expression of the polypeptide spUce variant products may occur in similar biological conditions, and may be related, at least in part, in function. The term "derivative" as used herein in reference to a polypeptide or a polynucleotide means a polypeptide or polynucleotide that retains at least 50% ofthe functionaUty of the polypeptide or polynucleotide to which it is a derivative. They may be variously modified by nucleotide or amino acid deletions, substitutions, insertions or inversions by, for example, site directed mutagenesis of the underlying nucleic acid molecules. Derivatives of a polypeptide or polynucleotide may also be fragments or combinations of fragments thereof. In any case, a derivative, or a fragment, retains at least some, and preferably aU of the function of the polypeptide from which it is derived. An "isolated polypeptide" or "isolated polynucleotide" as used herein refers to a polypeptide or polynucleotide, respectively, produced in vivo or in vitro in an environment manipulated by humans using state of the art techniques of molecular biology, biochemistry and gene therapy. For example, an isolated polypeptide can be produced in a ceU free system by automated peptide or polypeptide synthesis, in heterologous host ceUs transformed with the nucleic acid sequence encoding the polypeptide and regulatory sequences for expression in the host ceUs, and in an animal into which the coding sequence of the polypeptide has been introduced for expression in the animal. A polypeptide or polynucleotide is "isolated" for purposes herein to the extent that it is not present in its natural state inside a ceU as a product of nature. For example, such isolated polypeptides or polynucleotides can be 10% pure, 20% pure, or a higher degree of purity, such as 50%, 75%, 85%, or 90%. The term "condition" as used herein in terms of "a patient having a condition" refers to a particular state of molecular and cellular systems in a biological context. A biological context includes any organism considered to have Ufe, and for the purposes of this invention includes but is not Umited the foUowing organisms or groups: animals, mammals, humans, and vertebrates. A biological condition can include, for example, a disease or a medical condition that may or may not be characterized by identifiable symptoms or indicators. A "condition characterized by abnormal ceU proUferation" is most likely a cancer condition, but may also be a condition arising in the development of an organism. The term "modulator" as used herein describes any moiety capable of changing the endogenous activity or a polypeptide. Modulatory activities can include, for example, modulation at the level of transcription, translation, expression, secretion, or modulation of polypeptide activity inside or outside a cell. Modulation can include, for example, inhibition, antagonism, and agonism, and modulation can include, for example, modulation of upstream or downstream effects that effect the ultimate activities in a pathway, or modulation of the configuration of a polypeptide such that its activity is altered. Modulation can be transitory or permanent, and may be a dose dependent effect. The term "inhibitor" for use herein can be any inhibitor of a polypeptide activity. The category includes but is not Umited to any of the herein described antagonists of mammaUan Sem. The inhibitor of mammaUan Sem can be an antibody- based mammaUan Sem antagonist, or a polypeptide fragment thereof, a peptide mammaUan Sem antagonist, a peptoid mammalian Sem antagonist, or a smaU molecule mammaUan Sem antagonist. The polypeptide inhibitor can be one screened from a cDNA, cRNA, or phage display Ubrary of polypeptides. The inhibitor can be a polynucleotide, such as, for example a ribozyme or an antisense oUgonucleotide, or can be derivatives of these. It is expected that some inhibitors will act at transcription, some at translation, and some on the mature protein. However, the use and appropriateness of such inhibitors of mammalian Sem for the purposes of the invention are not limited to any theories of mechanism of action of the inhibitor. It is sufficient for purposes of the invention that an inhibitor inhibit the activity of mammaUan Sem. The term "antagonist" as used herein refers to a molecule that inhibits or blocks the activity of a polypeptide, either by blocking the polypeptide itself, or by causing a reduced expression of the polypeptide by either blocking transcription of the gene encoding the polypeptide, or by interfering with or destroying a transcription or translation product of the gene. An antagonist may be, for example, a small molecule, peptide, peptoid, polypeptide, or polynucleotide. The polynucleotide may be, for example, a ribozyme, an antisense oUgonucleotide, or a coding sequence. The term "agonist" as used herein refers to a molecule that mimics the activity of the target polypeptide. For example, in the case of mammalian Sem, an agonist could mimic the transcriptional negative regulation capability of mammaUan Sem. An agonist may be, for example a smaU molecule, peptide, peptoid, polypeptide, or polynucleotide. The term "pharmaceutical composition" refers to a composition for administration of a therapeutic agent, such as antibodies or a polypeptide, or inhibitors or genes and other therapeutic agents tisted herein, in vivo, and refers to any pharmaceutical carrier that does not itself induce the production of antibodies harmful to the individual receiving the composition, and which may be admimstered without undue toxicity. The term "an effective amount" as used herein refers to an amount that is effective to induce a desired effect. Where the effect is a therapeutic effect, the effective amount is that amount that will accomplish a therapeutic goal, for example, tumor regression, tumor marker reduction, or a positive indication from other indicia of cancer that indicates a reduction or growth slowing of cancer ceUs. Where the therapeutic agent is, for example, an antagonist of mammaUan Sem, the effective amount of the antagonist would be an amount that antagonizes mammaUan Sem activity among a population of ceUs. The amount that is effective depends in part upon the indicia selected for determining effectiveness, and depends upon the effect sought. An administration of a therapeutic agent of the invention includes administration of a therapeuticaUy effective amount of the agent of the invention. The term "therapeuticaUy effective amount" as used herein refers to an amount of a therapeutic agent to treat or prevent a condition treatable by administration of a composition of the invention. That amount is the amount sufficient to exhibit a detectable therapeutic or preventative or ameliorative effect. The effect may include, for example, treatment or prevention of the conditions Usted herein. The precise effective amount for a subject will depend upon the subject's size and health, the nature and extent of the condition being treated, recommendations of the treating physician, and the therapeutics or combination of therapeutics selected for administration. Thus, it is not useful to specify an exact effective amount in advance. However, the effective amount for a given situation can be determined by routine experimentation. Administration can include administration of a polypeptide, and causing the polypeptide to be expressed in an animal by administration of the polynucleotide encoding the polypeptide. A "recombinant vector" herein refers to any vector for transfer or expression of the polynucleotides herein in a cell, including, for example, viral vectors, non-viral vectors, plasmid vectors and vectors derived from the regulatory sequences of heterologous hosts and expression systems. The term "in vivo administration" refers to administration to a mammal of a polynucleotide encoding a polypeptide for expression in the mammal. In particular, direct in vivo administration involves transfecting a mammal's ceU with a coding sequence without removing the ceU from the mammal. Thus, direct in vivo administration may include direct injection of the DNA encoding the polypeptide of interest in the region afflicted by the malignancy or proliferative disorder, resulting in expression in the mammal's ceUs. The term "ex vivo administration" refers to transfecting a ceU, for example, a ceU from a population of ceUs that are maUgnant or proliferating, after the ceU is removed from the mammal. After transfection the cell is then replaced in the mammal. Ex vivo administration can be accompUshed by removing ceUs from a mammal, optionally selecting for ceUs to transform, (i.e. ceUs that are maUgnant or proUferating) rendering the selected ceUs incapable of repUcation, transforming the selected ceUs with a polynucleotide encoding a gene for expression, (i.e. mammaUan Sari), including also a regulatory region for faciUtating the expression, and placing the transformed ceUs back into the mammal for expression of the mammaUan San. "BiologicaUy active" refers to a molecule that retains a specific activity. A biologicaUy active mammaUan Sem polypeptide, for example, retains the activity including for example the control of a homeotic gene or group of homeotic genes. "Mammalian cell" as used herein refers to a subset of eukaryotic ceUs useful in the invention as host cells, and includes human cells, and animal cells such as those from dogs, cats, cattle, horses, rabbits, mice, goats, pigs, etc. The ceUs used can be geneticaUy unaltered or can be genetically altered, for example, by transformation with appropriate expression vectors, marker genes, and the like. MammaUan ceUs suitable for the method of the invention are any mammaUan ceU capable of expressing the genes of interest, or any mammaUan ceUs that can express a cDNA Ubrary, cRNA Ubrary, genomic DNA Ubrary or any protein or polypeptide useful in the method of the invention. MammaUan ceUs also include ceUs from ceU Unes such as those immortalized ceU Unes available from the American Type Culture CoUection (ATCC). Such ceU Unes include, for example, rat pheochromocytoma ceUs (PC 12 cells), embryonal carcinoma cells (P19 ceUs), Chinese hamster ovary (CHO) ceUs, HeLa ceUs, baby hamster kidney (BHK) ceUs, monkey kidney cells (COS), human hepatoceUular carcinoma ceUs (e.g., Hep G2), human embryonic kidney cells, mouse sertoli cells, canine kidney cells, buffalo rat liver ceUs, human lung ceUs, human tiver ceUs, mouse mammary tumor ceUs, as weU as others. Also included are hematopoetic stem ceUs, neuronal stem cells such as neuronal sphere ceUs, and embryonic stem ceUs (ES ceUs). The present invention wUl now be Ulustrated by reference to the foUowing examples which set forth particularly advantageous embodiments. However, it should be noted that these embodiments are illustrative and are not to be construed as restricting the invention in any way. F.τamp1ft 1 A smaU molecule modulator of mammaUan Sem is identified and incorporated into a pharmaceutical composition including a liposomal-based pharmaceuticaUy acceptable carrier for administration to a cancer patient for controlling the expression or activity of mammaUan Sem in the patient. Administration the composition is achieved by injection into the tumor tissue. The patient is monitored for reduction of mammaUan Sem activity as a diagnostic marker evaluating the effectiveness of the treatment. Example.2 A population of progenitor ceUs are treated with a functional portion of recombinant mammaUan Sem polypeptide and induced to differentiate. The process is reversed by administering to the population of cells an inhibitor of mammaUan Sem activity. Example 3 Northern blots of mRNA isolated from various tissues were probed with mammalian San cDNA for an analysis of the expression differential of mammaUan San in normal and cancerous tissues, using standard techniques for accomplishing the hybridizations. The normal tissues probed were human adult heart, skeletal muscle, pancreas, prostate, testes, ovary, colon, thymus, brain, placenta, lung, liver, kidney, peripheral leukocytes, and spleen. The tissue specific expression of mammaUan San in normal human adult tissue indicated abundant mammaUan San transcript in human heart, skeletal muscle, pancreas, and testes. A somewhat less abundant amount of transcript was present in human prostate, ovary, colon, thymus, brain, placenta, lung, Uver, and kidney, and the transcript was virtually undetectable in human leukocytes, and undetectable in the human spleen tissue probed. By contrast, mammaUan San transcripts were present at an abundantly high level in the foUowing human cancer ceU lines: promyelocytic leukemia HL-60, HeLa ceU S3, chronic myelogenous leukemia K-562, lymphoblastic leukemia MOLT-4, Buriάtt's lymphoma Raji, colorectal adenomcarcinoma SW480, lung carcinoma A549, and melanoma G361. In addition, San transcript was also abundantly high in lung carcinoma tissue, colorectal adenocarcinoma tissue, and iymphocytic cancer tissues. The mammaUan Sem transcript was approximately 4 to 4.2 kUobases in size for aU hybridizations. Hybridizations were conducted using stringent conditions and a standard hybridization protocol for accomplishing Northern blot hybridizations. Transcript levels were controUed for by probing with actin probe on the same blots probed with mammaUan San coding sequence. The description of the invention draws on previously pubUshed work and, at times, on pending patent applications. By way of example, such work consists of scientific papers, abstracts, or issued patents, and pubUshed patent appUcations. AU pubUshed work cited herein are hereby incorporated by reference. The following sequences are described below: SEQ ID NOS: 1, 3, and 5 are human cDNA sequences for Sem isoforms SEQ ID NOS: 2, 4, and 6 are translated human amino acid sequences for the Sem isoforms SEQ ID NO: 7 is the mouse cDNA for Sem SEQ ID NO: 8 is the translated mouse amino acid sequence for Sem SEQUENCE LISTING (1) GENERAL INFORMATION: (i) APPLICANT: Randazzo, Filippo (ii) TITLE OF INVENTION: Mammalian Sex Comb on Midleg Acts as a Tumor Suppressor (iii) NUMBER OF SEQUENCES: 8 (iv) CORRESPONDENCE ADDRESS: (A) ADDRESSEE: Chiron Corporation (B) STREET: 4560 Horton Street (C) CITY: Emeryville (D) STATE: California (E) COUNTRY: U.S.A. (F) ZIP: 94608 (v) COMPUTER READABLE FORM: (A) MEDIUM TYPE: Floppy disk (B) COMPUTER: IBM PC compatible (C) OPERATING SYSTEM: PC-DOS/MS-DOS (D) SOFTWARE: Patentln Release #1.0, Version #1.30 (vi) CURRENT APPLICATION DATA: (A) APPLICATION NUMBER: (B) FILING DATE: (C) CLASSIFICATION: (viii) ATTORNEY/AGENT INFORMATION: (A) NAME: Guth, Joseph H. (B) REGISTRATION NUMBER: 31,261 (C) REFERENCE/DOCKET NUMBER: 1224.006 (ix) TELECOMMUNICATION INFORMATION: (A) TELEPHONE: (510) 923-3888 (B) TELEFAX: (510) 655-3542 (2) INFORMATION FOR SEQ ID Nθ:l: (I) SEQUENCE CHARACTERISTICS: (A) LENGTH: 2855 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (genomic) (xi) SEQUENCE DESCRIPTION: SEQ ID NO:l: CAAATCATAA TAATGCAGGT CATTTTACCT GGGACAAATA CCTAAAAGAA ACATGTTCAG 60 TCCCAGCGCC TGTCCATTGC TTCAAGCAGT CCTACACACC TCCAAGCAAC GAGTTCAAGA 120 TCAGTATGAA ATTGGAAGCA CAGGACCCCA GGAACACCAC ATCCACCTGT ATTGCCACAG 180 TAGTTGGACT GACAGGTGCC CGCCTTCGCC TGCGCCTTGA TGGGAGCGAC AACAAAAATG 240 ACTTCTGGCG GCTGGTTGAC TCAGCTGAAA TCCAGCCTAT TGGGAACTGT GAAAAGAATG 300 GGGGTATGCT ACAGCCACCT CTTGGATTTC GGCTGAATGC GTCTTCTTGG CCCATGTTCC 360 TTTTGAAGAC GCTAAATGGA GCAGAGATGG CTCCCATCAG GATTTTCCAC AAGGAGCCAC 420 CATCGCCTTC CCACAACTTC TTCAAAATGG GAATGAAGCT AGAAGCTGTG GACAGGAAGA 480 ACCCTCATTT CATTTGCCCA GCCACTATTG GGGAGGTTCG GGGCTCAGAG GTGCTTGTCA 540 CTTTTGATGG GTGGCGAGGG GCCTTTGACT ACTGGTGCCG CTTCGACTCC CGAGACATCT 600 TCCCTGTGGG CTGGTGTTCC TTGACTGGAG ACAACCTGCA GCCTCCTGGC ACCAAAGTTG 660 TGATTCCAAA GAATCCCTAT CCTGCCTCCG ATGTGAATAC TGAGAAGCCC AGCATCCACA 720 GCAGCACCAA AACTGTCTTG GAACATCAAC CAGGGCAGAG GGGGCGTAAA CCAGGAAAGA 780 AGCGGGGCCG GACACCCAAG ACCCTAATTT CCCATCCCAT CTCTGCCCCA TCCAAGACAG 840 CTGAACCTTT GAAATTCCCA AAGAAGAGAG GTCCCAAACC TGGCAGCAAG AGGAAACCTC 900 GGACTTTGCT GAACCCACCA CCTGCCTCAC CAACAACCAG CACTCCTGAA CCGGATACCA 960 GCACTGTACC CCAGGATGCT GCCACCATCC CCAGCTCAGC CATGCAGGCC CCAACAGTTT 1020 GTATCTACTT GAACAAGAAT GGCAGCACAG GCCCCCACTT AGATAAGAAG AAGGTCCAGC 1080 AACTCCCTGA CCATTTTGGA CCAGCCCGTG CCTCTGTGGT GTTGCAGCAG GCTGTCCAGG 1140 CCTGTATCGA CTGTGCTTAT CACCAGAAAA CCGTCTTCAG CTTCCTCAAG CAAGGCCATG 1200 GTGGTGAGGT TATCTCAGCC GTGTTTGACC GGGAACAGCA TACCCTCAAC CTCCCAGCAG 1260 TCAACAGCAT CACCTACGTC CTCCGCTTCC TGGAGAAACT CTGCCACAAC CTTCGTAGTG 1320 ACAATCTGTT TGGCAACCAG CCCTTTACAC AGACTCACTT GTCACTCACT GCCATAGAGT 1380 ACAGCCACAG CCACGACAGG TACCTACCAG GTGAAACCTT TGTCCTGGGG AATAGTCTGG 1440 CCCGCTCCTT GGAACCACAC TCAGACTCAA TGGACTCTGC CTCAAATCCC ACCAACCTTG 1500 TCAGCACCTC CCAAAGGCAC CGGCCCTTGC TTTCATCCTG TGGCCTCCCA CCAAGCACTG 1560 CCTCAGCTGT GCGCAGGCTA TGCTCCAGGG GGTCGGACCG ATACCTGGAG AGCCGCGATG 1620 CCTCTCGACT GAGTGGCCGG GACCCCTCCT CGTGGACAGT CGAGGATGTG ATGCAGTTTG 1680 TCCGGGAAGC TGATCCTCAG CTTGGACCCC ACGCTGACCT GTTTCGCAAA CACGAGATCG 1740 ATGGCAAGGC CCTGCTGCTG CTGCGCAGTG ACATGATGAT GAAGTACATG GGCCTGAAGC 1800 TGGGGCCTGC ACTCAAGCTC TCCTACCACA TTGACCGGCT GAAGCAGGGC AAGTTCTGAA 1860 CCAGGAGAGG CAGCCTAGAC AACCAAGTGG CAGCAGGTGG GGGCATTCTT CTAAGAATGA 1920 GGGGCATCAG CCCACCCCAG GCACCTCAGT GGGGTTCCGG GCCACCTCAG GACTCCAAGA 1980 GGCTGTGTGG AGCCACCACT CCTAGCCACA GCTGCCATGA TAAGTCCTTC CATGAAGGAC 2040 TGAGGAGGGA GAGTGGGGGT CCAGGGCTGG TGCTGCTCTT CCCTCAGCTC TGCCGGGGCT 2100 CTAAGGTCCC TCTATTTATT TCTCAACCCT GGCTGGCCTC TCACCAGGAG TTTAGGCTGA 2160 ATGCCTTCCA CGTGATGGAG GAAAAGGCCA ACTCTGTCCT GGTCTTGCTG TGGCACCCCA 2220 TCGCCCCACA GCTCGTACCT TCTCACCAGA TTCCCCTGAA TCCAAACTCG TGGTGCAAAC 2280 CTCTACCTTT TTTACAAAAA GATCTTATTG TTAATTTATT GTTTCTGGCA CTTGGGCAAA 2340 CCCTGTAGTT AATACTCCTC CCACACTAGA CACTGGGTTT CAGGAGGAGG GAGACTGCCC 2400 TGCTTTGGTC CCAGAGAGGC CCTCTGCAGA TAGGCGTGGC CCCTCTTCAG AGGACACTAC 2460 CCTAGGGCAC TTTCTCTTTG AGGTGGAGAG ACCCATAAAG CCTTGACCAC ATCACTCCAT 2520 ATGGGGAGGA GAAGGATCCC TGTCACCTTC TCCTCTCTTC ACGGGGCCCT TTTGCAGCCC 2580 TAGGCCTCAT CTGTGGGAAG GGAGTCCCTG GCTCATACTG CCCCCACCAC AGCTCCTTGC 2640 CCTGGCCAGA ACTGCTGTCG AAGAAAATCA GGCCGGAAGG CCAAGAAGGC GCTAAGGGGG 2700 ATGGGAGGGC AGGTTTTCCA GGCTGGAGTC GGTTCCACCC ACTCGCCTGT CCACAGGCTT 2760 CCTTGTAAGC AAGTCAGCAG CACAGCTACT CACGCTGCCA TCTGGACTTA TTTTATGTCA 2820 ATCTGTTTAT AAATAAAAAC CAATATAGGG AATTC 2855 (2) INFORMATION FOR SEQ ID NO:2: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 620 amino acids (B) TYPE: amino acid (C) STRANDEDNESS: Single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (Xi) SEQUENCE DESCRIPTION: SEQ ID NO:2: Ile Pro Asn His Asn Asn Ala Gly His Phe Thr Trp Asp Lys Tyr Leu 1 5 10 15 Lys Glu Thr Cys Ser Val Pro Ala Pro Val His Cys Phe Lys Gin Ser 20 25 30 Tyr Thr Pro Pro Ser Asn Glu Phe Lys Ile Ser Met Lys Leu Glu Ala 35 40 45 Gin Asp Pro Arg Asn Thr Thr Ser Thr Cys Ile Ala Thr Val Val Gly 50 55 60 Leu Thr Gly Ala Arg Leu Arg Leu Arg Leu Asp Gly Ser Asp Asn Lys 65 70 75 80 Asn Asp Phe Trp Arg Leu Val Asp Ser Ala Glu Ile Gin Pro Ile Gly 85 90 95 Asn Cys Glu Lys Asn Gly Gly Met Leu Gin Pro Pro Leu Gly Phe Arg 100 105 110 Leu Asn Ala Ser Ser Trp Pro Met Phe Leu Leu Lys Thr Leu Asn Gly 115 120 125 Ala Glu Met Ala Pro Ile Arg Ile Phe His Lys Glu Pro Pro Ser Pro 130 135 140 Ser His Asn Phe Phe Lys Met Gly Met Lys Leu Glu Ala Val Asp Arg 145 150 155 160 Lys Asn Pro His Phe Ile Cys Pro Ala Thr Ile Gly Glu Val Arg Gly 165 170 175 Ser Glu Val Leu Val Thr Phe Asp Gly Trp Arg Gly Ala Phe Asp Tyr 180 185 190 Trp Cys Arg Phe Asp Ser Arg Asp lie Phe Pro Val Gly Trp Cys Ser 195 200 205 Leu Thr Gly Asp Asn Leu Gin Pro Pro Gly Thr Lys Val Val Ile Pro 210 215 220 Lys Asn Pro Tyr Pro Ala Ser Asp Val Asn Thr Glu Lys Pro Ser Ile 225 230 235 240 His Ser Ser Thr Lys Thr Val Leu Glu His Gin Pro Gly Gin Arg Gly 245 250 255 Arg Lys Pro Gly Lys Lys Arg Gly Arg Thr Pro Lys Thr Leu Ile Ser 260 265 270 His Pro Ile Ser Ala Pro Ser Lys Thr Ala Glu Pro Leu Lys Phe Pro 275 280 285 Lys Lys Arg Gly Pro Lys Pro Gly Ser Lys Arg Lys Pro Arg Thr Leu 290 295 300 Leu Asn Pro Pro Pro Ala Ser Pro Thr Thr Ser Thr Pro Glu Pro Asp 305 310 315 320 Thr ser Thr Val Pro Gin Asp Ala Ala Thr Ile Pro Ser Ser Ala Met 325 330 335 Gin Ala Pro Thr Val Cys Ile Tyr Leu Asn Lys Asn Gly Ser Thr Gly 340 345 350 Pro His Leu Asp Lys Lys Lys Val Gin Gin Leu Pro Aεj His Phe Gly 355 360 365 Pro Ala Arg Ala Ser Val Val Leu Gin Gin Ala Val Gin Ala Cys Ile 370 375 380 Asp Cys Ala Tyr His Gin Lys Thr Val Phe Ser Phe Leu Lys Gin Gly 385 390 395 400 His Gly Gly Glu Val Ile Ser Ala Val Phe Asp Arg Glu Gin His Thr 405 410 415 Leu Asn Leu Pro Ala Val Asn Ser Ile Thr Tyr Val Leu Arg Phe Leu 420 425 430 Glu Lys Leu Cys His Asn Leu Arg Ser Asp Asn Leu Phe Gly Asn Gin 435 440 445 Pro Phe Thr Gin Thr His Leu Ser Leu Thr Ala Ile Glu Tyr Ser His 450 455 460 Ser His Asp Arg Tyr Leu Pro Gly Glu Thr Phe Val Leu Gly Asn Ser 465 470 475 480 Leu Ala Arg Ser Leu Glu Pro His Ser Asp Ser Met Asp Ser Ala Ser 485 490 495 Asn Pro Thr Asn Leu Val Ser Thr Ser Gin Arg His Arg Pro Leu Leu 500 505 510 Ser Ser Cys Gly Leu Pro Pro Ser Thr Ala Ser Ala Val Arg Arg Leu 515 520 525 Cys Ser Arg Gly Ser Asp Arg Tyr Leu Glu Ser Arg Asp Ala Ser Arg 530 535 540 Leu Ser Gly Arg Asp Pro Ser Ser Trp Thr Val Glu Asp Val Met Gin 545 550 555 560 Phe Val Arg Glu Ala Asp Pro Gin Leu Gly Pro His Ala Asp Leu Phe 565 570 575 Arg Lys His Glu Ile Asp Gly Lys Ala Leu Leu Leu Leu Arg Ser Asp 580 585 590 Met Met Met Lys Tyr Met Gly Leu Lys Leu Gly Pro Ala Leu Lys Leu 595 600 605 Ser Tyr His Ile Asp Arg Leu Lys Gin Gly Lys Phe 610 615 620 (2) INFORMATION FOR SEQ ID NO:3: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 3327 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (genomic) (Xi) SEQUENCE DESCRIPTION: SEQ ID NO:3: GCGGAAACAT GGCGGCGGGA AGGGAGTGAG CCGCCCCGCG CCCCCGCCGC GCCCTCAGAT 60 GGAGAAATTA GCATACAAAG AAACTGACTT GTCAGAAGTC AGAGCAAGGT ATTGGTGGAT 120 CCAGGGATAA ATCCCAAACT TCTTAACCCC TAGACCGGTT TTTAGTCCAT TGACTATGCA 180 GCCTAATGTG ATAGACTGGA GTGATGTTAG AAAACACAAA TATGGTCACC TATCAGAGTC 240 TGCATCCCAA TATCAAGAAG CTGCTGACAT CCTGGATCTA GGGTTGTAAA GAAGATTACA 300 TGAGCTAATG GATGTGAAAA CATCTTAAAA ACTCTCAAAT ACTTTTCAAC TTTGGAGGAT 360 TATTATGATT TTCATTCTGT TCAGCGGCTA TACTCAGACT TTACTCTAAA AGTCAAATCT 420 TCTGACATTC TTTGAAGTGA AGCATTCTAT GAATGTGAGC TGAAGAAATG AATGAAATGA 480 AATAATGCAG GTCATTTTAC CTGGGACAAA TACCTAAAAG AAACATGTTC AGTCCCAGCG 540 CCTGTCCATT GCTTCAAGCA GTCCTACACA CCTCCAAGCA ACGAGTTCAA GATCAGTATG 600 AAATTGGAAG CACAGGACCC CAGGAACACC ACATCCACCT GTATTGCCAC AGTAGTTGGA 660 CTGACAGGTG CCCGCCTTCG CCTGCGCCTT GATGGGAGCG ACAACAAAAA TGACTTCTGG 720 CGGCTGGTTG ACTCAGCTGA AATCCAGCCT ATTGGGAACT GTGAAAAGAA TGGGGGTATG 780 CTACAGCCAC CTCTTGGATT TCGGCTGAAT GCGTCTTCTT GGCCCATGTT CCTTTTGAAG 840 ACGCTAAATG GAGCAGAGAT GGCTCCCATC AGGATTTTCC ACAAGGAGCC ACCATCGCCT 900 TCCCACAACT TCTTCAAAAT GGGAATGAAG CTAGAAGCTG TGGACAGGAA GAACCCTCAT 960 TTCATTTGCC CAGCCACTAT TGGGGAGGTT CGGGGCTCAG AGGTGCTTGT CACTTTTGAT 1020 GGGTGGCGAG GGGCCTTTGA CTACTGGTGC CGCTTCGACT CCCGAGACAT CTTCCCTGTG 1080 GGCTGGTGTT CCTTGACTGG AGACAACCTG CAGCCTCCTG GCACCAAAGT TGTGATTCCA 1140 AAGAATCCCT ATCCTGCCTC CGATGTGAAT ACTGAGAAGC CCAGCATCCA CAGCAGCACC 1200 AAAACTGTCT TGGAACATCA ACCAGGGCAG AGGGGGCGTA AACCAGGAAA GAAGCGGGGC 1260 CGGACACCCA AGACCCTAAT TTCCCATCCC ATCTCTGCCC CATCCAAGAC AGCTGAACCT 1320 TTGAAATTCC CAAAGAAGAG AGGTCCCAAA CCTGGCAGCA AGAGGAAACC TCGGACTTTG 1380 CTGAACCCAC CACCTGCCTC ACCAACAACC AGCACTCCTG AACCGGATAC CAGCACTGTA 1440 CCCCAGGATG CTGCCACCAT CCCCAGCTCA GCCATGCAGG CCCCAACAGT TTGTATCTAC 1500 TTGAACAAGA ATGGCAGCAC AGGCCCCCAC TTAGATAAGA AGAAGGTCCA GCAACTCCCT 1560 GACCATTTTG GACCAGCCCG TGCCTCTGTG GTGTTGCAGC AGGCTGTCCA GGCCTGTATC 1620 GACTGTGCTT ATCACCAGAA AACCGTCTTC AGCTTCCTCA AGCAAGGCCA TGGTGGTGAG 1680 GTTATCTCAG CCGTGTTTGA CCGGGAACAG CATACCCTCA ACCTCCCAGC AGTCAACAGC 1740 ATCACCTACG TCCTCCGCTT CCTGGAGAAA CTCTGCCACA ACCTTCGTAG TGACAATCTG 1800 TTTGGCAACC AGCCCTTTAC ACAGACTCAC TTGTCACTCA CTGCCATAGA GTACAGCCAC 1860 AGCCACGACA GGTACCTACC AGGTGAAACC TTTGTCCTGG GGAATAGTCT GGCCCGCTCC 1920 TTGGAACCAC ACTCAGACTC AATGGACTCT GCCTCAAATC CCACCAACCT TGTCAGCACC 1980 TCCCAAAGGC ACCGGCCCTT GCTTTCATCC TGTGGCCTCC CACCAAGCAC TGCCTCAGCT 2040 GTGCGCAGGC TATGCTCCAG GGGGTCGGAC CGATACCTGG AGAGCCGCGA TGCCTCTCGA 2100 CTGAGTGGCC GGGACCCCTC CTCGTGGACA GTCGAGGATG TGATGCAGTT TGTCCGGGAA 2160 GCTGATCCTC AGCTTGGACC CCACGCTGAC CTGTTTCGCA AACACGAGAT CGATGGCAAG 2220 GCCCTGCTGC TGCTGCGCAG TGACATGATG ATGAAGTACA TGGGCCTGAA GCTGGGGCCT 2280 GCACTCAAGC TCTCCTACCA CATTGACCGG CTGAAGCAGG GCAAGTTCTG AACCAGGAGA 2340 GGCAGCCTAG ACAACCAAGT GGCAGCAGGT GGGGGCATTC TTCTAAGAAT GAGGGGCATC 2400 AGCCCACCCC AGGCACCTCA GTGGGGTTCC GGGCCACCTC AGGACTCCAA GAGGCTGTGT 2460 GGAGCCACCA CTCCTAGCCA CAGCTGCCAT GATAAGTCCT TCCATGAAGG ACTGAGGAGG 2520 GAGAGTGGGG GTCCAGGGCT GGTGCTGCTC TTCCCTCAGC TCTGCCGGGG CTCTAAGGTC 2580 CCTCTATTTA TTTCTCAACC CTGGCTGGCC TCTCACCAGG AGTTTAGGCT GAATGCCTTC 2640 CACGTGATGG AGGAAAAGGC CAACTCTGTC CTGGTCTTGC TGTGGCACCC CATCGCCCCA 2700 CAGCTCGTAC CTTCTCACCA GATTCCCCTG AATCCAAACT CGTGGTGCAA ACCTCTACCT 2760 TTTTTACAAA AAGATCTTAT TGTTAATTTA TTGTTTCTGG CACTTGGGCA AACCCTGTAG 2820 TTAATACTCC TCCCACACTA GACACTGGGT TTCAGGAGGA GGGAGACTGC CCTGCTTTGG 2880 TCCCAGAGAG GCCCTCTGCA GATAGGCGTG GCCCCTCTTC AGAGGACACT ACCCTAGGGC 2940 ACTTTCTCTT TGAGGTGGAG AGACCCATAA AGCCTTGACC ACATCACTCC ATATGGGGAG 3000 GAGAAGGATC CCTGTCACCT TCTCCTCTCT TCACGGGGCC CTTTTGCAGC CCTAGGCCTC 3060 ATCTGTGGGA AGGGAGTCCC TGGCTCATAC TGCCCCCACC ACAGCTCCTT GCCCTGGCCA 3120 GAACTGCTGT CGAAGAAAAT CAGGCCGGAA GGCCAAGAAG GCGCTAAGGG GGATGGGAGG 3180 GCAGGTTTTC CAGGCTGGAG TCGGTTCCAC CCACTCGCCT GTCCACAGGC TTCCTTGTAA 3240 GCAAGTCAGC AGCACAGCTA CTCACGCTGC CATCTGGACT TATTTTATGT CAATCTGTTT 3300 ATAAATAAAA ACCAATATAG GGAATTC 3327 (2) INFORMATION FOR SEQ ID NO:4: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 577 amino acids (B) TYPE: amino acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (Xi) SEQUENCE DESCRIPTION: SEQ ID NO:4: Met Lys Leu Glu Ala Gin Asp Pro Arg Asn Thr Thr Ser Thr Cys lie 1 5 10 15 Ala Thr Val Val Gly Leu Thr Gly Ala Arg Leu Arg Leu Arg Leu Asp 20 25 30 Gly Ser Asp Asn Lys Asn Asp Phe Trp Arg Leu Val Asp Ser Ala Glu 35 40 45 Ile Gin Pro Ile Gly Asn Cys Glu Lys Asn Gly Gly Met Leu Gin Pro 50 55 60 Pro Leu Gly Phe Arg Leu Asn Ala Ser Ser Trp Pro Met Phe Leu Leu 65 70 75 80 Lys Thr Leu Asn Gly Ala Glu Met Ala Pro Ile Arg Ile Phe His Lys 85 90 95 Glu Pro Pro Ser Pro Ser His Asn Phe Phe Lys Met Gly Met Lys Leu 100 105 110 Glu Ala Val Asp Arg Lys Asn Pro His Phe Ile Cys Pro Ala Thr Ile 115 120 125 Gly Glu Val Arg Gly Ser Glu Val Leu Val Thr Phe Asp Gly Trp Arg 130 135 140 Gly Ala Phe Asp Tyr Trp Cys Arg Phe Asp Ser Arg Asp Ile Phe Pro 145 150 155 160 Val Gly Trp Cys Ser Leu Thr Gly Asp Asn Leu Gin Pro Pro Gly Thr 165 170 175 Lys Val Val Ile Pro Lys Asn Pro Tyr Pro Ala Ser Asp Val Asn Thr 180 185 190 Glu Lys Pro Ser Ile His Ser Ser Thr Lys Thr Val Leu Glu His Gin 195 200 205 Pro Gly Gin Arg Gly Arg Lys Pro Gly Lys Lys Arg Gly Arg Thr Pro 210 215 220 Lys Thr Leu Ile Ser His Pro Ile Ser Ala Pro Ser Lys Thr Ala Glu 225 230 235 240 Pro Leu Lys Phe Pro Lys Lys Arg Gly Pro Lys Pro Gly Ser Lys Arg 245 250 255 Lys Pro Arg Thr Leu Leu Asn Pro Pro Pro Ala Ser Pro Thr Thr Ser 260 265 270 Thr Pro Glu Pro Asp Thr Ser Thr Val Pro Gin Asp Ala Ala Thr Ile 275 280 285 Pro Ser Ser Ala Met Gin Ala Pro Thr Val Cys Ile Tyr Leu Asn Lys 290 295 300 Asn Gly Ser Thr Gly Pro His Leu Asp Lys Lys Lys Val Gin Gin Leu 305 310 315 320 Pro Asp His Phe Gly Pro Ala Arg Ala Ser Val Val Leu Gin Gin Ala 325 330 335 Val Gin Ala Cys Ile Asp Cys Ala Tyr His Gin Lys Thr Val Phe Ser 340 345 350 Phe Leu Lys Gin Gly His Gly Gly Glu Val Ile Ser Ala Val Phe Asp 355 360 365 Arg Glu Gin His Thr Leu Asn Leu Pro Ala Val Asn Ser Ile Thr Tyr 370 375 380 Val Leu Arg Phe Leu Glu Lys Leu Cys His Asn Leu Arg Ser Asp Asn 385 390 395 400 Leu Phe Gly Asn Gin Pro Phe Thr Gin Thr His Leu Ser Leu Thr Ala 405 410 415 Ile Glu Tyr Ser His Ser His Asp Arg Tyr Leu Pro Gly Glu Thr Phe 420 425 430 Val Leu Gly Asn Ser Leu Ala Arg Ser Leu Glu Pro His Ser Asp Ser 435 440 445 Met Asp Ser Ala Ser Asn Pro Thr Asn Leu Val Ser Thr Ser Gin Arg 450 455 460 His Arg Pro Leu Leu Ser Ser Cys Gly Leu Pro Pro Ser Thr Ala Ser 465 470 475 480 Ala Val Arg Arg Leu Cys Ser Arg Gly Ser Asp Arg Tyr Leu Glu Ser 485 490 495 Arg Asp Ala Ser Arg Leu Ser Gly Arg Asp Pro Ser Ser Trp Thr Val 500 505 510 Glu Asp Val Met Gin Phe Val Arg Glu Ala Asp Pro Gin Leu Gly Pro 515 520 525 His Ala Asp Leu Phe Arg Lys His Glu Ile Asp Gly Lys Ala Leu Leu 530 535 540 Leu Leu Arg Ser Asp Met Met Met Lys Tyr Met Gly Leu Lys Leu Gly 545 550 555 560 Pro Ala Leu Lys Leu Ser Tyr His Ile Asp Arg Leu Lys Gin Gly Lys 565 570 575 Phe (2) INFORMATION FOR SEQ ID NO:5: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 3255 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (genomic) (Xi) SEQUENCE DESCRIPTION: SEQ ID NO:5: CGGAAACATG GCGGCGGGAA GGGAGTGAGC CGCCCCGCGC CCCCGCCGCG CCCTCAGATG 60 GAGAAATTAG CATACAAAGA AACTGACTTG TCAGAAGTCA GAGCAAGGTA TTGGTGGATC 120 CAGGGATAAA TCCCAAACTT CTTAACCCCT AGACCGGTTT TTAGTCCATT GACTATGCAG 180 CCTAATGTGA TAGACTGGAG TGATGTTAGA AAACACAAAT ATGGTCACCT ATCAGAGTCT 240 GCATCCCAAT ATCAAGAAGC TGCTGACATC CTGGATCTAG GGTTGTAAAG AAGATTACAT 300 GAGCTAATGG ATGTGAAAAC ATCTTAAAAA CTCTCAAATA CTTTTCAACT TTGGAGGATT 360 ATTATGATTT TCATTCTGTT CAGCGGCCAT ACTCAGACTT TACTCTAAAA GTCAAATCTT 420 CTGACATTCT TTGAAGTGAA GCATTCTATG AATGTGAGCT GAAGAAATGA ATGAAATGAA 480 ATAATGCAGT CCTACACACC TCCAAGCAAC GAGTTCAAGA TCAGTATGAA ATTGGAAGCA 540 CAGGACCCCA GGAACACCAC ATCCACCTGT ATTGCCACAG TAGTTGGACT GACAGGTGCC 600 CGCCTTCGCC TGCGCCTTGA TGGGAGCGAC AACAAAAATG ACTTCTGGCG GCTGGTTGAC 660 TCAGCTGAAA TCCAGCCTAT TGGGAACTGT GAAAAGAATG GGGGTATGCT ACAGCCACCT 720 CTTGGATTTC GGCTGAATGC GTCTTCTTGG CCCATGTTCC TTTTGAAGAC GCTAAATGGA 780 GCAGAGATGG CTCCCATCAG GATTTTCCAC AAGGAGCCAC CATCGCCTTC CCACAACTTC 840 TTCAAAATGG GAATGAAGCT AGAAGCTGTG GACAGGAAGA ACCCTCATTT CATTTGCCCA 900 GCCACTATTG GGGAGGTTCG GGGCTCAGAG GTGCTTGTCA CTTTTGATGG GTGGCGAGGG 960 GCCTTTGACT ACTGGTGCCG CTTCGACTCC CGAGACATCT TCCCTGTGGG CTGGTGTTCC 1020 TTGACTGGAG ACAACCTGCA GCCTCCTGGC ACCAAAGTTG TGATTCCAAA GAATCCCTAT 1080 CCTGCCTCCG ATGTGAATAC TGAGAAGCCC AGCATCCACA GCAGCACCAA AACTGTCTTG 1140 GAACATCAAC CAGGGCAGAG GGGGCGTAAA CCAGGAAAGA AGCGGGGCCG GACACCCAAG 1200 ACCCTAATTT CCCATCCCAT CTCTGCCCCA TCCAAGACAG CTGAACCTTT GAAATTCCCA 1260 AAGAAGAGAG GTCCCAAACC TGGCAGCAAG AGGAAACCTC GGACTTTGCT GAACCCACCA 1320 CCTGCCTCAC CAACAACCAG CACTCCTGAA CCGGATACCA GCACTGTACC CCAGGATGCT 1380 GCCACCATCC CCAGCTCAGC CATGCAGGCC CCAACAGTTT GTATCTACTT GAACAAGAAT 1440 GGCAGCACAG GCCCCCACTT AGATAAGAAG AAGGTCCAGC AACTCCCTGA CCATTTTGGA 1500 CCAGCCCGTG CCTCTGTGGT GTTGCAGCAG GCTGTCCAGG CCTGTATCGA CTGTGCTTAT 1560 CACCAGAAAA CCGTCTTCAG CTTCCTCAAG CAAGGCCATG GTGGTGAGGT TATCTCAGCC 1620 GTGTTTGACC GGGAACAGCA TACCCTCAAC CTCCCAGCAG TCAACAGCAT CACCTACGTC 1680 CTCCGCTTCC TGGAGAAACT CTGCCACAAC CTTCGTAGTG ACAATCTGTT TGGCAACCAG 1740 CCCTTTACAC AGACTCACTT GTCACTCACT GCCATAGAGT ACAGCCACAG CCACGACAGG 1800 TACCTACCAG GTGAAACCTT TGTCCTGGGG AATAGTCTGG CCCGCTCCTT GGAACCACAC 1860 TCAGACTCAA TGGACTCTGC CTCAAATCCC ACCAACCTTG TCAGCACCTC CCAAAGGCAC 1920 CGGCCCTTGC TTTCATCCTG TGGCCTCCCA CCAAGCACTG CCTCAGCTGT GCGCAGGCTA 1980 TGCTCCAGGG GGTCGGACCG ATACCTGGAG AGCCGCGATG CCTCTCGACT GAGTGGCCGG 2040 GACCCCTCCT CGTGGACAGT CGAGGATGTG ATGCAGTTTG TCCGGGAAGC TGATCCTCAG 2100 CTTGGACCCC ACGCTGACCT GTTTCGCAAA CACGAGATCG ATGGCAAGGC CCTGCTGCTG 2160 CTGCGCAGTG ACATGATGAT GAAGTACATG GGCCTGAAGC TGGGGCCTGC ACTCAAGCTC 2220 TCCTACCACA TTGACCGGCT GAAGCAGGGC AAGTTCTGAA CCAGGAGAGG CAGCCTAGAC 2280 AACCAAGTGG CAGCAGGTGG GGGCATTCTT CTAAGAATGA GGGGCATCAG CCCACCCCAG 2340 GCACCTCAGT GGGGTTCCGG GCCACCTCAG GACTCCAAGA GGCTGTGTGG AGCCACCACT 2400 CCTAGCCACA GCTGCCATGA TAAGTCCTTC CATGAAGGAC TGAGGAGGGA GAGTGGGGGT 2460 CCAGGGCTGG TGCTGCTCTT CCCTCAGCTC TGCCGGGGCT CTAAGGTCCC TCTATTTATT 2520 TCTCAACCCT GGCTGGCCTC TCACCAGGAG TTTAGGCTGA ATGCCTTCCA CGTGATGGAG 2580 GAAAAGGCCA ACTCTGTCCT GGTCTTGCTG TGGCACCCCA TCGCCCCACA GCTCGTACCT 2640 TCTCACCAGA TTCCCCTGAA TCCAAACTCG TGGTGCAAAC CTCTACCTTT TTTACAAAAA 2700 GATCTTATTG TTAATTTATT GTTTCTGGCA CTTGGGCAAA CCCTGTAGTT AATACTCCTC 2760 CCACACTAGA CACTGGGTTT CAGGAGGAGG GAGACTGCCC TGCTTTGGTC CCAGAGAGGC 2820 CCTCTGCAGA TAGGCGTGGC CCCTCTTCAG AGGACACTAC CCTAGGGCAC TTTCTCTTTG 2880 AGGTGGAGAG ACCCATAAAG CCTTGACCAC ATCACTCCAT ATGGGGAGGA GAAGGATCCC 2940 TGTCACCTTC TCCTCTCTTC ACGGGGCCCT TTTGCAGCCC TAGGCCTCAT CTGTGGGAAG 3000 GGAGTCCCTG GCTCATACTG CCCCCACCAC AGCTCCTTGC CCTGGCCAGA ACTGCTGTCG 3060 AAGAAAATCA GGCCGGAAGG CCAAGAAGGC GCTAAGGGGG ATGGGAGGGC AGGTTTTCCA 3120 GGCTGGAGTC GGTTCCACCC ACTCGCCTGT CCACAGGCTT CCTTGTAAGC AAGTCAGCAG 3180 CACAGCTACT CACGCTGCCA TCTGGACTTA TTTTATGTCA ATCTGTTTAT AAATAAAAAC 3240 CAATATAGGG AATTC 3255 (2) INFORMATION FOR SEQ ID NO:6: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 591 amino acids (B) TYPE: amino acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (xi) SEQUENCE DESCRIPTION: SEQ ID NO:6: Met Gin Ser Tyr Thr Pro Pro Ser Asn Glu Phe Lys Ile Ser Met Lys 1 5 10 15 Leu Glu Ala Gin Asp Pro Arg Asn Thr Thr Ser Thr Cys Ile Ala Thr 20 25 30 Val Val Gly Leu Thr Gly Ala Arg Leu Arg Leu Arg Leu Asp Gly Ser 35 40 45 Asp Asn Lys Asn Asp Phe Trp Arg Leu Val Asp Ser Ala Glu Ile Gin 50 55 60 Pro Ile Gly Asn Cys Glu Lys Asn Gly Gly Met Leu Gin Pro Pro Leu 65 70 75 80 Gly Phe Arg Leu Asn Ala Ser Ser Trp Pro Met Phe Leu Leu Lys Thr 85 90 95 Leu Asn Gly Ala Glu Met Ala Pro Ile Arg Ile Phe His Lys Glu Pro 100 105 110 Pro Ser Pro Ser His Asn Phe Phe Lys Met Gly Met Lys Leu Glu Ala 115 120 125 Val Asp Arg Lys Asn Pro His Phe Ile Cys Pro Ala Thr Ile Gly Glu 130 135 140 Val Arg Gly Ser Glu Val Leu Val Thr Phe Asp Gly Trp Arg Gly Ala 145 150 155 160 Phe Asp Tyr Trp Cys Arg Phe Asp Ser Arg Asp Ile Phe Pro Val Gly 165 170 175 Trp Cys Ser Leu Thr Gly Asp Asn Leu Gin Pro Pro Gly Thr Lys Val 180 185 190 Val lie Pro Lys Asn Pro Tyr Pro Ala Ser Asp Val Asn Thr Glu Lys 195 200 205 Pro ser Ile His Ser Ser Thr Lys Thr Val Leu Glu His Gin Pro Gly 210 215 220 Gin Arg Gly Arg Lys Pro Gly Lys Lys Arg Gly Arg Thr Pro Lys Thr 225 230 235 240 Leu Ile Ser His Pro Ile Ser Ala Pro Ser Lys Thr Ala Glu Pro Leu 245 250 255 Lys Phe Pro Lys Lys Arg Gly Pro Lys Pro Gly Ser Lys Arg Lys Pro 260 265 270 Arg Thr Leu Leu Asn Pro Pro Pro Ala Ser Pro Thr Thr Ser Thr Pro 275 280 285 Glu Pro Asp Thr Ser Thr Val Pro Gin Asp Ala Ala Thr Ile Pro Ser 290 295 300 Ser Ala Met Gin Ala Pro Thr Val Cys Ile Tyr Leu Asn Lys Asn Gly 305 310 315 320 Ser Thr Gly Pro His Leu Asp Lys Lys Lys Val Gin Gin Leu Pro Asp 325 330 335 His Phe Gly Pro Ala Arg Ala Ser Val Val Leu Gin Gin Ala Val Gin 340 345 350 Ala Cys Ile Asp Cys Ala Tyr His Gin Lys Thr Val Phe Ser Phe Leu 355 360 365 Lys Gin Gly His Gly Gly Glu Val Ile Ser Ala Val Phe Asp Arg Glu 370 375 380 Gin His Thr Leu Asn Leu Pro Ala Val Asn Ser Ile Thr Tyr Val Leu 385 390 395 400 Arg Phe Leu Glu Lys Leu Cys His Asn Leu Arg Ser Asp Asn Leu Phe 405 410 415 Gly Asn Gin Pro Phe Thr Gin Thr His Leu Ser Leu Thr Ala Ile Glu 420 425 430 Tyr Ser His Ser His Asp Arg Tyr Leu Pro Gly Glu Thr Phe Val Leu 435 440 445 Gly Asn Ser Leu Ala Arg Ser Leu Glu Pro His Ser Asp Ser Met Asp 450 455 460 Ser Ala Ser Asn Pro Thr Asn Leu Val Ser Thr Ser Gin Arg His Arg 465 470 475 480 Pro Leu Leu Ser Ser Cys Gly Leu Pro Pro Ser Thr Ala Ser Ala Val 485 490 495 Arg Arg Leu Cys Ser Arg Gly Ser Asp Arg Tyr Leu Glu Ser Arg Asp 500 505 510 Ala Ser Arg Leu Ser Gly Arg Asp Pro Ser Ser Trp Thr Val Glu Asp 515 520 525 Val Met Gin Phe Val Arg Glu Ala Asp Pro Gin Leu Gly Pro His Ala 530 535 540 Asp Leu Phe Arg Lys His Glu Ile Asp Gly Lys Ala Leu Leu Leu Leu 545 550 555 560 Arg Ser Asp Met Met Met Lys Tyr Met Gly Leu Lys Leu Gly Pro Ala 565 570 575 Leu Lys Leu Ser Tyr His Ile Asp Arg Leu Lys Gin Gly Lys Phe 580 585 590 (2) INFORMATION FOR SEQ ID NO:7: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 3065 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (genomic) (xi) SEQUENCE DESCRIPTION: SEQ ID NO:7: CTAGAATTCA GCGGCCGCTT AATTCTAGCT GGATGGGAGT GAGCCGCCCG CGCCCCGCGC 60 CGCTGTCGCC CTCAGATGGA GAGATTAAAT CACAGAGAAA CTAACTTGTC AGAGGTCAGA 120 GCAAGGTGTA GGTGGATCCA GGAATAAGTC TCAAGCTTCA TCACTCCTTG CTTAGTTTTA 180 GGCCATTGAC TATGCAGCCT AGTGACTGGA ATGATGTGAA AAAACCTAAG TATGGTCACT 240 TGTCAGAGTC TGCATCTCAA TATCAAGAAT CTGTTGACAT CCTGGAGCTA GCATCTAGTG 300 CTTTTTGCAT GGCCCAAAGG GGCCCTGTGC TGCTCCACTA CAGAGGAAAA TTCAAGAAAT 360 GCTGGTTTGC TACAGTGTTT TAGCTTGTGA GAGTCTCTGG GACCTTCCCT GCTCCATCAT 420 GGGGTCACCT CTAGGTCATT TTACCTGGGA CAAATACCTA AAAGAAACAT GTTCAGTCCC 480 AGCGCCTGTC CATTGCTTCA AGCAGTCCTA CACACCTCCA AGTAATGAGT TCAAGATCAG 540 CATGAAATTG GAAGCACAGG ATCCCAGGAA CACCACATCC ACCTGTATTG CCACGGTCGT 600 TGGATTGACA GGTGCCCGAC TTCGTCTGCG CCTTGATGGC AGTGACAACA AGAATGACTT 660 CTGGAGACTG GTTGACTCCT CTGAAATCCA GCCAATTGGA AACTGTGAGA AGAATGGCGG 720 GATGCTGCAG CCCCCTCTAG GATTTCGGCT GAATGCCTCC TCTTGGCCCA TGTTCCTTTT 780 GAAGACACTA AATGGAGCAG AGATGGCTCC CATCAAGATT TTCCATAAGG AGCCACCATC 840 ACCTTCCCAC AACTTCTTCA AAATGGGAAT GAAGTTAGAA GCTGTAGACA GAAAGAACCC 900 TCATTTCATT TGCCCAGCCA CTATTGGAGA AGTTCGAGGC GCAGAAGTGC TAGTCACCTT 960 TGATGGGTGG CGAGGCGCAT TTGACTACTG GTGCCGCTTT GACTCCCGGG ACATCTTTCC 1020 TGTGGGCTGG TGTTCTTTGA CTGGAGATAA CCTGCAGCCA CCTGGCACCA AAGTTGTGAT 1080 TCCAAAGAAT CCGTCCCCTT CATCTGATGT GAGCACTGAG AAGCCCAGCA TCCACAGCAC 1140 CAAAACTGTC TTGGAGCATC AGCCAGGGCA GAGGGGCCGC AAACCAGGAA AGAAGCGGGG 1200 CCGAACACCC AAGATCCTTA TTCCCCATCC CACCTCTACC CCATCCAAGT CAGCTGAACC 1260 TTTGAAATTT CCAAAGAAGA GAGGTCCCAA GCCTGGCAGT AAGAGGAAAC CTCGGACTTT 1320 GCTGAGCCCA CCACCCACCT CACCAACAAC CAGCACCCCT GAACCGGACA CCAGCACTGT 1380 TCCTCAAGAT GCTGCCACCG TCCCAAGTTC AGCCATGCAG GCCCCCACAG TTTGTATCTA 1440 CTTGAACAAG AGCGGCAGCA CGGGCCCCCA CCTGGATAAG AAGAAGATCC AACAACTCCC 1500 TGACCATTTT GGGCCAGCCC GTGCCTCTGT GGTGCTGCAG CAGGCTGTCC AGGCTTGCAT 1560 TGACTGTGCT TATCACCAGA AAACTGTCTT CAGCTTCCTC AAACAGGGCC ACGGCGGTGA 1620 AGTCATTTCA GCCGTGTTTG ACCGGGAACA GCACACTCTG AACCTCCCAG CAGTCAACAG 1680 CATCACCTAT GTCCTCCGTT TCCTGGAGAA GCTCTGCCAC AACCTTCGAA GTGACAATCT 1740 GTTTGGCAAC CAGCCCTTTA CACAGACTCA CTTATCACTC ACTGCCACAG AGTATAATCA 1800 CAACCACGAC AGGTACCTAC CAGGTGAAAC CTTTGTCCTG GGGAATAGCC TGGCCCGGTC 1860 CTTGGAGACA CACTCAGACC TGATGGATTC TGCCTTGAAG CCTGCCAACC TTGTCAGCAC 1920 ATCCCAAAAC CTTCGGACTC CTGGCTATCG GCCCTTGCTT CCCTCCTGTG GCCTCCCATT 1980 AAGCACTGTC TCTGCTGTGC GTAGGCTCTG CTCTAAGGGA GTGTTAAAAG GAAAAAAGGA 2040 AAGAAGGGAT GTGGAGTCAT TTTGGAAACT AAATCATTCC CCAGGGTCAG ATCGACATCT 2100 GGAGAGCCGA GATCCCCCTC GCCTGAGTGG CCGGGACCCC TCCTCATGGA CAGTGGAGGA 2160 TGTGATGCAG TTTGTCCGGG AAGCCGATCC TCAGCTTGGA TCCCATGCTG ACCTCTTCCG 2220 AAAACATGAA ATCGATGGCA AGGCCCTGCT CCTGCTGCGC AGTGACATGA TGATGAAGTA 2280 CATGGGCCTG AAGCTGGGGC CCGCCCTCAA GCTCTCCTTT CACATTGACC GGCTGAAGCA 2340 GGGCAAGTTC TGAACAGGAG GCACTCTTCT CCCAGGAAGC CGCCCGCCAG CTCCCAGGCA 2400 CCTTAGTAGG GCTCTGGGTG ACCTCAGGAC TCTAGGAGGC TGGAAAGCCA CCACTGCTAC 2460 CCTTCCTGCC CTGATGTGTC CTTCCATGAA GGACTGAGGA GGGAACAGTG GGCCCGGGGC 2520 TGGTGCTGCT CTTCCCCTTA GCCTGCTGTG GCTCCCAGGC CCTTCTATTT ATTTCTCAAG 2580 GCTAGCCAGC CTCTCTCCAC AAGTTTAGAC GAGCACCTTT CAAGAGATGA GGAAGACGCC 2640 AGCCCTAGGA CCTTGAAAGG CCCTGGTACC CAGGCCCCTT GCCACCTCCT GGGCTTGGCA 2700 TAGTGTCCCA AGGCCCCCAG CTCATGCCTT CTCACTGGAT CCCCAGACTC TGAACTTATG 2760 GTGCAGACCT TTTTTAAAGA GATCCTTTCT TATTGCTAAT TTATTGCTTC TGGCGTTTGG 2820 ACTTAATGCT TCTCTTGCAC CAAACAGTTT TTTGGAAGAG GGAGACCATC CTCTGGTCCA 2880 GAGAGGGCCT CTCCAGAGAA GTGTGGCCTA TTTCAGAAGA CACTGCCCTA GGGCACTTCT 2940 TCTCTGGAAT GGACAAAGTA TTTGGCTCAC TGAGCAAAAG GTGAGGGTCT CTCTTCCTAC 3000 ACTGGGTCCT TTGTAGCCCC AGTCTTCATC TCTGATGGAG TTTCCCCTCA CCCTGCCCTC 3060 GTGCC 3065 (2) INFORMATION FOR SEQ ID NO:8: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 664 amino acids (B) TYPE: amino acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (xi) SEQUENCE DESCRIPTION: SEQ ID NO:8: Met Leu Val Cys Tyr Ser Val Leu Ala Cys Glu Ser Leu Trp Asp Leu 1 5 10 15 Pro Cys Ser Ile Met Gly Ser Pro Leu Gly His Phe Thr Trp Asp Lys 20 25 30 Tyr Leu Lys Glu Thr Cys Ser Val Pro Ala Pro Val His Cys Phe Lys 35 40 45 Gin Ser Tyr Thr Pro Pro Ser Asn Glu Phe Lys Ile Ser Met Lys Leu 50 55 60 Glu Ala Gin Asp Pro Arg Asn Thr Thr Ser Thr Cys Ile Ala Thr Val 65 70 75 80 Val Gly Leu Thr Gly Ala Arg Leu Arg Leu Arg Leu Asp Gly Ser Asp 85 90 95 Asn Lys Asn Asp Phe Trp Arg Leu Val Asp Ser Ser Glu Ile Gin Pro 100 105 110 Ile Gly Asn Cys Glu Lys Asn Gly Gly Met Leu Gin Pro Pro Leu Gly 115 120 125 Phe Arg Leu Asn Ala Ser Ser Trp Pro Met Phe Leu Leu Lys Thr Leu 130 135 140 Asn Gly Ala Glu Met Ala Pro Ile Lys Ile Phe His Lys Glu Pro Pro 145 150 155 160 Ser Pro Ser His Asn Phe Phe Lys Met Gly Met Lys Leu Glu Ala Val 165 170 175 Asp Arg Lys Asn Pro His Phe Ile Cys Pro Ala Thr Ile Gly Glu Val 180 185 190 Arg Gly Ala Glu Val Leu Val Thr Phe Asp Gly Trp Arg Gly Ala Phe 195 200 205 Asp Tyr Trp Cys Arg Phe Asp Ser Arg Asp Ile Phe Pro Val Gly Trp 210 215 220 Cys Ser Leu Thr Gly Asp Asn Leu Gin Pro Pro Gly Thr Lys Val Val 225 230 235 240 Ile Pro Lys Asn Pro Ser Pro Ser Ser Asp Val Ser Thr Glu Lys Pro 245 250 255 Ser Ile His Ser Thr Lys Thr Val Leu Glu His Gin Pro Gly Gin Arg 260 265 270 Gly Arg Lys Pro Gly Lys Lys Arg Gly Arg Thr Pro Lys Ile Leu Ile 275 280 285 Pro His Pro Thr Ser Thr Pro Ser Lys Ser Ala Glu Pro Leu Lys Phe 290 295 300 Pro Lys Lys Arg Gly Pro Lys Pro Gly Ser Lys Arg Lys Pro Arg Thr 305 310 315 320 Leu Leu Ser Pro Pro Pro Thr Ser Pro Thr Thr Ser Thr Pro Glu Pro 325 330 335 Asp Thr Ser Thr Val Pro Gin Asp Ala Ala Thr Val Pro Ser Ser Ala 340 345 350 Met Gin Ala Pro Thr Val Cys Ile Tyr Leu Asn Lys Ser Gly Ser Thr 355 360 365 Gly Pro His Leu Asp Lys Lys Lys Ile Gin Gin Leu Pro Asp His Phe 370 375 380 Gly Pro Ala Arg Ala Ser Val Val Leu Gin Gin Ala Val Gin Ala Cys 385 390 395 400 Ile Asp Cys Ala Tyr His Gin Lys Thr Val Phe Ser Phe Leu Lys Gin 405 410 415 Gly His Gly Gly Glu Val Ile Ser Ala Val Phe Asp Arg Glu Gin His 420 425 430 Thr Leu Asn Leu Pro Ala Val Asn Ser Ile Thr Tyr Val Leu Arg Phe 435 440 445 Leu Glu Lys Leu Cys His Asn Leu Arg Ser Asp Asn Leu Phe Gly Asn 450 455 460 Gin Pro Phe Thr Gin Thr His Leu Ser Leu Thr Ala Thr Glu Tyr Asn 465 470 475 480 His Asn His Asp Arg Tyr Leu Pro Gly Glu Thr Phe Val Leu Gly Asn 485 490 495 Ser Leu Ala Arg Ser Leu Glu Thr His Ser Asp Leu Met Asp Ser Ala 500 505 510 Leu Lys Pro Ala Asn Leu Val Ser Thr Ser Gin Asn Leu Arg Thr Pro 515 520 525 Gly Tyr Arg Pro Leu Leu Pro Ser Cys Gly Leu Pro Leu Ser Thr Val 530 535 540 Ser Ala Val Arg Arg Leu Cys Ser Lys Gly Val Leu Lys Gly Lys Lys 545 550 555 560 Glu Arg Arg Asp Val Glu Ser Phe Trp Lys Leu Asn His Ser Pro Gly 565 570 575 Ser Asp Arg His Leu Glu Ser Arg Asp Pro Pro Arg Leu Ser Gly Arg 580 585 590 Asp Pro Ser Ser Trp Thr Val Glu Asp Val Met Gin Phe Val Arg Glu 595 600 605 Ala Asp Pro Gin Leu Gly Ser His Ala Asp Leu Phe Arg Lys His Glu 610 615 620 Ile Asp Gly Lys Ala Leu Leu Leu Leu Arg Ser Asp Met Met Met Lys 625 630 635 640 Tyr Met Gly Leu Lys Leu Gly Pro Ala Leu Lys Leu Ser Phe His Ile 645 650 655 Asp Arg Leu Lys Gin Gly Lys Phe 660

Claims: wRAττ.ς rτ ATrvπRn τ.ς- 1. An isolated mammaUan Sem polypeptide, comprising a sequence of at least 54 consecutive amino acids of a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6. 2. The polypeptide of claim 1 which comprises at least 60 consecutive amino acids from the selected sequence. 3. The polypeptide of claim 1 which comprises at least 65 consecutive amino acids from the selected sequence. 4. The polypeptide of claim 1 which comprises at least 75 consecutive amino acids from the selected sequence. 5. The polypeptide of claim 1 which comprises aU of the selected sequence. 6. An isolated mammaUan Sem polypeptide comprising a sequence which is at least 95% identical to a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6. 7. An isolated nucleic acid molecule that encodes a polypeptide of claim 1. 8. An isolated nucleic acid molecule comprising at least 30 contiguous nucleotides selected from the group of sequences consisting of SEQ ID NO: 1, SEQ ID NO:3, and SEQ ID NO: 5. 9. The nucleic acid molecule of claim 8 which comprises aU of the selected sequence. 10. An isolated nucleic acid molecule which encodes a polypeptide of claim 6. 11. An isolated nucleic acid molecule comprising a sequence which is at least 95% identical to a sequence selected from the group of sequences consisting of SEQ ID NO: 1, SEQ ID NO:3, and SEQ ID NO: 5. 12. An antibody preparation that specificaUy binds to a polypeptide of claim 6, and does not bind specificaUy to other human proteins. 13. A method of treating a neoplasm comprising: contacting a neoplasm with an effective amount of a therapeutic agent comprising a mammaUan Sem polypeptide which comprises a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6, whereby growth of the neoplasm is arrested. 14. A method of inducing ceU differentiation comprising: contacting a progenitor cell with a mammaUan Sem polypeptide which comprises a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6, whereby differentiation of the ceU is induced. 15. A method of regulating ceU growth comprising: contacting a ceU whose growth is uncontroUed with a mammalian Sem polypeptide which comprises a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6, whereby growth of the ceU is regulated. 16. A pharmaceutical composition comprising an effective amount of a therapeutic agent comprising a mammaUan Sem polypeptide which comprises a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO:4, and SEQ ID NO: 6, and a pharmaceuticaUy acceptable carrier. 17. A method of diagnosis of neoplasia comprising: contacting a tissue sample suspected of neoplasia isolated from a patient with an mammaUan Sem gene probe comprising at least 12 contiguous nucleotides of a sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 3, and SEQ ID NO: 5, wherein a tissue which underexpresses mammaUan San or expresses a variant mammaUan San is categorized as neoplastic. 18. The method of claim 17 wherein underexpression is determined by comparison to a normal tissue of the patient. 19. The method of claim 17 wherein a variant mammaUan San is determined by comparison to a normal tissue of the patient. 20. The method of claim 17 wherein said neoplasm is selected from the group consisting of colorectal adenocarcinoma, lung carcinoma, melanoma, lymphoma, and leukemia. 21. A method of diagnosing neoplasia comprising: contacting PCR primers which specificaUy hybridize with an mammaUan San gene sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 3, and SEQ ID NO: 5, with nucleic acids isolated from a tissue suspected of neoplasia; ampUfying mammaUan San sequences in the nucleic acids of the tissue; and detecting a mutation in the amplified sequence, wherein a mutation is identified when the ampUfied sequence differs from a sequence similarly ampUfied from a normal human tissue. 22. A method of diagnosing neoplasia comprising: contacting a bDNA probe with nucleic acids isolated from a tissue suspected of neoplasia, wherein the bDNA probe specificaUy hybridizes with an mammaUan San gene sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 3, and SEQ ID NO: 5; detecting hybrids formed between the bDNA probe and nucleic acids isolated from the tissue; and identifying a mutation in the nucleic acids isolated from the tissue by comparing the hybrids formed with hybrids similarly formed using nucleic acids from a normal human tissue. 23. A method of diagnosing neoplasia comprising: contacting a tissue sample suspected of being neoplastic with an antibody selected from the group consisting of: one which specificaUy binds to wild-type mammaUan Sem as shown in SEQ ID NO:2, 4, or 6, or one which specificaUy binds to an expressed mammaUan Sem variant; detecting binding of the antibody to components of the tissue sample, wherein a difference in the binding of the antibody to components of the tissue sample, as compared to binding of the antibody to a normal human tissue sample indicates neoplasia of the tissue. 24. A method of diagnosing neoplasia comprising: contacting RNA from a tissue suspected of being neoplastic with PCR primers which specificaUy hybridize to an mammaUan Sem gene sequence as shown in SEQ ID NO: 1, 3, or 5, or a bDNA probe which specificaUy hybridizes to said sequence; determining quantitative levels of mammaUan San RNA in the tissue by PCR ampUfication or bDNA probe detection, wherein lower levels of mammaUan Son RNA as compared to a normal human tissue indicate neoplasia. 25. An isolated nucleic acid molecule which comprises a sequence of at least 20 contiguous nucleotides of a 5' untranslated region of an mammaUan San gene, for use in regulating a heterologous coding sequence coordinately with mammaUan San. 26. An isolated nucleic acid molecule which comprises a sequence of at least 20 contiguous nucleotides of a 3' untranslated region of an mammaUan San gene, for use in regulating a heterologous coding sequence coordinately with mammaUan San. 27. An isolated nucleic acid molecule which comprises at least 20 contiguous nucleotides of a promoter region of an mammaUan San gene, for use in regulating a heterologous coding sequence coordinately with mammaUan San. 28. An isolated nucleic acid molecule which comprises at least 20 contiguous nucleotides of an intron of an mammaUan San gene, for use in regulating a heterologous coding sequence coordinately with mammaUan San. 29. A method of identifying modulators of mammaUan Sem function comprising: contacting a test substance with a mammaUan cell which comprises an mammaUan Sem gene or a reporter construct comprising an mammaUan San promoter and a reporter gene; quantitating transcription of mammaUan San or the reporter gene transcription in the presence and absence of the test substance, wherein a test substance which increases transcription is a candidate drug for anti-neoplastic therapy. 30. The method of claim 29 wherein transcription is quantitated indirectly by measuring the gene product or a reaction product thereof. 31. A vector comprising the nucleic acid molecule of claim 7. 32. A vector comprising the nucleic acid molecule of claim 8. 33. A vector comprising the nucleic acid molecule of claim 9. 34. A vector comprising the nucleic acid molecule of claim 10. 35. A vector comprising the nucleic acid molecule of claim 11.

Inventors: RANDAZZO FILIPPO, RANDAZZO, FILIPPO
Applicants: CHIRON CORP, CHIRON CORPORATION
Application year: 1997
Main classification: C07H21
IPC codes: A61K31, A61K38, A61K48, A61P35, A61P43, C07K14, C07K16, C12N5, C12N15, C12P21, C12Q1