RECEPTOR OF THE THYROID/STEROID HORMONE RECEPTOR SUPERFAMILY

Abstract: Novel members of the steroid/thyroid superfamily of receptors are described. DNA sequences encoding same, expression vectors containing such DNA and host cells transformed with such expression vectors are also disclosed, as are methods for the expression of the novel receptors of the invention, and various uses thereof.

Description: RECEPTOR OF THE THYROID/STEROID HORMONE RECEPTOR SUPERFAMILY FIELD OF THE INVENTION The present invention relates to novel steroid- hormone or steroid-hormone like receptor proteins, genes encoding such proteins, and methods of making and using such proteins. In a particular aspect, the present invention relates to bioassay systems for determining the selectivity of interaction between ligands and steroid- hormone or steroid-hormone like receptor proteins. BACKGROUND OF THE INVENTION Transcriptional regulation of development and homeostasis in complex eukaryotes, including humans and other mammals, birds, fish, insects, and the like, iε controlled by a wide variety of regulatory substances, including steroid and thyroid hormones. These hormones exert potent effects on development and differentiation of phylogenetically diverse organisms. The effects, of hormones are mediated by interaction with specific, high affinity binding proteins referred to as receptors. The ability to identify additional compounds which are able to affect transcription of genes which are responsive to steroid hormones or metabolites thereof, would be of significant value in identifying compounds of potential therapeutic use. Further, systems useful for monitoring solutions, body fluids, and the like, for the presence of steroid hormones or metabolites thereof, would be of value in medical diagnosis, as well as for various biochemical applications. A number of receptor proteins, each specific for one of several classes of cognate steroid hormones [e.g., estrogens (estrogen receptor) , progesterones (progesterone receptor) , glucocorticoid (glucocorticoid receptor) , androgens (androgen receptor) , aldosterones (mineralocorticoid receptor) , vitamin D (vitamin D receptor)], retinoids (e.g., retinoic acid receptor) or for cognate thyroid hormones (e.g. , thyroid hormone receptor) , are known. Receptor proteins have been found to be distributed throughout the cell population of complex eukaryotes in a tissue specific fashion. Molecular cloning studies have made it possible to demonstrate that receptors for steroid, retinoid and thyroid hormones are all structurally related and comprise a superfamily of regulatory proteins. These regulatory proteins are capable of modulating specific gene expression in response to hormone stimulation by binding directly to cis-acting elements. Structural comparisons and functional studies with mutant receptors have revealed that these molecules are composed of a series of discrete functional domains, most notably, a DNA-binding domain that is composed typically of 66-68 amino acids, including two zinc fingers and an associated carboxy terminal stretch of approximately 250 amino acids, which latter region comprises the ligand-binding domain. An important advance in the characterization of this superfamily of regulatory proteins has been the delineation of a growing list of gene products which possess the structural features of hormone receptors. This growing list of gene products has been isolated by low- stringency hybridization techniques employing DNA sequences encoding previously identified hormone receptor proteins. It is known that steroid or thyroid hormones, protected forms thereof, or metabolites thereof, enter cells and bind to the corresponding specific receptor protein, initiating an allosteric alteration of the protein. As a result of this alteration, the complex of receptor and hormone (or metabolite thereof) is capable of binding to certain specific sites on chromatin with high affinity. It is also known that many of the primary effects of steroid and thyroid hormones involve increased transcription of a subset of genes in specific cell types. A number of steroid hormone- and thyroid hormone- responsive transcriptional control units have been identified. These include the mouse mammary tumor virus 5'-long terminal repeat (MTV LTR) , responsive to glucocorticoid, aldosterone and androgen hormones; the transcriptional control units for mammalian growth hormone genes, responsive to glucocorticoids, estrogens and thyroid hormones; the transcriptional control units for mammalian prolactin genes and progesterone receptor genes, responsive to estrogens; the transcriptional control units for avian ovalbumin genes, responsive to progesterones; mammalian metallothionein gene transcriptional control units, responsive to glucocorticoids; and mammalian hepatic α 2u - globulin gene transcriptional control units, responsive to androgens, estrogens, thyroid hormones, and glucocorticoids. A major obstacle to further understanding and more widespread use of the various members of the steroid/thyroid superfamily of hormone receptors has been a lack of availability of the receptor proteins, in sufficient quantity and sufficiently pure form, to allow them to be adequately characterized. The same is true for the DNA gene segments which encode them. Lack of availability of these DNA segments has prevented in vitro manipulation and in vivo expression of the receptor- encoding genes, and consequently the knowledge such manipulation and expression would yield. In addition, a further obstacle to a more complete understanding and more widespread use of members of the steroid/thyro d receptor superfamily is the fact that additional members of this superfamily remain to be discovered, isolated and characterized. The present invention is directed to overcoming these problems of short supply of adequately purified receptor material, lack of DNA segments which encode such receptors and increasing the number of identified and characterized hormone receptors which are available for use. BRIEF DESCRIPTION OF THE INVENTION In accordance with the present invention, we have discovered novel members of the steroid/thyroid superfamily of receptors. The novel receptors of the present invention are soluble, intracellular, nuclear (as opposed to cell surface) receptors, which are activated to modulate transcription of certain genes in animal cells when the cells are exposed to ligands therefor. The nuclear receptors of the present invention differ significantly from known steroid receptors, both in primary sequence and in responsiveness to exposure of cells to various ligands, e.g., steroids or steroid-like compounds. Also provided in accordance with the present invention are DNAs encoding the receptors of the present invention, including expression vectors for expression thereof in animal cells, cells transformed with such expression vectors, cells co-transformed with such expression vectors and reporter vectors (to monitor the ability of the receptors to modulate transcription when the cells are exposed to a compound which interacts with the receptor) ; and methods of using such co-transformed cells in screening for compounds which are capable of leading to modulation of receptor activity. Further provided in accordance with the present invention are DNA and RNA probes for identifying DNAs encoding additional steroid receptors. In accordance with yet another embodiment of the invention, there is provided a method for making the receptors of the invention by expressing DNAs which encode the receptors in suitable host organisms. The novel receptors and DNAs encoding same can be employed for a variety of purposes. For example, novel receptors of the present invention can be included as part of a panel of receptors which are screened to determine the selectivity of interaction of proposed agonists or antagonists and other receptors. Thus, a compound which is believed to interact selectively, for example, with the glucocorticoid receptor, should not have any substantial effect on any other receptors, including those of the present invention. Conversely, if such a proposed compound does interact with one or more of the invention receptors, then the possibility of side reactions caused by such compound is clearly indicated. BRIEF DESCRIPTION OF THE FIGURE Figure 1 is a schematic diagram correlating the relationship between the alternate spliced variants of invention receptor XR1. DETAILED DESCRIPTION OF THE INVENTION In accordance with the present invention, there are provided DNAs encoding a polypeptide characterized by having a DNA binding domain comprising about 66 amino acids with 9 cysteine (Cys) residues, wherein said DNA binding domain has: (i) less than about 70% amino acid sequence identity with the DNA binding domain of human retinoic acid receptor-alpha (hRAR- alpha) ; (ii) less than about 60% amino acid sequence identity with the DNA binding domain of human thyroid receptor-beta (hTR-beta) ; (iϋ) less than about 50% amino acid sequence identity with the DNA binding domain of human glucocorticoid receptor (hGR) ; and (iv) less than about 65% amino acid sequence identity in with the DNA binding domain of human retinoid X receptor-alpha (hRXR- alpha) . Alternatively, DNAs of the invention can be characterized with respect to percent amino acid sequence identity of the ligand binding domain of polypeptides -encoded thereby, relative to amino acid sequences of previously characterized receptors. As yet another alternative, DNAs of the invention can be characterized by the percent overall amino' acid sequence identity of polypeptides encoded thereby, relative to amino acid sequences of previously characterized receptors. Thus, DNAs of the invention can be characterized as encoding polypeptides having, in the ligand binding domain: (i) less than about 35% amino acid sequence identity with the ligand binding domain of hRAR-alpha; (ii) less than about 30% amino acid sequence identity with the ligand binding domain of hTR-beta; (iii) less than about 25% amino acid sequence identity with the ligand binding domain of hGR; and (iv) less than about 30% amino acid sequence identity with the ligand binding domain of hRXR-alpha. DNAs of the invention can be further characterized as encoding polypeptides having an overall amino acid sequence identity of: (i) less than about 35% relative to hRAR- alpha; (ii) less than about 35% relative to hTR- beta; (iii) less than about 25% relative to hGR; and (iv) less than about 35% relative to hRXR- alpha. Specific receptors contemplated for use in the practice of the present invention include: "XR1" (variously referred to herein as receptor "XR1", "hXRl", "hXRl.pep" or "verHT19.pep"; wherein the prefix "h" indicates the clone is of human origin) , a polypeptide characterized as having a DNA binding domain comprising: (i) about 68% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) about 59% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) about 45% amino acid sequence identity 5 with the DNA binding domain of hGR; and (iv) about 65% amino acid sequence identity with the DNA binding domain of hRXR-alpha; see also Sequence ID No. 2 for a specific amino 10 acid sequence representative of XR1, as well as Sequence ID No. 1 which is an exemplary nucleotide sequence encoding XR1. In addition. Sequence ID Nos. 4 and 6 present alternate amino terminal sequences for the clone referred to as 15 XR1 (the variant referred to as verht3 is presented in Sequence ID No. 4 (an exemplary nucleotide sequence encoding such variant presented in Sequence ID No. 3) , and the variant referred to as verhrδ is presented in Sequence ID 20 No. 6 (an exemplary nucleotide sequence encoding such variant presented in Sequence ID No. 5) ; "XR2" (variously referred to herein as receptor "XR2", "hXR2" or "hXR2.pep") , a polypeptide 25 characterized as having a DNA binding domain comprising: (i) about 55% amino acid sequence identity with the DNA binding domain of hRAR-alpha; 30 (ii) about 56% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) about 50% amino acid sequence identity with the DNA binding domain of hGR; and (iv) about 52% amino acid sequence identity with the DNA binding domain of hRXR-alpha; see also Sequence ID No. 8 for a specific amino 5 acid sequence representative of XR2, as well as Sequence ID No. 7 which is an exemplary nucleotide sequence encoding XR2; "XR4" (variously referred to herein as receptor 10 "XR4", "mXR4" or "mXR4.pep"; wherein the prefix "m" indicates the clone is of mouse origin) , a polypeptide characterized as having a DNA binding domain comprising: (i) about 62% amino acid sequence identity 15 with the DNA binding domain of hRAR-alpha; (ii) about 58% amino acid sequence identity with the DNA binding domain of hTR-beta; 20 (ϋi) about 48% amino acid sequence identity with the DNA binding domain of hGR; and (iv) about 62% amino acid sequence identity with the DNA binding domain of hRXR-alpha; 25 see also Sequence ID No. 10 for a specific amino acid sequence representative of XR4, as well as Sequence ID No. 9 which is an exemplary nucleotide sequence encoding XR4; 30 "XR5" (variously referred to herein as receptor "XR5", "mXR5" or "mXR5.pep") , a polypeptide characterized as having a DNA binding domain comprising: (i) about 59% amino acid sequence identity 35 with the DNA binding domain of hRAR-alpha; (ii) about 52% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) about 44% amino acid sequence identity with the DNA binding domain of hGR; and (iv) about 61% amino acid sequence identity with the DNA binding domain of hRXR-alpha; see also Sequence ID No. 12 for a specific amino acid sequence representative of XR5, as well as Sequence ID No. 11 which is an exemplary nucleotide sequence encoding XR5; and "XR79" (variously referred to herein as "XR79", "dXR79" or "dXR79.pep"; wherein the prefix "d" indicates the clone is of Drosophila origin) , a polypeptide characterized as having a DNA binding domain comprising: (i) about 59% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) about 55% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) about 50% amino acid sequence identity with the DNA binding domain of hGR; and (iv) about 65% amino acid sequence identity with the DNA binding domain of hRXR-alpha; see also Sequence ID No. 14 for a specific amino acid sequence representative of XR79, as well as Sequence ID No. 13 which is an exemplary nucleotide sequence encoding XR79. The receptor referred to herein as "XRl" is observed as three closely related proteins, presumably produced by alternate splicing from a single gene. The first of these proteins to be characterized (referred to as "verhtlθ") comprises about 548 amino acids, and has a M r of about 63 kilodalton. Northern analysis indicates that a single mRNA species corresponding to XRl is highly expressed in the brain. A variant of verhtl9 (alternatively referred to as "verht3", XRl' or XRlprime) is further characterized as comprising about 556 amino acids, and having a M r of about 64 kilodalton. Yet another variant of verhtl9 (alternatively referred to as "verhrδ", XRl* • or XRlprim.2) is further characterized as comprising about 523 amino acids, and having a M r of about 60 kilodalton. The interrelationship between these three variants of XRl is illustrated schematically in Figure 1. The receptor referred to herein as "XR2" is further characterized as a protein comprising about 440 amino acids, and having a M r of about 50 kilodalton. Northern analysis indicates that a single mRNA species (-1.7 kb) corresponding to XR2 is expressed most highly in liver, kidney, lung, intestine and adrenals of adult male rats. Transactivation studies (employing chimeric receptors containing the XR2 DNA binding domain and the ligand binding domain of a prior art receptor) indicate that XR2 is capable of binding to TRE t . In terms of amino acid sequence identity with prior art receptors, XR2 is most closely related to the vitamin D receptor (39% overall • amino acid sequence identity, 17% amino acid identity in the amino terminal domain of the receptor, 53% amino acid identity in the DNA binding domain of the receptor and 37% amino acid identity in the ligand binding domain of the receptor) . The receptor referred to herein as "XR4 11 is further characterized as a protein comprising about 439 amino acids, and having a M r of about 50 kilodalton. In terms of amino acid sequence identity with prior art receptors, XR4 is most closely related to the peroxisome proliferator-activated receptor (62% overall amino acid sequence identity, 30% amino acid identity in the amino terminal domain of the receptor, 86% amino acid identity in the DNA binding domain of the receptor and 64% amino acid identity in the ligand binding domain of the receptor) . XR4 is expressed ubiquitously and throughout development (as determined by in situ hybridization) . The receptor referred to herein as "XR5" is further characterized as a protein comprising about 556 amino acids, and having a M r of about 64 kilodalton. In situ hybridization reveals widespread expression throughout development. High levels of expression are observed in the embryonic liver around day 12, indicating a potential role in haematopoiesis. High levels are also found in maturing dorsal root ganglia and in the skin. In terms of amino acid sequence identity with prior art receptors, XR5. is most closely related to the rat nerve growth factor induced protein-B (NGFI-B) receptor. With respect to NGFI-B, XR5 has 29% overall amino acid sequence identity, 15% amino acid identity in the amino terminal domain of the receptor, 52% amino acid identity in the DNA binding domain of the receptor and 29% amino acid identity in the ligand binding domain of the receptor. The receptor referred to herein as ,I XR79" is further characterized as a protein comprising about 601 amino acids, and having a M r of about 66 kilodalton. Whole mount in situ hybridization reveals a fairly uniform pattern of RNA expression during embryogenesis. Northern blot analysis indicates that a 2.5 kb transcript corresponding to XR79 is present in RNA throughout development. The levels of XR79 mRNA are highest in RNA from 0 - 3 hour old embryos, i.e., maternal product, and lowest in RNA from the second instar larvae (L2 stage) . In situ hybridization reveals that XR79 is distributed relatively uniformly at different stages of embryogenesis. In terms of amino acid sequence identity with prior art receptors, XR79 is most closely related to the mammalian receptor TR2 [see Chang and Kokontis in Biochemical and Biophysical Research Communications 155: 971-977 (1988)], as well as members of the coup family, i.e., ear2, coup(ear3), harp-1. With respect to TR2, XR79 has 33% overall amino acid sequence identity, 16% amino acid identity in the amino terminal domain of the receptor, 74% amino acid identity in the DNA binding domain of the receptor and 28% amino acid identity in the ligand binding domain of the receptor. With respect to coup (ear3) [see Miyajima et al., in Nucl Acids Res 16: 11057-11074 (1988)], XR79 has 32% overall amino acid sequence identity, 21% amino acid identity in the amino terminal domain of the receptor, 62% amino acid identity in the DNA binding domain of the receptor and 22% amino acid identity in the ligand binding domain of the receptor. In accordance with a specific embodiment of the present invention, there is provided an expression vector which comprises DNA as previously described (or functional fragments thereof) , and which further comprises: at the 5*-end of said DNA, a promoter and a nucleotide triplet encoding a translational start codon, and at the 3'-end of said DNA, a nucleotide triplet encoding a translational stop codon; wherein said expression vector is operative in a cell in culture (e.g., yeast, bacteria, mammalian) to express the protein encoded by said DNA. As employed herein, reference to "functional fragments" embraces DNA encoding portions of the invention receptors which retain one or more of the functional characteristics of steroid hormone or steroid hormone-like receptors, e.g., DNA binding properties of such receptors, ligand binding properties of such receptors, the ability to heterodimerize, nuclear localization properties of such receptors, phosphorylation properties of such receptors, transactivation domains characteristic of such receptors, and the like. In accordance with a further embodiment of the present invention, there are provided cells in culture (e.g., yeast, bacteria, mammalian) which are transformed with the above-described expression vector. In accordance with yet another embodiment of the present invention, there is provided a method of making the above-described novel receptors (or functional fragments thereof) by culturing the above-described cells under conditions suitable for expression of polypeptide product. In accordance with a further embodiment of the present invention, there are provided novel polypeptide products produced by the above-described method. In accordance with a still further embodiment of the present invention, there are provided chimeric receptors comprising at least an amino-terminal domain, a DNA-binding domain, and a ligand-binding domain, wherein at least one of the domains thereof is derived from the novel polypeptides of the present invention; and wherein at least one of the domains thereof is derived from at least one previously identified member of the steroid/thyroid superfamily of receptors e.g., glucocorticoid receptor (GR) , thyroid receptors (TR) , retinoic acid receptors (RAR) , mineralocorticoid receptor (MR) , estrogen receptor (ER) , the estrogen related receptors (e.g., hERRl or hERR2) , retinoid X receptors (e.g., RXRα, RXRβ or RXR5) , 5. vitamin D receptor (VDR) , aldosterone receptor (AR) , progesterone receptor (PR) , the ultraspiracle receptor (USP) , nerve growth factor induced protein-B (NGFI-B) , the coup family of transcription factors (COUP) , peroxisome 0 proliferator-activated receptor (PPAR) , mammalian receptor TR2 (TR2) , and the like. In accordance with yet another embodiment of the present invention, there is provided a method of using 5 polypeptides of the invention to screen for response elements and/or ligands for the novel receptors described herein. The method to identify compounds which act as ligands for receptor polypeptides of the invention comprising: 0 assaying for the presence or absence of reporter protein upon contacting of cells containing a chimeric form of said receptor polypeptide and reporter vector with said compound; wherein said chimeric form of said receptor 5 polypeptide comprises the ligand binding domain of said receptor polypeptide and the amino-ter inal and DNA-binding domains of one or more previously identified members of the steroid/thyroid superfamily of receptors; wherein said reporter vector comprises: 0 (a) a promoter that is operable in said cell, (b) a hormone response element which is responsive to the receptor from which the DNA-binding domain of said chimeric form of said receptor polypeptide is derived, and (c) a DNA segment encoding a reporter protein, wherein said reporter protein- encoding DNA segment is operatively linked to said promoter for transcription of said DNA segment, and wherein said hormone response element is operatively linked to said promoter for activation thereof, and thereafter identifying those compounds which induce or block the production of reporter in the presence of said chimeric form of said receptor polypeptide. The method to identify response elements for receptor polypeptides of the invention comprises: assaying for the presence or absence of reporter protein upon contacting of cells containing a chimeric form of said receptor polypeptide and reporter vector with a compound which is a known agonist or antagonist for the receptor from which the ligand-binding domain of said chimeric form of said receptor polypeptide is derived; wherein said chimeric form of said receptor polypeptide comprises the DNA-binding domain of the receptor polypeptide and the amino-terminal and ligand-binding domains of one or more previously identified members of the steroid/thyroid superfamily of receptors; wherein said reporter vector comprises: (a) a promoter that is operable in said cell, (b) a putative hormone response element, and (c) a DNA segment encoding a reporter protein, wherein said reporter protein- encoding DNA segment is operatively linked to said promoter for transcription of said DNA segment, and wherein said hormone response element is operatively linked to said promoter for activation thereof; and identifying those response elements for which the production of reporter is induced or blocked in the presence of said chimeric form of said receptor polypeptide. In accordance with yet another embodiment of the present invention, there is provided a DNA or RNA labeled for detection; wherein said DNA or RNA comprises a nucleic acid segment, preferably of at least 20 bases in length, wherein said segment has substantially the same sequence as a segment of the same length selected from the DNA segment represented by bases 21 -1902, inclusive, of Sequence ID No. 1, bases 1 - 386, inclusive, of Sequence ID No. 3, bases 10 - 300, inclusive, of Sequence ID No. 5, bases 21 - 1615, inclusive, of Sequence ID No. 7, bases 21 - 2000, inclusive, of Sequence ID No. 9, bases 1 - 2450, inclusive, of Sequence ID No. 11, bases 21 - 2295, inclusive, of Sequence ID No. 13, or the complement of any of said segments. In accordance with still another embodiment of the present invention, there are provided methods of testing compound(s) for the ability to regulate transcription-activating effects of a receptor polypeptide, said method comprising assaying for the presence or absence of reporter protein upon contacting of cells containing a receptor polypeptide and reporter vector with said compound; wherein said receptor polypeptide is characterized by having a DNA binding domain comprising about 66 amino acids with 9 Cys residues, wherein said DNA binding domain has: (i) less than about 70% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) less than about 60% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) less than about 50% amino acid sequence identity with the DNA binding domain of hGR; and (iv) less than about 65% amino acid sequence identity with the DNA binding domain of hRXR-alpha; and wherein said reporter vector comprises: (a) a promoter that is operable in said cell, (b) a hormone response element, and (c) a DNA segment encoding a reporter protein, wherein said reporter protein-encoding DNA segment is operatively linked to said promoter for transcription of said DNA segment, and wherein said hormone response element is operatively linked to said promoter for activation thereof. In accordance with a still further embodiment of the present invention, there is provided a method of testing a compound for its ability to selectively regulate the transcription-activating effects of a specific receptor polypeptide, said method comprising: assaying for the presence or absence of reporter protein upon contacting of cells containing said receptor polypeptide and reporter vector with said compound; wherein said receptor polypeptide is characterized by being responsive to the presence of a known ligand for said receptor to regulate the transcription of associated gene(s) ; wherein said reporter vector comprises: (a) a promoter that is operable in said cell, (b) a hormone response element, and (c) a DNA segment encoding a reporter protein, wherein said reporter protein- encoding DNA segment is operatively linked to said promoter for transcription of said DNA segment, and wherein said hormone response element is operatively linked to said promoter for activation thereof; and assaying for the presence or absence of reporter protein upon contacting of cells containing chimeric receptor polypeptide and reporter vector with said compound; wherein said chimeric receptor polypeptide comprises the ligand binding domain of a novel receptor of the present invention, and the DNA binding domain of said specific receptor; and thereafter selecting those compounds which induce or block the production of reporter in the presence of said specific receptor, but are substantially unable to induce or block •the production of reporter in the presence of said chimeric receptor. The above-described methods of testing compounds for the ability to regulate transcription-activating effects of invention receptor polypeptides can be carried out employing methods described in USSN 108,471, filed October 20, 1987, the entire contents of which are hereby incorporated by reference herein. As employed herein, the term "expression vector" refers to constructs containing DNA of the invention (or functional fragments thereof), plus all sequences necessary for manipulation and expression of such DNA. Such an 5. expression vector will contain both a "translational start site" and a "translational stop site". Those of skill in the art can readily identify sequences which act as either translational start sites or translational stop sites. 0 Suitable host cells for use in the practice of the present invention include prokaroytic and eukaryote cells, e.g., bacteria, yeast, mammalian cells and the like. Labeled DNA or RNA contemplated for use in the practice of the present invention comprises nucleic acid sequences covalently attached to readily analyzable species such as, for example, radiolabel (e.g., P, H, S, and the like) , enzymatically active label, and the like. The invention will now be described in greater detail by reference to the following non-limiting examples. EXAMPLES EXAMPLE I ISOLATION AND CHARACTERIZATION OF XRl The KpnI/SacI restriction fragment (503bp) including the DNA-binding domain of hRAR-alpha-encoding DNA [See Giguere et al. , Nature 330: 624-629 (1987); and commonly assigned United States Patent Application Serial No. 276,536, filed November 30, 1988; and European Patent Application Publication No. 0 325 849, all incorporated herein by reference] was nick-translated and used to screen a rat brain cDNA library [see DNA Cloning, A practical approach, Vol I and II, D. M. Glover, ed. (IRL Press (1985)] and a lambda-gtll human liver cDNA library [Kwok et al., Bioche . 2Λ : 556 (1985)] at low stringency. The hybridization mixture contained 35% formamide, IX Denhardt's, 5X SSPE (IX SSPE=0.15 M NaCl, lOmM Na-HP0 4 lmM EDTA), 0.1% SDS, 10% dextran sulfate, 100 μg/ml denatured salmon sperm DNA and 10 6 cpm of [ 32 P]-labelled probe. Duplicate nitrocellulose filters were hybridized for 16h at 42°C, washed once at 25°C for 15 min with 2X SSC (IX SSC=0.15 M NaCl, 0.015 M sodium citrate) , 0.1% SDS and then washed twice at 55°C for 30 min. in 2X SSC, 0.1% SDS. The filters were autoradiographed for 3 days at -70°C using an intensifying screen. After several rounds of screening, a . pure positive clone having an insert of about 2.1 kb is obtained from the rat brain cDNA library. Several positive clones are obtained from the human liver library. Sequence analysis of the positive rat brain clone indicates that this clone encodes a novel member of the steroid/thyroid superfamily of receptors. Sequence analysis of one of the positive human liver clones (designated "hLl", a 1.7 kb cDNA) indicates that this clone is the human equivalent of the rat brain clone, based on sequence homology. The EcoRI insert of clone hLl (labeled with 32 P) is also used as a probe to screen a human testis cDNA library (Clonetech) and a human retina cDNA library [see Nathans et al., in Science 232: 193-202 (1986)]. Hybridization conditions comprised a hybridization mixture containing 50% formamide, IX Denhardt's, 5X SSPE, 0.1% SDS, 6 _5? 100 μg/ml denatured salmon sperm DNA and 10 cpm of [ P]- labelled probe. Duplicate nitrocellulose filters were hybridized for 16h at 42°C, washed once at 25°C for 15 min with 2X SSC (IX SSC=0.15 M NaCl, 0.015 M sodium citrate), 0.1% SDS and then washed twice at 55°C for 30 min. in 2X SSC, 0.1% SDS. The filters were autoradiographed for 3 days at -70°C using an intensifying screen. After several rounds of screening, five (5) positive clones were obtained from the human retina cDNA library, and five (5) positive clones were obtained from the human testis cDNA library. Sequence analysis of two clones from the testis library indicates that these clones encode different isoforms of the same novel member of the steroid/thyroid superfamily of receptors (designated as "Verhtl9" and "Verht3") . Sequence analysis of one of the positive clones from the human retina library indicates that this clone is yet another isoform of the same novel member of the steroid/thyroid superfamily of receptors (designated "Verhr5") . The full length sequence of Verhtl9 is set forth herein as Sequence ID No. 1 (which includes an indication of where the splice site is for each of the variants, verht3 and verhrδ) . The amino-terminal sequence of verht3 and verhr5 are presented in Sequence ID Nos.. 3 and 5, respectively. In addition, the interrelationship between each of these three isoforms is illustrated schematically in Figure 1. EXAMPLE II ISOLATION AND CHARACTERIZATION OF XR2 The KpnI/SacI restriction fragment (503bp) including the DNA-binding domain of hRAR-alpha-encoding DNA [See Giguere et al.. Nature 330: 624 (1987); and commonly assigned United States Patent Application Serial No. 276,536, filed November 30, 1988; and European Patent Application Publication No. 0 325 849, all incorporated herein by reference] was nick-translated and used to screen a lambda-gtll human liver cDNA library [Kwok et al. ,Biochem. 24: 556 (1985)] at low stringency. The hybridization mixture contained 35% formamide, IX Denhardt's, 5X SSPE (IX SSPE=0.15 M NaCl, lOmM Na-HP0 4 ImM EDTA), 0.1% SDS, 10% dextran sulfate, 100 mg/ml denatured salmon sperm DNA and 10 6 cpm of [ 32 P]-labelled probe. Duplicate nitrocellulose filters were hybridized for 16h at 42°C, washed once at 25°C for 15 min with 2X SSC (IX SSC=0.15 M NaCl, 0.015 M sodium citrate), 0.1% SDS and then washed twice at 55°C for 30 min. in 2X SSC, 0.1% SDS. The filters were autoradiographed for 3 days at -70°C using an intensifying screen. Positive clones were isolated, subcloned into pGEM vectors (Promega, Madison, Wisconsin, USA) , restriction mapped, and re-subcloned in various sized restriction fragments into M13mpl8 and M13mpl9 sequencing vectors. DNA sequence was determined by the dideoxy method with Sequenase™ sequencing kit (United States Biochemical, Cleveland, Ohio, USA) and analyzed by University of Wisconsin Genetics Computer Group programs [Devereux et al. , Nucl. Acids Res. 12. 387 (1984)]. Several clones of a unique receptor-like sequence were identified, the longest of which was designated lambda-HLl-1 (also referred to herein as XR2) . The DNA sequence of the resulting clone is set forth as Sequence ID No. 7. EXAMPLE III ISOLATION AND CHARACTERIZATION OF XR4 A clone which encodes a portion of the coding sequence for XR4 was isolated from a mouse embryonic library by screening under low stringency conditions (as described above) . The library used was a lambda gtlO day 8.5 cDNA library having an approximate titer of 1.3 x 10 10/ml (derived from 8.5 day old embryonic material with as much of the amnion and extraembryonic tissues dissected away as possible) . This library was prepared from poly A selected RNA (by oligo-dT priming) , Gubler & Hoffman cloning methods [Gene 25: 263 (1983)], and cloned into the EcoRI site of lambda gtlO. The probe used was a mixture of radioactively labeled DNA derived from the DNA binding regions of the human alpha and beta retinoic acid receptors. Positive clones were isolated, subcloned into pGEM vectors (Promega, Madison, Wisconsin, USA) , restriction mapped, and re-subcloned in various sized restriction fragments into M13mpl8 and M13mpl9 sequencing vectors. DNA sequence was determined by the dideoxy method with Sequenase™ sequencing kit (United States Biochemical, Cleveland, Ohio, USA) and analyzed by University of Wisconsin Genetics Computer Group programs [Devereux et al. , Nucl. Acids Res. 12, 387 (1984) ] . Several clones of a unique receptor-like sequence were identified, the longest of which was designated XR4. The DNA sequence of the resulting clone is set forth as Sequence ID No. 9. EXAMPLE IV ISOLATION AND CHARACTERIZATION OF XR5 A clone which encodes a portion of the coding sequence for XR5 was isolated from a mouse embryonic library by screening under low stringency conditions (as described above) . The library used was the same lambda gtlO day 8.5 cDNA library described in the preceding example. Similarly, the probe used was the same mixture of radioactively labeled DNA described in the preceding example. 5. Only one of the clones isolated corresponds to a portion of the coding region for XR5. A 0.7 kb EcoRI fragment of this clone (designated as No. 11-17) was subcloned into the bluescript pksII-Vector. Partial sequence analysis of this insert fragment shows homology to 0 the DNA binding domain of the retinoic acid receptors. The EcoRI-insert was used to rescreen a second library (a mouse lambda ZAPII day 6.5 cDNA library, prepared as described below) under high stringency 5 conditions. A total of 21 phages were isolated and rescued into the psk-vector. Partial sequencing allowed inserts from 13 of these phages to be identified as having sequences which overlap with XR511-17. The clone with the longest single EcoRI-insert was sequenced, revealing an 0 open reading frame of 556 amino acids. This sequence was extended further upstream by 9bp from the furthest 5'-reaching clone. The DNA sequence of the resulting clone is set forth as Sequence ID No. 11. The day 6.5 cDNA library, derived from 6.5 day old mouse embryonic material was prepared from poly A + selected RNA (by oligo-dT priming) , and cloned into the EcoRI site of lambda gtlO. EXAMPLE V ISOLATION AND CHARACTERIZATION OF XR79 The 550 bp BamHI restriction fragment, including the DNA-binding domain of mouse RAR-beta-encoding DNA (See Hamada et al. , Proc. Natl. Acad. Sci. 86.. 8289 (1989); incorporated by reference herein) was nick-translated and used to screen a Lambda-ZAP cDNA library comprising a size selected Drosophila genomic library (-2-5 kb, EcoRI restricted) at low stringency. The hybridization mixture contained 35% formamide, IX Denhardt's, 5X SSPE (IX SSPE=0.15 M NaCl, lOmM Na-HP0 4 ImM EDTA), 0.1% SDS, 10% dextran sulfate, 100 mg/ml denatured salmon sperm DNA and 10 6 cpm of [ 32 P]-labelled probe. Duplicate nitrocellulose filters were hybridized for 16h at 42°C, washed once at 25°C for 15 min with 2X SSC (IX SSC=0.15 M NaCl, 0.015 M sodium citrate) , 0.1% SDS and then washed twice at 55°C for 30 min. in 2X SSC, 0.1% SDS. The filters were autoradiographed for 3 days at -70°C using an intensifying screen. After several rounds of screening, a pure positive clone having an insert of about 3.5 kb is obtained from the Drosophila genomic library. This genomic clone was then used to screen a Drosophila imaginal disc lambda gtlO cDNA library [obtained from Dr. Charles Zuker; see DNA Cloning, A practical approach, Vol I and II, D. M. Glover, ed. (IRL Press (1985) ] . Hybridization conditions comprised a hybridization mixture containing 50% formamide, IX Denhardt's, 5X SSPE, 0.1% SDS, 100 μg/ml denatured salmon sperm DNA and 10 cpm of [ P]-labelled probe. Duplicate nitrocellulose filters were hybridized for 16h at 42°C, ' washed once at 25°C for 15 min with 2X SSC (IX SSC=0.15 M NaCl, 0.015 M sodium citrate), 0.1% SDS and then washed twice at 55°C for 30 min. in 2X SSC, 0.1% SDS. The filters were autoradiographed for 3 days at -70°C using an intensifying screen. Sequence analysis of the positive cDNA clone indicates that this clone encodes another novel member of the steroid/thyroid superfamily of receptors (designated "XR79", a 2.5 kb cDNA) . See Sequence ID No. 13 for the DNA sequence of the resulting clone. The 2.5 kb cDNA encoding XR79 was nick-translated and used as a probe for a nitrocellulose filter containing size-fractionated total RNA, isolated by standard methods from Drosophila melanogaster of different developmental stages. The probe hybridized to a 2.5 kb transcript which was present in RNA throughout development. The levels were highest in RNA from 0 - 3 hour old embryos and lowest in RNA from second instar larvae. The same 2.5 kb cDNA was nick translated using biotinylated nucleotides and used aε a probe for in situ sybridization to whole Drosophila embryos [Tautz and Pfeifle, Chromosoma £8 . : 81-85 (1989)]. The RNA distribution appeared relatively uniform at different stages of embryogenesis. EXAMPLE VI SEQUENCE COMPARISONS OF INVENTION RECEPTORS WITH hRARα, hTRβ, hGR, AND hRXRα Amino acid sequences of XRl, hRAR-alpha (human retinoic acid receptor-alpha) , hTR-beta (human thyroid hormone receptor-beta) , hGR (human glucocorticoid receptor) , and hRXR-alpha (human retinoid receptor-alpha) were aligned using the University of Wisconsin Genetics Computer Group program "Bestfit" (Devereux et al., supra). The percentage of amino acid identity between RX2 and the other receptors, i.e., in the 66 - 68 amino acid DNA binding domains and the ligand-binding domains, are summarized in Table 1 as percent amino acid identity. TABLE 1 Percent amino acid identity between receptor XRl (verhtl9) and hRARα, TRβ, hGR, and hRXRα Percent amino acid identity Comparison receptor Overall N-term DNA-BD Liσand-BD hGR 18 21 45 20 hTRB 31 14 59 30 hRARα 32 25 68 27 hRXRα 29 15 65 22 "N-term" = amino terminal domain "DNA-BD" = receptor DNA binding domain "Ligand-BD" = receptor ligand binding domain Similarly, the amino acid sequences of invention receptors XR2, XR4, XR5, and XR79 were compared with human RAR-alpha (hRARα) , human TR-beta (hTRβ) , human glucocorticoid (hGR) and human RXR-alpha (hRXRα) . As done in Table 1, the percentage of amino acid identity between the invention receptors and the other receptors are summarized in Tables 2 - 5, respectively. TABLE 2 Percent amino acid identity between receptor XR2 and hRARα, TRβ, hGR, and hRXRα Percent amino acid identity Comparison receptor Overall N-term DNA-BD Liqand-BD hGR 24 21 50 20 hTRβ 31 19 56 29 hRARα 33 21 55 32 hRXRα 27 19 52 23 ^'N-term" = amino terminal domain " "DNA-BD" = receptor DNA binding domain "Ligand-BD" = receptor ligand binding domain TABLE 3 Percent amino acid identity between receptor XR4 and hRARα, TRβ, hGR, and hRXRα Percent amino acid identity Comparison receptor Overall N-term DNA-BD Ligand-BD hGR 25 24 48 21 hTRβ 31 21 58 27 hRARα 32 22 62 29 hRXRα 33 24 62 28 "N-term" = amino terminal domain "DNA-BD" = receptor DNA binding domain "Ligand-BD" = receptor ligand binding domain TABLE 4 Percent amino acid identity between receptor XR5 and hRARα, TRβ, hGR, and hRXRα Percent amino acid identity Comparison receptor Overall N-term DNA-BD Ligand-BD hGR 20 20 44 20 hTRβ 24 14 52 22 hRARα 27 19 59 19 hRXRα 29 17 61 27 "N-term" = amino terminal domain "DNA-BD" = receptor DNA binding domain "Ligand-BD" = receptor ligand binding domain TABLE 5 Percent amino acid identity between receptor XR79 and hRARα, TRβ, hGR, and hRXRα Percent amino acid identity Comparison receptor Overall N-term DNA-BD Ligand-BD hGR 18 22 50 20 hTRβ 28 22 55 20 hRARα 24 14 59 18 hRXRα 33 20 65 24 ^•N-term" = amino terminal domain * "DNA-BD" = receptor DNA binding domain "Ligand-BD" = receptor ligand binding domain While the invention has been described in detail with reference to certain preferred embodiments thereof, it will be understood that modifications and variations are within the spirit and scope of that which is described and claimed. SUMMARY OF SEQUENCES Sequence ID No. 1 is a nucleotide sequence encoding novel receptor of the present invention designated as "hXRl". Sequence ID No. 2 is the amino acid sequence deduced from the nucleotide sequence set forth in Sequence ID No. 1 (variously referred to herein as receptor "XRl", "hXRl", "hXRl.pep" or "verHT19.pep") . Sequence ID No. 3 is a nucleotide sequence encoding the amino-terminal portion of the novel receptor of the present invention designated as "hXRlprime". Sequence ID No. 4 is the amino acid sequence deduced from the nucleotide sequence set forth in Sequence ID No. 3 (variously referred to herein as receptor "XRlprime", "hXRlprime", "hXRlprime.pep" or "verHT3.pep") . Sequence ID No. 5 is a nucleotide sequence encoding the amino-terminal portion of the novel receptor of the present invention designated as "hXRlprim2". Sequence ID No. 6 is the amino acid sequence deduced from the nucleotide sequence set forth in Sequence ID No. 5 (variously referred to herein as receptor "XRlprim2", "hXRlprim2", "hXRlprim2.pep" or "verHrδ.pep") . Sequence ID No. 7 is a nucleotide sequence encoding the novel receptor of the present invention designated as "hXR2". Sequence ID No. 8 is the amino acid sequence deduced from the nucleotide sequence set forth in Sequence ID No. 7 (variously referred to herein as receptor "XR2", "hXR2" or "hXR2.pep") . Sequence ID No. 9 is a nucleotide sequence encoding novel receptor of the present invention referred to herein as "mXR4". Sequence ID No. 10 is the amino acid sequence deduced from the nucleotide sequence of Sequence ID No. 9 (variously referred to herein as receptor "XR4", "mXR4" or "mXR4.pep") . Sequence ID No. 11 is the nucleotide sequence encoding the novel receptor of the present invention referred to as "mXR5". Sequence ID No. 12 is the amino acid sequence deduced from the nucleotide sequence of Sequence ID No. 11 (variously referred to herein as receptor "XR5", "mXR5" or "mXR5.pep"). Sequence ID No. 13 is the nucleotide sequence encoding the novel receptor of the present invention referred to as "dXR79". Sequence ID No. 14 is the amino acid sequence deduced from the nucleotide sequence of Sequence ID No. 13 (variously referred to herein as "XR79", "dXR79" or "dXR79.pep") . SEQUENCE LISTING (1) GENERAL INFORMATION: (i) APPLICANT: EVANS Ph.D., RONALD M. MANGELSDORF Ph.D., DAVID J. ONG Us. , ESTELITA S. ORO Ph.D., ANTHONY E. BORGMEYER Ph.D., UWE K. GIGUERE Ph.D., VINCENT NMN YAO Mr., TSO-PANG NMN (ii) TITLE OF INVENTION: NOVEL RECEPTORS (iii) NUMBER OF SEQUENCES: 14 (iv) CORRESPONDENCE ADDRESS: (A) ADDRESSEE: Pretty, Schroeder, Brueggemann _ Clark (B) STREET: 444 So. Flower St., Suite 2000 (C) CITY: Los Angeles (D) STATE: CA (E) COUNTRY: US (F) ZIP: 90071-2921 (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 #1.25 (vi) CURRENT APPLICATION DATA: (A) APPLICATION NUMBER: (B) FILING DATE : (C) CLASSIFICATION: (viii) ATTORNEY/AGENT INFORMATION: (A) NAME: Reiter Ph. D . , Stephen E. (B) REGISTRATION NUMBER: 31192 (C) REFERENCE/DOCKET NUMBER: P31 8936 ( ix) TELECOMMUNICATION INFORMATION: (A) TELEPHONE: (619) 535-9001 (B) TELEFAX: (619) 535-8949 (2) INFORMATION FOR SEQ ID NO: l : (i) SEQUENCE CHARACTERISTICS : (A) LENGTH: 1952 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS : single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA (vii) IMMEDIATE SOURCE: (B) CLONE: XRl (VERHT19.SEQ) (ix) FEATURE: (A) NAME KEY: CDS (B) LOCATION: 79..1725 (ix) FEATURE: (A) NAME KEY: misc_feature (B) LOCATION: 349..1952 (D) OTHER INFORMATION: /product- "Carboxy terminal portion of XRl variant verht3" (ix) FEATURE: (A) NAME KEY: misc feature (B) LOCATION: 352..1952 (D) OTHER INFORMATION: /product- "Carboxy terminal portion of XRl variant verhr5" (xi) SEQUENCE DESCRIPTION: SEQ ID N0:1: GAATTCGGGG ACTCCATAGT ACACTGGGGC AAAGCACAGC CCCAGTTTCT GGAGGCAGAT 60 GGGTAACCAG GAAAAGGC ATG AAT GAG GGG GCC CCA GGA GAC AGT GAC TTA 111 Met Asn Glu Gly Ala Pro Gly Asp Ser Asp Leu 1 5 10 GAG ACT GAG GCA AGA GTG CCG TGG TCA ATC ATG GGT CAT TGT CTT CGA 159 Glu Thr Glu Ala Arg Val Pro Trp Ser lie Met Gly His Cys Leu Arg 15 20 25 ACT GGA CAG GCC AGA ATG TCT GCC ACA CCC ACA CCT GCA GGT GAA GGA 207 Thr Gly Gin Ala Arg Met Ser Ala Thr Pro Thr Pro Ala Gly Glu Gly 30 35 40 GCC AGA AGC TCT TCA ACC TGT AGC TCC CTG AGC AGG CTG TTC TGG TCT 255 Ala Arg Ser Ser Ser Thr Cys Ser Ser Leu Ser Arg Leu Phe Trp Ser 45 50 55 CAA CTT GAG CAC ATA AAC TGG GAT GGA GCC ACA GCC AAG AAC TTT ATT 303 Gin Leu Glu His lie Asn Trp Asp Gly Ala Thr Ala Lys Asn Phe lie 60 65 70 75 AAT TTA AGG GAG TTC TTC TCT TTT CTG CTC CCT GCA TTG AGA AAA GCT 351 Asn Leu Arg Glu Phe Phe Ser Phe Leu Leu Pro Ala Leu Arg Lys Ala 80 85 90 CAA ATT GAA ATT ATT CCA TGC AAG ATC TGT GGA GAC AAA TCA TCA GGA 399 Gin lie Glu lie lie Pro Cys Lys lie Cys Gly Asp Lys Ser Ser Gly 95 100 105 ATC CAT TAT GGT GTC ATT ACA TGT GAA GGC TGC AAG GGC TTT TTC AGG 447 He His Tyr Gly Val He Thr Cys Glu Gly Cys Lys Gly Phe Phe Arg . 110 115 120 AGA AGT CAG CAA AGC AAT GCC ACC TAC TCC TGT CCT CGT CAG AAG AAC 495 Arg Ser Gin Gin Ser Asn Ala Thr Tyr Ser Cys Pro Arg Gin Lys Asn 125 130 135 TGT TTG ATT GAT CGA ACC AGT AGA AAC CGC TGC CAA CAC TGT CGA TTA 543 Cys Leu He Asp Arg Thr Ser Arg Asn Arg Cys Gin His Cys Arg Leu 140 145 150 155 CAG AAA TGC CTT GCC GTA GGG ATG TCT CGA GAT GCT GTA AAA TTT GGC 591 Gin Lys Cys Leu Ala Val Gly Met Ser Arg Asp Ala Val Lys Phe Gly 160 165 170 CGA ATG TCA AAA AAG CAG AGA GAC AGC TTG TAT GCA GAA GTA CAG AAA 639 Arg Met Ser Lys Lys Gin Arg Asp Ser Leu Tyr Ala Glu Val Gin Lys 175 180 185 CAC CGG ATG CAG CAG CAG CAG CGC GAC CAC CAG CAG CAG CCT GGA GAG 687 His Arg Met Gin Gin Gin Gin Arg Asp His Gin Gin Gin Pro Gly Glu 190 195 200 GCT GAG CCG CTG ACG CCC ACC TAC AAC ATC TCG GCC AAC GGG CTG ACG 735 Ala Glu Pro Leu Thr Pro Thr Tyr Asn He Ser Ala Asn Gly Leu Thr 205 210 215 GAA CTT CAC GAC GAC CTC AGT AAC TAC ATT GAC GGG CAC ACC CCT GAG 783 Glu Leu His Asp Asp Leu Ser Asn Tyr He Asp Gly His Thr Pro Glu 220 225 230 235 GGG AGT AAG GCA GAC TCC GCC GTC AGC AGC TTC TAC CTG GAC ATA CAG 831 Gly Ser Lys Ala Asp Ser Ala Val Ser Ser Phe Tyr Leu Asp He Gin 240 245 250 CCT TCC CCA GAC CAG TCA GGT CTT GAT ATC AAT GGA ATC AAA CCA GAA 879 Pro Ser Pro Asp Gin Ser Gly Leu Asp He Asn Gly He Lys Pro Glu 255 260 265 CCA ATA TGT GAC TAC ACA CCA GCA TCA GGC TTC TTT CCC TAC TGT TCG 927 Pro He Cys Asp Tyr Thr Pro Ala Ser Gly Phe Phe Pro Tyr Cys Ser 270 275 280 TTC ACC AAC GGC GAG ACT TCC CCA ACT GTG TCC ATG GCA GAA TTA GAA 975 Phe Thr Asn Gly Glu Thr Ser Pro Thr Val Ser Met Ala Glu Leu Glu 285 290 295 CAC CTT GCA CAG AAT ATA TCT AAA TCG CAT CTG GAA ACC TGC CAA TAC 1023 His Leu Ala Gin Asn He Ser Lys Ser His Leu Glu Thr Cys Gin Tyr 300 305 310 315 TTG AGA GAA GAG CTC CAG CAG ATA ACG TGG CAG ACC TTT TTA CAG GAA 1071 Leu Arg Glu Glu Leu Gin Gin He Thr Trp Gin Thr Phe Leu Gin Glu 320 325 330 GAA ATT GAG AAC TAT CAA AAC AAG CAG CGG GAG GTG ATG TGG CAA TTG 1119 Glu He Glu Asn Tyr Gin Asn Lys Gin Arg Glu Val Met Trp Gin Leu 335 340 345 TGT GCC ATC AAA ATT ACA GAA GCT ATA CAG TAT GTG GTG GAG TTT GCC 1167 Cys Ala He Lys He Thr Glu Ala He Gin Tyr Val Val Glu Phe Ala 350 355 360 AAA CGC ATT GAT GGA TTT ATG GAA CTG TGT CAA AAT GAT CAA ATT GTG 1215 Lys Arg He Asp Gly Phe Met Glu Leu Cys Gin Asn Asp Gin He Val 365 370 375 CTT CTA AAA GCA GGT TCT CTA GAG GTG GTG TTT ATC AGA ATG TGC CGT 1263 Leu Leu Lys Ala Gly Ser Leu Glu Val Val Phe He Arg Met Cys Ari 380 385 390 39! GCC TTT GAC TCT CAG AAC AAC ACC GTG TAC TTT GAT GGG AAG TAT GCC 1311 Ala Phe Asp Ser Gin Asn Asn Thr Val Tyr Phe Asp Gly Lys Tyr Ala 400 405 410 AGC CCC GAC GTC TTC AAA TCC TTA GGT TGT GAA GAC TTT ATT AGC TTT 1359 Ser Pro Asp Val Phe Lys Ser Leu Gly Cys Glu Asp Phe He Ser Phe 415 420 425 GTG TTT GAA TTT GGA AAG AGT TTA TGT TCT ATG CAC CTG ACT GAA GAT 1407 Val Phe Glu Phe Gly Lys Ser Leu Cys Ser Met His Leu Thr Glu Asp 430 435 440 GAA ATT GCA TTA TTT TCT GCA TTT GTA CTG ATG TCA GCA GAT CGC TCA 1455 Glu He Ala Leu Phe Ser Ala Phe Val Leu Met Ser Ala Asp Arg Ser 445 450 455 TGG CTG CAA GAA AAG GTA AAA ATT GAA AAA. CTG CAA CAG AAA ATT CAG 1503 Trp Leu Gin Glu Lys Val Lys He Glu Lys Leu Gin Gin Lys He Gin 460 465 470 475 CTA GCT CTT CAA CAC GTC CTA CAG AAG AAT CAC CGA GAA GAT GGA ATA 1551 Leu Ala Leu Gin His Val Leu Gin Lys Asn His Arg Glu Asp Gly He 480 485 490 CTA ACA AAG TTA ATA TGC AAG GTG TCT ACA TTA AGA GCC TTA TGT GGA 1599 Leu Thr Lys Leu He Cys Lys Val Ser Thr Leu Arg Ala Leu Cys Gly 495 500 505 CGA CAT ACA GAA AAG CTA ATG GCA TTT AAA GCA ATA TAC CCA GAC ATT 1647 Arg His Thr Glu Lys Leu Met Ala Phe Lys Ala He Tyr Pro Asp He 510 515 520 GTG CGA CTT CAT TTT CCT CCA TTA TAC AAG GAG TTG TTC ACT TCA GAA 1695 Val Are Leu His Phe Pro Pro Leu Tyr Lys Glu Leu Phe Thr Ser Glu 525 530 535 TTT GAG CCA GCA ATG CAA ATT GAT GGG TAAATGTTAT CACCTAAGCA 1742 Phe Glu Pro Ala Met Gin He Asp Gly 540 545 CTTCTAGAAT GTCTGAAGTA CAAACATGAA AAACAAACAA AAAAATTAAC CGAGACACTT 1802 TATATGGCCC TGCACAGACC TGGAGCGCCA CACACTGCAC ATCTTTTGGT GATCGGGGTC 1862 AGGCAAAGGA GGGGAAACAA TGAAAACAAA TAAAGTTGAA CTTGTTTTTC TCAAAAAAAA 1922 AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA 1952 (2) INFORMATION FOR SEQ ID NO:2: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 548 amino acids (B) TYPE: amino acid (D) TOPOLOGY: linear (Ii) MOLECULE TYPE: protein (xi) SEQUENCE DESCRIPTION: SEQ ID NO:2: Met Asn Glu Gly Ala Pro Gly Asp Ser Asp Leu Glu Thr Glu Ala Arg 1 5 10 15 Val Pro Trp Ser He Met Gly His Cys Leu Arg Thr Gly Gin Ala Arg 20 25 30 Met Ser Ala Thr Pro Thr Pro Ala Gly Glu Gly Ala Arg Ser Ser Ser 35 40 45 Thr Cys Ser Ser Leu Ser Arg Leu Phe Trp Ser Gin Leu Glu His He 50 55 60 Asn Trp Asp Gly Ala Thr Ala Lys Asn Phe He Asn Leu Arg Glu Phe 65 70 75 80 Phe Ser Phe Leu Leu Pro Ala Leu Arg Lys Ala Gin He Glu He He 85 90 95 Pro Cys Lys He Cys Gly Asp Lys Ser Ser Gly He His Tyr Gly Val 100 105 1 11.0 He Thr Cys GGlluu GGllyy CCyyss LLyyss GGllyy PPhhee PPhhee AArrgg AArrgg SSeerr Gin Gin Ser 111155 112200 125 Asn Ala Thr Tyr Ser Cys Pro Arg Gin Lys Asn Cys Leu He Asp Arg 130 135 140 Thr .Ser Arg Asn Arg Cys Gin His Cys Arg Leu Gin Lys Cys Leu Ala 145 150 155 160 Val Gly Met Ser Arg Asp Ala Val Lys Phe Gly Arg Met Ser Lys Lys 165 170 175 Gin Arg Asp Ser Leu Tyr Ala Glu Val Gin Lys His Arg Met Gin Gin 180 185 190 Gin Gin Arg Asp His Gin Gin Gin Pro Gly Glu Ala Glu Pro Leu Thr 195 200 205 Pro Thr Tyr Asn He Ser Ala Asn Gly Leu Thr Glu Leu His Asp Asp 210 215 220 Leu Ser Asn Tyr He Asp Gly His Thr Pro Glu Gly Ser Lys Ala Asp 225 230 235 240 Ser Ala Val Ser Ser Phe Tyr Leu Asp He Gin Pro Ser Pro Asp Gin 245 250 255 Ser Gly Leu Asp He Asn Gly He Lys Pro Glu Pro He Cys Asp Tyr 260 265 . 270 Thr Pro Ala Ser Gly Phe Phe Pro Tyr Cys Ser Phe Thr Asn Gly Glu 275 280 285 Thr Ser Pro Thr Val Ser Met Ala Glu Leu Glu His Leu Ala Gin Asn 290 295 300 He Ser Lys Ser His Leu Glu Thr Cys Gin Tyr Leu Arg Glu Glu Leu 305 310 315 320 Gin Gin He Thr Trp Gin Thr Phe Leu Gin Glu Glu He Glu Asn Tyr 325 330 335 Gin Asn Lys Gin Arg Glu Val Met Trp Gin Leu Cys Ala He Lys He 340 345 350 Thr Glu Ala He Gin Tyr Val Val Glu Phe Ala Lys Arg He Asp Gly 355 360 365 Phe Met Glu Leu Cys Gin Asn Asp Gin He Val Leu Leu Lys Ala Gly 370 375 380 Ser Leu Glu Val Val Phe He Arg Met Cys Arg Ala Phe Asp Ser Gin 385 390 395 400 Asn Asn Thr Val Tyr Phe Asp Gly Lys Tyr Ala Ser Pro Asp Val Phe 405 410 415 Lys Ser Leu Gly Cys Glu Asp Phe He Ser Phe Val Phe Glu Phe Gly 420 425 430 Lys Ser Leu Cys Ser Met His Leu Thr Glu Asp Glu He Ala Leu Phe 435 440 445 Ser Ala Phe Val Leu Met Ser Ala Asp Arg Ser Trp Leu Gin Glu Lys 450 455 460 Val Lys He Glu Lys Leu Gin Gin Lys He Gin Leu Ala Leu Gin His 465 470 475 480 Val Leu Gin Lys Asn His Arg Glu Asp Gly He Leu Thr Lys Leu He 485 490 495 Cys Lys Val Ser Thr Leu Arg Ala Leu Cys Gly Arg His Thr Glu Lys 500 505 510 Leu Met Ala Phe Lys Ala He Tyr Pro Asp He Val Arg Leu His Phe 515 520 525 Pro Pro Leu Tyr Lys Glu Leu Phe Thr Ser Glu Phe Glu Pro Ala Met 530 535 540 Gin He Asp Gly 545 (2) INFORMATION FOR SEQ ID NO:3: (I) SEQUENCE CHARACTERISTICS: (A) LENGTH: 386 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA (vii) IMMEDIATE SOURCE : (B) CLONE: AMINO TERMINAL PORTION OF XR1PRIME (VERHT3. SEQ) (Ix) FEATURE: (A) NAME KEY: CDS (B) LOCATION: 90..386 (xi) SEQUENCE DESCRIPTION: SEQ ID NO:3: CCATCTGTCT GATCACCTTG GACTCCATAG TACACTGGGG CAAAGCACAG CCCCAGTTTC 60 TGGAGGCAGA TGGGTAACCA GGAAAAGGC ATG AAT GAG GGG GCC CCA GGA GAC 113 Met Asn Glu Gly Ala Pro Gly Asp 1 5 AGT GAC TTA GAG ACT GAG GCA AGA GTG CCG TGG TCA ATC ATG GGT CAT 161 Ser Asp Leu Glu Thr Glu Ala Arg Val Pro Trp Ser He Met Gly His 10 15 20 TGT CTT CGA ACT GGA CAG GCC AGA ATG TCT GCC ACA CCC ACA CCT GCA 209 Cys Leu Arg Thr Gly Gin Ala Arg Met Ser Ala Thr Pro Thr Pro Ala 25 30 35 40 GGT GAA GGA GCC AGA AGG GAT GAA CTT TTT GGG ATT CTC CAA ATA CTC 257 Gly Glu Gly Ala Arg Arg Asp Glu Leu Phe Gly He Leu Gin He Leu 45 50 55 CAT CAG TGT ATC CTG TCT TCA GGT GAT GCT TTT GTT CTT ACT GGC GTC 305 His Gin Cys He Leu Ser Ser Gly Asp Ala Phe Val Leu Thr Gly Val 60 65 70 TGT TGT TCC TGG AGG CAG AAT GGC AAG CCA CCA TAT TCA CAA AAG GAA 353 Cys Cys Ser Trp Arg Gin Asn Gly Lys Pro Pro Tyr Ser Gin Lys Glu 75 80 85 GAT AAG GAA GTA CAA ACT GGA TAC ATG AAT GCT 386 Asp Lys Glu Val Gin Thr Gly Tyr Met Asn Ala 90 95 WO 93/06215 _-3, « 9..-. (2) INFORMATION FOR SEQ ID NO:4: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 99 amino acids (B) TYPE: amino acid (D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (xi) SEQUENCE DESCRIPTION: SEQ ID NO: : Met Asn Glu Gly Ala Pro Gly Asp Ser Asp Leu Glu Thr Glu Ala Arg 1 5 10 15 Val Pro Trp Ser He Met Gly His Cys Leu Arg Thr Gly Gin Ala Arg 20 25 30 Met Ser Ala Thr Pro Thr Pro Ala Gly Glu Gly Ala Arg Arg Asp Glu 35 40 45 Leu Phe Gly He Leu Gin He Leu His Gin Cys He Leu Ser Ser Gly 50 55 60 Asp Ala Phe Val Leu Thr Gly Val Cys Cys Ser Trp Arg Gin Asn Gly 65 70 75 80 Lys Pro Pro Tyr Ser Gin Lys Glu Asp Lys Glu Val Gin Thr Gly Tyr 85 90 95 Met Asn Ala (2 ) INFORMATION FOR SEQ ID NO : 5 : ( I ) SEQUENCE CHARACTERISTICS : (A) LENGTH: 300 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS : single (D) TOPOLOGY : linear ( ii ) MOLECULE TYPE : cDNA (vii) IMMEDIATE SOURCE: (B) CLONE: AMINO TERMINAL PORTION OF XR1PRIM2 (VERHR5 . SEQ) ( ix) FEATURE: (A) NAME/KEY: CDS (B) LOCATION: 103..300 (xi) SEQUENCE DESCRIPTION : SEQ ID NO : 5 : GTTTTTTTTT T -TTTTTGGT ACCATAGAGT TGCTCTGAAA ACAGAAGATA GAGGGAGTCT 60 CGGAGCTCGC CATCTCCAGC GATCTCTACA TTGGGAAAAA AC ATG GAG TCA GCT 114 Met Glu Ser Ala 1 CCG GCA AGG GAG ACC CCG CTG AAC CAG GAA TCC GCC GCC CCC GAC CCC 162 Pro Ala Arg Glu Thr Pro Leu Asn Gin Glu Ser Ala Ala Pro Asp Pro 5 10 15 20 GCC GCC AGC GAG CCA GGC AGC AGC GGC GCG GAC GCG GCC GCC GGC TCC 210 Ala Ala Ser Glu Pro Gly Ser Ser Gly Ala Asp Ala Ala Ala Gly Ser 25 30 35 CGC AAG AGC GAG CCG CCT GCC CCG GTG CGC AGA CAG AGC TAT TCC AGC 258 Arg Lys Ser Glu Pro Pro Ala Pro Val Arg Arg Gin Ser Tyr Ser Ser 40 45 50 ACC AGC AGA GGT ATC TCA GTA ACG AAG AAG ACA CAT ACA TCT 300 Thr Ser Arg Gly He Ser Val Thr Lys Lys Thr His Thr Ser 55 60 65 (2) INFORMATION FOR SEQ ID NO:6: (I) SEQUENCE CHARACTERISTICS: (A) LENGTH: 66 amino acids (B) TYPE: amino acid (D) TOPOLOGY: linear (Ii) MOLECULE TYPE: protein (xi) SEQUENCE DESCRIPTION: SEQ ID NO:6: Met Glu Ser Ala Pro Ala Arg Glu Thr Pro Leu Asn Gin Glu Ser Ala 1 5 10 15 Ala Pro Asp Pro Ala Ala Ser Glu Pro Gly Ser Ser Gly Ala Asp Ala 20 25 30 Ala Ala Gly Ser Arg Lys Ser Glu Pro Pro Ala Pro Val Arg Arg Gin 35 40 45 Ser Tyr Ser Ser Thr Ser Arg Gly He Ser Val Thr Lys Lys Thr His 50 55 60 Thr Ser 65 (2) INFORMATION FOR SEQ ID NO: 7 : (I) SEQUENCE CHARACTERISTICS : (A) LENGTH: 1659 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS : single (D) TOPOLOGY: linear (II) MOLECULE TYPE: cDNA (vii) IMMEDIATE SOURCE: (B) CLONE: XR2 (XR2.SEG) (ix) FEATURE: (A) NAME/KEY: CDS (B) LOCATION: 148..1470 (xi) SEQUENCE DESCRIPTION: SEQ ID N0:7: GATATCCGTG ACATCATTGC CTGAGTCCAC TGCAAAAAGC TGTCCCCAGA GCAGGAGGGC 60 AATGACAGCT CCCAGGGCAC TCATCTTGAC TGCTCTTGCC TGGGGATTTG GACAGTGCCT 120 TGGTAATGAC CAGGGCTCCA GAAAGAG ATG TCC TTG TGG CTG GGG GCC CCT 171 Met Ser Leu Trp Leu Gly Ala Pro 1 5 GTG CCT GAC ATT CCT CCT GAC TCT GCG GTG GAG CTG TGG AAG CCA GGC 219 Val Pro Asp He Pro Pro Asp Ser Ala Val Glu Leu Trp Lys Pro Gly 10 15 20 GCA CAG GAT GCA AGC AGC CAG GCC CAG GGA GGC AGC AGC TGC ATC CTC 267 Ala Gin Asp Ala Ser Ser Gin Ala Gin Gly Gly Ser Ser Cys He Leu 25 30 35 40 AGA GAG GAA GCC AGG ATG CCC CAC TCT GCT GGG GGT ACT GCA GAG CCC 315 Arg Glu Glu Ala Arg Met Pro His Ser Ala Gly Gly Thr Ala Glu Pro 45 50 55 ACA GCC CTG CTC ACC AGG GCA GAG CCC CCT TCA GAA CCC ACA GAG ATC 363 Thr Ala Leu Leu Thr Arg Ala Glu Pro Pro Ser Glu Pro Thr Glu He 60 65 70 CGT CCA CAA AAG CGG AAA AAG GGG CCA GCC CCC AAA ATG CTG GGG AAC 411 Arg Pro Gin Lys Arg Lys Lys Gly Pro Ala Pro Lys Met Leu Gly Asn 75 80 85 GAG CTA TGC AGC GTG TGT GGG GAC AAG GCC TCG GGC TTC CAC TAC AAT 459 Glu Leu Cys Ser Val Cys Gly Asp Lys Ala Ser Gly Phe His Tyr Asn 90 95 100 GTT CTG AGC TGC GAG GGC TGC AAG GGA TTC TTC CGC CGC AGC GTC ATC 507 Val Leu Ser Cys Glu Gly Cys Lys Gly Phe Phe Arg Arg Ser Val He 105 110 115 120 AAG GGA GCG CAC TAC ATC TGC CAC AGT GGC GGC CAC TGC CCC ATG GAC 555. Lys Gly Ala His Tyr He Cys His Ser Gly Gly His Cys Pro Met Asp 125 130 135 ACC TAC ATG CGT CGC AAG TGC CAG GAG TGT CGG CTT CGC AAA TGC CGT 603 Thr Tyr Met Arg Arg Lys Cys Gin Glu Cys Arg Leu Arg Lys Cys Arg 140 145 150 CAG GCT GGC ATG CGG GAG GAG TGT GTC CTG TCA GAA GAA CAG ATC CGC 651 Gin Ala Gly Met Arg Glu Glu Cys Val Leu Ser Glu Glu Gin He Arg 155 160 165 CTG AAG AAA CTG AAG CGG CAA GAG GAG GAA CAG GCT CAT GCC ACA TCC 699 Leu Lys Lys Leu Lys Arg Gin Glu Glu Glu Gin Ala His Ala Thr Ser 170 175 180 TTG CCC CCC AGG CGT TCC TCA CCC CCC CAA ATC CTG CCC CAG CTC AGC 747 Leu Pro Pro Arg Arg Ser Ser Pro Pro Gin He Leu Pro Gin Leu Ser 185 190 195 200 CCG GAA CAA CTG GGC ATG ATC GAG AAG CTC GTC GCT GCC CAG CAA CAG 795 Pro Glu Gin Leu Gly Met He Glu Lys Leu Val Ala Ala Gin Gin Gin 205 210 215 TGT AAC CGG CGC TCC TTT TCT GAC CGG CTT CGA GTC ACG CCT TGG CCC 843 Cys Asn Arg Arg Ser Phe Ser Asp Arg Leu Arg Val Thr Pro Trp Pro 220 225 230 ATG GCA CCA GAT CCC CAT AGC CGG GAG GCC CGT CAG CAG CGC TTT GCC 891 Met Ala Pro Asp Pro His Ser Arg Glu Ala Arg Gin Gin Arg Phe Ala 235 240 245 CAC TTC ACT GAG CTG. GCC ATC GTC TCT GTG CAG GAG ATA GTT GAC TTr 939 His Phe Thr Glu Leu Ala He Val Ser Val Gin Glu He Val Asp Phe 250 255 260 GCT AAA CAG CTA CCC GGC TTC CTG CAG CTC AGC CGG GAG GAC CAG ATT 987 Ala Lys Gin Leu Pro Gly Phe Leu Gin Leu Ser Arg Glu Asp Gin He 265 270 275 280 GCC CTG CTG AAG ACC TCT GCG ATC GAG GTG ATG CTT CTG GAG ACA TCT 1035 Ala Leu Leu Lys Thr Ser Ala He Glu Val Met Leu Leu Glu Thr Ser 285 290 295 CGG AGG TAC 1083 Arg Arg Tyr AGT TAT AAC CGG GAA GAC TTT GCC AAA GCA GGG CTG CAA GTG GAA TTC 1131 Ser Tyr Asn Arg Glu Asp Phe Ala Lys Ala Gly Leu Gin Val Glu Phe 315 320 325 ATC AAC CCC ATC TTC GAG TTC TCC AGG GCC ATG AAT GAG CTG CAA CTC 1179 He Asn Pro He Phe Glu Phe Ser Arg Ala Met Asn Glu Leu Gin Leu 330 335 340 AAT GAT GCC GAG TTT GCC TTG CTC " ATT GCT ATC AGC ATC TTC TCT GCA 1227 Asn Asp Ala Glu Phe Ala Leu Leu He Ala He Ser He Phe Ser Ala 345 350 355 360 GAC CGG CCC AAC GTG CAG GAC CAG CTC CAG GTG GAG AGG CTG CAG CAC 1275 Asp Arg Pro Asn Val Gin Asp Gin Leu Gin Val Glu Arg Leu Gin His 365 370 375 ACA TAT GTG GAA GCC CTG CAT GCC TAC GTC TCC ATC CAC CAT CCC CAT 1323 Thr Tyr Val Glu Ala Leu His Ala Tyr Val Ser He His His Pro His 380 385 390 GAC CGA CTG ATG TTC CCA CGG ATG CTA ATG AAA CTG GTG AGC CTC CGG 1371 Asp Arg Leu Met Phe Pro Arg Met Leu Met Lys Leu Val Ser Leu Arg 395 400 405 ACC CTG AGC AGC GTC CAC TCA GAG CAA GTG TTT GCA CTG CGT CTG CAG 1419 Thr Leu Ser Ser Val His Ser Glu Gin Val Phe Ala Leu Arg Leu Gin 410 415 420 GAC AAA AAG CTC CCA CCG CTG CTC TCT GAG ATC TGG GAT GTG CAC GAA 1467 Asp Lys Lys Leu Pro Pro Leu Leu Ser Glu He Trp Asp Val His Glu 425 430 435 440 TGACTGTTCT GTCCCCATAT TTTCTGTTTT CTTGGCCGGA TGGCTGAGGC CTGGTGGCTG 1527 CCTCCTAGAA GTGGAACAGA CTGAGAAGGG CAAACATTCC TGGGAGCTGG GCAAGGAGAT 1587 CCTCCCGTGG CATTAAAAGA GAGTCAAAGG GTAAAAAAAA AAAAAAAAAA AAAAAAAAAA 1647 AAAAAGGAAT TC 1659 (2) INFORMATION FOR SEQ ID NO:8: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 440 amino acids (B) TYPE: amino acid (D) TOPOLOGY: linear (II) MOLECULE TYPE: protein (xi) SEQUENCE DESCRIPTION: SEQ ID NO:8: Met Ser Leu Trp Leu Gly Ala Pro Val Pro Asp He Pro Pro Asp Ser 1 5 10 15 Ala Val Glu Leu Trp Lys Pro Gly Ala Gin Asp Ala Ser Ser Gin Ala 20 25 30 Gin Gly Gly Ser Ser Cys He Leu Arg Glu Glu Ala Arg Met Pro His 35 40 45 Ser Ala Gly Gly Thr Ala Glu Pro Thr Ala Leu Leu Thr Arg Ala Glu 50 55 60 Pro Pro Ser Glu Pro Thr Glu He Arg Pro Gin Lys Arg Lys Lys Gly 65 70 75 80 Pro Ala Pro Lys Met Leu Gly Asn Glu Leu Cys Ser Val Cys Gly Asp 85 90 95 Lys Ala Ser Gly Phe His Tyr Asn Val Leu Ser Cys Glu Gly Cys Lys 100 105 110 Gly Phe Phe Arg Arg Ser Val He Lys Gly Ala His Tyr He Cys His 115 120 125 Ser Gly Gly His Cys Pro Met Asp Thr Tyr Met Arg Arg Lys Cys Gin 130 135 140 Glu Cys Arg Leu Arg Lys Cys Arg Gin Ala Gly Met Arg Glu Glu Cys 145 150 155 160 Val Leu Ser Glu Glu Gin lie Arg Leu Lys Lys Leu Lys Arg Gin Glu 165 170 175 Glu Glu Gin Ala His Ala Thr Ser Leu Pro Pro Arg Arg Ser Ser Pro 180 185 190 Pro Gin He Leu Pro Gin Leu Ser Pro Glu Gin Leu Gly Met He Glu 195 200 205 Lys Leu Val Ala Ala Gin Gin Gin Cys Asn Arg Arg Ser Phe Ser Asp 210 215 220 Arg Leu Arg Val Thr Pro Trp Pro Met Ala Pro Asp Pro His Ser Ar 225 230 235 24 Glu Ala Arg Gin Gin Arg Phe Ala His Phe Thr Glu Leu Ala He Val 245 250 255 Ser Val Gin Glu He Val Asp Phe Ala Lys Gin Leu Pro Gly Phe Leu 260 265 270 Gin Leu Ser Arg Glu Asp Gin He Ala Leu Leu Lys Thr Ser Ala He 275 280 285 Glu Val Met Leu Leu Glu Thr Ser Arg Arg Tyr Asn Pro Gly Ser Glu 290 295 300 Ser He Thr Phe Leu Lys Asp Phe Ser Tyr Asn Arg Glu Asp Phe Ala 305 310 315 320 Lys Ala Gly Leu Gin Val Glu Phe He Asn Pro He Phe Glu Phe Ser 325 330 335 Arg Ala Met Asn Glu Leu Gin Leu Asn Asp Ala Glu Phe Ala Leu Leu 340 345 350 He Ala He Ser He Phe Ser Ala Asp Arg Pro Asn Val Gin Asp Gin 355 360 365 Leu Gin Val Glu Arg Leu Gin His Thr Tyr Val Glu Ala Leu His Ala 370 375 380 Tyr Val Ser He His His Pro His Asp Arg Leu Met Phe Pro Arg Met 385 390 395 400 Leu Met Lys Leu Val Ser Leu Arg Thr Leu Ser Ser Val His Ser Glu 405 410 415 Gin Val Phe Ala Leu Arg Leu Gin Asp Lys Lys Leu Pro Pro Leu Leu 420 425 430 Ser Glu He Trp Asp Val His Glu 435 440 (2) INFORMATION FOR SEQ ID NO:9: (t) SEQUENCE CHARACTERISTICS: (A) LENGTH: 2009 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA (vii) IMMEDIATE SOURCE: (B) CLONE: XR4 (XR4.SEG) (Ix) FEATURE: (A) NAME KEY: CDS (B) LOCATION: 263..1582 (xl) SEQUENCE DESCRIPTION: SEQ ID NO:9: GAATTCCCTG GGGATTAATG GGAAAAGTTT TGGCAGGAGC TGGGGGATTC TGCGGAGCCT 60 GCGGGACGGC GGCAGCGGCG CGAGAGGCGG CCGGGACAGT GCTGTGCAGC GGTGTGGGTA 120 TGCGCATGGG ACTCACTCAG AGGCTCCTGC TCACTGACAG ATGAAGACAA ACCCACGGTA 180 AAGGCAGTCC ATCTGCGCTC AGACCCAGAT GGTGGCAGAG CTATGACCAG GCCTGCAGCG 240 CCACGCCAAG TGGGGGTCAG TC ATG GAA CAG CCA CAG GAG GAG ACC CCT GAG 292 Met Glu Gin Pro Gin Glu Glu Thr Pro Glu 1 5 10 GCC CGG GAA GAG GAG AAA GAG GAA GTG GCC ATG GGT GAC GGA GCC CCG 340 Ala Arg Glu Glu Glu Lys Glu Glu Val Ala Met Gly Asp Gly Ala Pro 15 20 25 GAG CTC AAT GGG GGA CCA GAA CAC ACG CTT CCT TCC AGC AGC TGT GCA 388 Glu Leu Asn Gly Gly Pro Glu His Thr Leu Pro Ser Ser Ser Cys Ala 30 35 40 GAC CTC TCC CAG AAT TCC TCC CCT TCC TCC CTG CTG GAC CAG CTG CAG 436 Asp Leu Ser Gin Asn Ser Ser Pro Ser Ser Leu Leu Asp Gin Leu Gi 45 50 55 ATG GGC TGT GAT GGG GCC TCA GGC GGC AGC CTC AAC ATG GAA TGT CGG 484 Met Gly Cys Asp Gly Ala Ser Gly Gly Ser Leu Asn Met Glu Cys Arg 60 65 70 GTG TGC GGG GAG AAG GCC TCG GGC TTC CAC TAC GGG GTC CAC GCG TGC 532 Val Cys Gly Asp Lys Ala Ser Gly Phe His Tyr Gly Val His Ala Cys 75 80 85 90 GAG GGG TGC AAG GGC TTC TTC CGC CGG ACA ATC CGC ATG AAG CTC GAG 580 Glu Gly Cys Lys Gly Phe Phe Arg Arg Thr He Arg Met Lys Leu Glu 95 100 105 TAT GAG AAG TGC GAT CGG ATC TGC AAG ATC CAG AAG AAG AAC CGC AAC 628 Tyr Glu Lys Cys Asp Are He Cys Lys He Gin Lys Lys Asn Arg Asn 110 115 120 AAG TGT CAG TAC TGC CGC TTC CAG AAG TGC CTG GCA CTC GGC ATG TCG 676 Lys Cys Gin Tyr Cys Arg Phe Gin Lys Cys Leu Ala Leu Gly Met Ser 125 130 135 CAC AAC GCT ATC CGC TTT GGA CGG ATG CCG GAC GGC GAG AAG AGG AAG 724 His Asn Ala He Arg Phe Gly Arg Met Pro Asp Gly Glu Lys Arg Lys 140 145 150 CTG GTG GCG GGG CTG ACT GCC AGC GAG GGG TGC CAG CAC AAC CCC CAG 772 Leu Val Ala Gly Leu Thr Ala Ser Glu Gly Cys Gin His Asn Pro Gin 155 160 165 170 CTG GCC GAC CTG AAG GCC TTC TCT AAG CAC ATC TAC AAC GCC TAC CTG 820 Leu Ala Asp Leu Lys Ala Phe Ser Lys His He Tyr Asn Ala Tyr Leu 175 180 185 AAA AAC TTC AAC ATG ACC AAA AAG AAG GCC CGG AGC ATC CTC ACC GGC 868 Lys Asn Phe Asn Met Thr Lys Lys Lys Ala Arg Ser He Leu Thr Gly 190 195 200 AAG TCC AGC CAC AAC GCA CCC TTT GTC ATC CAC GAC ATC GAG ACA CTG 916 Lys Ser Ser His Asn Ala Pro Phe Val He His Asp He Glu Thr Leu 205 210 215 TGG CAG GCA GAG AAG GGC CTG GTG TGG AAA CAG CTG GTG AAC GTG CCG 964 Trp Gin Ala Glu Lys Gly Leu Val Trp Lys Gin Leu Val Asn Val Pro 220 225 230 CCC TAC AAC GAG ATC AGT GTG CAC GTG TTC TAC CGC TGC CAG TCC ACC 1012 Pro Tyr Asn Glu He Ser Val His Val Phe Tyr Arg Cys Gin Ser Thr 235 240 245 250 ACA GTG GAG ACA GTC CGA GAG CTC ACC GAG TTC GCC AAG AAC ATC CCC 1060 Thr Val Glu Thr Val Arg Glu Leu Thr Glu Phe Ala Lys Asn He Pro 255 260 265 AAC TTC AGC AGC CTC TTC CTC AAT GAC CAG GTG ACC CTC CTC AAG TAT 1108 Asn Phe Ser Ser Leu Phe Leu Asn Asp Gin Val Thr Leu Leu Lys Tyr 270 275 280 GGC GTG CAC GAG GCC ATC TTT GCC ATG CTG GCC TCC ATC GTC AAC AAA 1156 Gly Val His Glu Ala He Phe Ala Met Leu Ala Ser He Val Asn Lys 285 290 295 GAC GGG CTG CTG GTG GCC AAC GGC AGT GGC TTC GTC ACC CAC GAG TTC 1204 Asp Gly Leu Leu Val Ala Asn Gly Ser Gly Phe Val Thr His Glu Phe 300 305 310 TTG CGA AGT CTC CGC AAG CCC TTC AGT GAC ATC ATT GAG CCC AAG TTC 1252 Leu Arg Ser Leu Arg Lys Pro Phe Ser Asp He He Glu Pro Lys Phe 315 320 325 330 GAG TTT GCT GTC AAG TTC AAT GCG CTG GAG CTC GAT GAC AGT GAC CTG 1300 Glu Phe Ala Val Lys Phe Asn Ala Leu Glu Leu Asp Asp Ser Asp Leu 335 340 345 GCG CTC TTC ATC GCG GCC ATC ATT CTG TGT GGA GAC CGG CCA GGC CTC 1348 Ala Leu Phe He Ala Ala He He Leu Cys Gly Asp Arg Pro Gly Leu 350 355 360 ATG AAT GTG CCC CAG GTA GAA GCC ATC CAG GAC ACC ATT CTG CGG GCT 1396 Met Asn Val Pro Gin Val Glu Ala He Gin Asp Thr He Leu Arg Ala 365 370 375 CTA GAA TTC CAT CTG CAG GTC AAC CAC CCT GAC AGC CAG TAC CTC TTC 1444 Leu Glu Phe His Leu Gin Val Asn His Pro Asp Ser Gin Tyr Leu Phe 380 385 390 CCC AAG CTG CTG CAG AAG ATG GCA GAC CTG CGG CAC GTG GTC ACT GAG 1492 Pro Lys Leu Leu Gin Lys Met Ala Asp Leu Arg His Val Val Thr Glu 395 400 405 410 CAT GCC CAG ATG ATG CAG TGG CTA AAG AAG ACG GAG AGT GAG ACC TTG 1540 His Ala Gin Met Met Gin Trp Leu Lys Lys Thr Glu Ser Glu Thr Leu 415 420 425 CTG CAC CCC CTG CTC CAG GAA ATC TAC AAG GAC ATG TAC TAAGGCCGCA 1589 Leu His Pro Leu Leu Gin Glu He Tyr Lys Asp Met Tyr 430 435 440 GCCCAGGCCT CCCCTCAGGC TCTGCTGGGC CCAGCCACGG ACTGTTCAGA GGACCAGCCA 1649 CAGGCACTGG CAGTCAAGCA GCTAGAGCCT ACTCACAACA CTCCAGACAC GTGCCCCAGA 1709 CTCTTCCCCC AACACCCCCA CCCCCACCAA CCCCCCCATT CCCCCAACCC CCCTCCCCCA 1769 CCCCGCTCTC CCCATGGCCC GTTTCCTGTT TCTCCTCAGC ACCTCCTGTT CTTGCTGTCT 1829 CCCTAGCGCC CTTGCTCCCC CCCCTTTGCC TTCCTTCTCT AGCATCCCCC TCCTCCCAGT 1889 CCTCACATTT GTCTGATTCA CAGCAGACAG CCCGTTGGTA CGCTCACCAG CAGCCTAAAA 1949 GCAGTGGGCC TGTGCTGGCC CAGTCCTGCC TCTCCTCTCT ATCCCCTTCA AAGGGAATTC 2009 C2) INFORMATION FOR SEQ ID NO:10: (1) SEQUENCE CHARACTERISTICS: (A) LENGTH: 439 amino acids (B) TYPE: amino acid (D) TOPOLOGY: linear (II) MOLECULE TYPE: protein (xi) SEQUENCE DESCRIPTION: SEQ ID NO:10: Met Glu Gin Pro Gin Glu Glu Thr Pro Glu Ala Arg Glu Glu Glu Lys 1 5 10 15 Glu Glu Val Ala Met Gly Asp Gly Ala Pro Glu Leu Asn Gly Gly Pro 20 25 30 Glu His Thr Leu Pro Ser Ser Ser Cys Ala Asp Leu Ser Gin Asn Ser 35 40 45 Ser Pro Ser Ser Leu Leu Asp Gin Leu Gin Met Gly Cys Asp Gly Ala 50 55 60 ' Ser Gly Gly Ser Leu Asn Met Glu Cys Arg Val Cys Gly Asp Lys Ala 65 70 75 80 Ser Gly Phe His Tyr Gly Val His Ala Cys Glu Gly Cys Lys Gly Phe 85 ?9:0 95 Phe Arg Arg Thr H Elee AArrgg MMeett LLyyss LLeeuu GGlluu TTyyrr GGlluu LLyyss CC_yιs Asp Arg 110000 110055 11110 He Cys Lys HHee GGiinn LLyyss LLyyss AAssnn AArrgg AAssnn LLyyss CCyyss GGiinn Tyr Cys Arg 11L55 120 125 Phe Gin Lys Cys Leu Ala Leu Gly Met Ser His Asn Ala He Arg Phe 130 135 140 Gly Arg Met Pro Asp Gly Glu Lys Arg Lys Leu Val Ala Gly Leu Thr 145 150 155 160 Ala Ser Glu Gly Cys Gin His Asn Pro Gin Leu Ala Asp Leu Lys Ala 165 170 175 Phe Ser Lys His He Tyr Asn Ala Tyr Leu Lys Asn Phe Asn Met Thr 180 185 190 Lys Lys Lys Ala Arg Ser He Leu Thr Gly Lys Ser Ser His Asn Ala 195 200 205 Pro Phe Val He His Asp He Glu Thr Leu Trp Gin Ala Glu Lys Gly 210 215 220 Leu Val Trp Lys Gin Leu Val Asn Val Pro Pro Tyr Asn Glu He Ser 225 230 235 240 Val His Val Phe Tyr Arg Cys Gin Ser Thr Thr Val Glu Thr Val Arg 245 250 255 Glu Leu Thr Glu Phe Ala Lys Asn He Pro Asn Phe Ser Ser Leu Phe 260 265 270 Leu Asn Asp Gin Val Thr Leu Leu Lys Tyr Gly Val His Glu Ala He 275 280 285 Phe Ala Met Leu Ala Ser He Val Asn Lys Asp Gly Leu Leu Val Ala 290 295 300 Asn Gly Ser Gly Phe Val Thr His Glu Phe Leu Arg Ser Leu Arg Lys 305 310 315 320 Pro Phe Ser Asp He He Glu Pro Lys Phe Glu Phe Ala Val Lys Phe 325 330 335 Asn Ala Leu Glu Leu Asp Asp Ser Asp Leu Ala Leu Phe He Ala Ala 340 345 350 He He Leu Cys Gly Asp Arg Pro Gly Leu Met Asn Val Pro Gin Val 355 360 365 Glu Ala He Gin Asp Thr He Leu Arg Ala Leu Glu Phe His Leu Gin 370 375 380 Val Asn His Pro Asp Ser Gin Tyr Leu Phe Pro Lys Leu Leu Gin Lys 385 390 395 400 Met Ala Asp Leu Arg His Val Val Thr Glu His Ala Gin Met Met Gin 405 410 415 Trp Leu Lys Lys Thr Glu Ser Glu Thr Leu Leu His Pro Leu Leu Gin 420 425 430 Glu He Tyr Lys Asp Met Tyr 435 (2) INFORMATION FOR SEQ ID NO:11: (I) SEQUENCE CHARACTERISTICS: (A) LENGTH: 2468 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA (vil) IMMEDIATE SOURCE: (B) CLONE: XR5 (XR5.SEG) (ix) FEATURE: (A) NAME/KEY: CDS (B) LOCATION: 1..1677 (xi) SEQUENCE DESCRIPTION: SEQ ID NO:11: GAA TTC CGG CGC GGA GGG GCG CGG CGC GAG GGG CCG GAG CCG GGC GGC 48 Glu Phe Arg Arg Gly Gly Ala Arg Arg Glu Gly Pro Glu Pro Gly Gly 1 5 10 15 TCA GGG GCC CAG AGA GTG CGG CGG CCG AGA GCC TGC CGG CCC CTG ACA 96 Ser Gly Ala Gin Arg Val Arg Arg Pro Arg Ala Cys Arg Pro Leu Thr 20 25 30 GCC CCC TCC CCC CGT GGA AGA CCA GGA CGA CGA CTA CGA AGG CGC AAG 144 Ala Pro Ser Pro Arg Gly Arg Pro Gly Arg Arg Leu Arg Arg Arg Lys 35 40 45 TCA TGG CGG AGC AGC GAA CGC CGA GAG GGC CCT GAG CAC CGC CGC ATG 192 Ser Trp Arg Ser Ser Glu Arg Arg Glu Gly Pro Glu His Arg Arg Met 50 55 60 GAG CGG GAC GAA CGG CCA CCT AGC GGA GGG GGA GGC GGC GGG GGC TCG 240 Glu Arg Asp Glu Arg Pro Pro Ser Gly Gly Gly Gly Gly Gly Gly Ser 65 70 75 80 GCG GGG TTC CTG GAG CCG CCC GCC GCG CTC CCT CCG CCG CCG CGC AAC 288 Ala Gly Phe Leu Glu Pro Pro Ala Ala Leu Pro Pro Pro Pro Arg Asn 85 90 95 GGT TTC TGT CAG GAT GAA TTG GCA GAG CTT GAT CCA GGC ACT AAT GGA 336 Gly Phe Cys Gin Asp Glu Leu Ala Glu Leu Asp Pro Gly Thr Asn Gly 100 105 110 GAG ACT GAC AGT TTA ACA CTT GGC CAA GGC CAT ATA CCT GTT TCC GTC 384 Glu Thr Asp Ser Leu Thr Leu Gly Gin Gly His He Pro Val Ser Val 115 120 125 CCA GAT GAT CGA GCT GAA CAA CGA ACC TGT CTC ATC TGT GGG GAC CGC 432 Pro Asp Asp Arg Ala Glu Gin Arg Thr Cys Leu He Cys Gly Asp Arg 130 135 140 GCT ACG GGC TTG CAC TAT GGG ATC ATC TCC TGC GAG GGC TGC AAG GGG 480 Ala Thr Gly Leu His Tyr Gly He He Ser Cys Glu Gly Cys Lys Gly 145 150 155 160 TTT TTC AAG AGG AGC ATT TGC AAC AAA CGG GTG TAT CGG TGC AGT CGT 528 Phe Phe Lys Arg Ser He Cys Asn Lys Arg Val Tyr Arg Cys Ser Arg 165 170 175 — -- GAC AAG AAC TGT GTC ATG TCC CGG AAG CAG AGG AAC AGA TGT CAG TAC 576 Asp Lys Asn Cys Val Met Ser Arg Lys Gin Arg Asn Arg Cys Gin Tyr 180 185 190 TGC CGC CTG CTC AAG TGT CTC CAG ATG GGC ATG AAC AGG AAG GCT ATC 624 Cys Arg Leu Leu Lys Cys Leu Gin Met Gly Met Asn Arg Lys Ala He 195 200 205 AGA GAA GAT GGC ATG CCT GGA GGC CGG AAC AAG AGC ATT GGA CCA GTC 672 Arg Glu Asp Gly Met Pro Gly Gly Arg Asn Lys Ser He Gly Pro Val 210 215 220 CAG ATA TCA GAA GAA GAA ATT GAA AGA ATC ATG TCT GGA CAG GAG TTT 720 Gin He Ser Glu Glu Glu He Glu Arg He Met Ser Gly Gin Glu Phe 225 230 235 240 GAG GAA GAA GCC AAT CAC TGG AGC AAC CAT GGT GAC AGC GAC CAC AGT 768 Glu Glu Glu Ala Asn His Trp Ser Asn His Gly Asp Ser Asp His Ser 245 250 255 TCC CCT GGG AAC AGG GCT TCA GAG AGC AAC CAG CCC TCA CCA GGC TCC 816 Ser Pro Gly Asn Arg Ala Ser Glu Ser Asn Gin Pro Ser Pro Gly Ser 260 265 270 ACA CTA TCA TCC AGT AGG TCT GTG GAA CTA AAT GGA TTC ATG GCA TTC 864 Thr Leu Ser Ser Ser Arg Ser Val Glu Leu Asn Gly Phe Met Ala Phe 275 280 285 AGG GAT CAG TAC ATG GGG ATG TCA GTG CCT CCA CAT TAT CAA TAC ATA 912 Arg Asp Gin Tyr Met Gly Met Ser Val Pro Pro His Tyr Gin Tyr He 290 295 300 CCA CAC CTT TTT AGC TAT TCT GGC CAC TCA CCA CTT TTG CCC CCA CAA 960 Pro His Leu Phe Ser Tyr Ser Gly His Ser Pro Leu Leu Pro Pro Gin 305 310 315 320 GCT CGA AGC CTG GAC CCT CAG TCC TAC AGT CTG ATT CAT CAG CTG ATG 1008 Ala Arg Ser Leu Asp Pro Gin Ser Tyr Ser Leu He His Gin Leu Met 325 330 335 TCA GCC GAA GAC CTG GAG CCA TTG GGC ACA CCT ATG TTG ATT GAA GAT 1056 Ser Ala Glu Asp Leu Glu Pro Leu Gly Thr Pro Met Leu He Glu Asp 340 345 350 GGG TAT GCT GTG ACA CAG GCA GAA CTG TTT GCT CTG CTT TGC CGC CTG 1104 Gly Tyr Ala Val Thr Gin Ala Glu Leu Phe Ala Leu Leu Cys Arg Leu 355 360 365 GCC GAC GAG TTG CTC TTT AGG CAG ATT GCC TGG ATC AAG AAG CTG CCT 1152 Ala Asp Glu Leu Leu Phe Arg Gin He Ala Trp He Lys Lys Leu Pro 370 375 380 TTC TTC TGC GAG CTC TCA ATC AAG GAT TAC ACG TGC CTC TTG AGC TCT 1200 Phe Phe Cys Glu Leu Ser He Lys Asp Tyr Thr Cys Leu Leu Ser Ser 385 390 395 400 ACG TGG CAG GAG TTA ATC CTG CTC TCC TCC CTC ACA GTG TAC AGC AAG 1248 Thr Trp Gin Glu Leu He Leu Leu Ser Ser Leu Thr Val Tyr Ser Lys 405 410 415 CAG ATC TTT GGG GAG CTG GCT GAT GTC ACA GCC AAG TAC TCA CCC TCT 1296 Gin He Phe Gly Glu Leu Ala Asp Val Thr Ala Lys Tyr Ser Pro Ser 420 425 430 GAT GAA GAA CTC CAC AGA TTT AGT GAT GAA GGG ATG GAG GTG ATT GAA 1344 Asp Glu Glu Leu His Arg Phe Ser Asp'Glu Gly Met Glu Val He Glu 435 440 445 - CGA CTC ATC TAC CTA TAT CAC AAG TTC CAT CAG CTG AAG GTC AGC AAC 1392 Are Leu He Tyr Leu Tyr His Lys Phe His Gin Leu Lys Val Ser Asn 450 455 460 GAG GAG TAC GCA TGC ATG AAA GCA ATT AAC TTC CTG AAT CAA GAT ATC 1440 Glu Glu Tyr Ala Cys Met Lys Ala He Asn Phe Leu Asn Gin Asp He 465 470 475 480 AGG GGT CTG ACC AGT GCC TCA CAG CTG GAA CAA CTG AAC AAG CGG TAT 1488 Arg Gly Leu Thr Ser Ala Ser Gin Leu Glu Gin Leu Asn Lys Arg Tyr 485 490 495 TGG TAC ATT TGT CAG GAT TTC ACT GAA TAT AAA TAC ACA CAT CAG CCA 1536 Trp Tyr He Cys Gin Asp Phe Thr Glu Tyr Lys Tyr Thr His Gin Pro 500 505 510 AAC CGC TTT CCT GAT CTT ATG ATG TGC TTG CCA GAG ATC CGA TAC ATC 1584 Asn Arg Phe Pro Asp Leu Met Met Cys Leu Pro Glu He Arg Tyr He 515 520 525 GCA GGC AAG ATG GTG AAT GTG CCC CTG GAG CAG CTG CCC CTC CTC TTT 1632 Ala Gly Lys Met Val Asn Val Pro Leu Glu Gin Leu Pro Leu Leu Phe 530 535 540 AAG GTG GTG CTG CAC TCC TGC AAG ACA AGT ACG GTG AAG GAG TGACCTGTGC 1684 Lys Val Val Leu His Ser Cys Lys Thr Ser Thr Val Lys Glu 545 550 555 CCTGCACCTC CTTGGGCCAC CCACAGTGCC TTGGGTAGGC AGCACAGGCT CCAGAGGAAA 1744 GAGCCAGAGA CCAAGATGGA GACTGTGGAG CAGCTACCTC CATCACAAGA AGAATTTGTT 1804 TGTTTGTCTG TTTTTAACCT CATTTTTCTA TATATTTATT TCACGACAGA GTTGAATGTA 1864 TGGCCTTCAA CATGATGCAC ATGCTTTTGT GTGAATGCAG CAGATGCATT TCCTTGCAGT 1924 TTACAGAATG TGAAGATGTT TAATGTTACC GTGTTGTCAT TGTTTAGAGA TAGGTTTTTT 1984 TGTATTTTGA TGGAGAGGGT AGGATGGACT AGATGAGTAT TTCCATAATG TTGACAAAGA 2044 CAACTACCTC AATGGAAACA GGTGTATGAC CATCCCTACC TTTTTCCACA TTTTCTCAGC 2104 AGATACACAC TTGTCTGTTA GAGAGCAAAC TGCCTTTTTT ATAGCCACAG ACTTCTAAGT 2164 AAAAGAAGCA AACAAAGGAG CGAAGTGGTA TAGGGAGATT TACTAATGGC CAGTTGGGAC 2224 ATCTGAGAGG CAATTTGATT TTGATCATCT CATCCCACAA GCCTGAAGGC AGAAACTCTG 2284 CCTTACCTTC TGCTGCACCC CTCCCCCCCC CCACACGCTG TTGTCTGTTG ATGCTGCTGT 2344 CAAGTTTTCA TCCAGGTAGA GTCCTAACAA TAAGCCAGTA TGTAGGACTT GCCTCCCAGC 2404 GCCCTTGTAG CTCATAGCTG CCTAGTTTGC TGTTCTAGAT CTACCAAGGC CTACTTCGGA 2464 ATTC 2468 (2) INFORMATION FOR SEQ ID NO:12: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 558 amino acids (B) TYPE: amino acid (D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (xi) SEQUENCE DESCRIPTION: SEQ ID NO:12: Glu Phe Arg Arg Gly Gly Ala Arg Arg Glu Gly Pro Glu Pro Gly Gly 1 5 10 15 ■ Ser Gly Ala Gin Arg Val Arg Arg Pro Arg Ala Cys Arg Pro Leu Thr 20 25 30 Ala Pro Ser Pro Arg Gly Arg Pro Gly Arg Arg Leu Arg Arg Arg Lys 35 40 45 Ser Trp Arg Ser Ser Glu Arg Arg Glu Gly Pro Glu His Arg Arg Met 50 55 60 Glu Arg Asp Glu Arg Pro Pro Ser Gly Gly Gly Gly Gly Gly Gly Ser 65 70 75 80 Ala Gly Phe Leu Glu Pro Pro Ala Ala Leu Pro Pro Pro Pro Arg Asn 85 90 95 Gly Phe Cys Gin Asp Glu Leu Ala Glu Leu Asp Pro Gly Thr Asn Gly 100 105 110 Glu Thr Asp Ser Leu Thr Leu Gly Gin Gly His He Pro Val Ser Val 115 120 125 Pro Asp Asp Arg Ala Glu Gin Arg Thr Cys Leu He Cys Gly Asp Arg 130 135 140 Ala Thr Gly Leu His Tyr Gly He He Ser Cys Glu Gly Cys Lys Gly 145 150 155 160 Phe Phe Lys Arg Ser He Cys Asn Lys Arg Val Tyr Arg Cys Ser Arg 165 170 175 Asp Lys Asn Cys Val Met Ser Arg Lys Gin Arg Asn Arg Cys Gin Tyr 180 185 190 Cys Arg Leu Leu Lys Cys Leu Gin Met Gly Met Asn Arg Lys Ala He 195 200 205 Arg Glu Asp Gly Met Pro Gly Gly Arg Asn Lys Ser He Gly Pro Val 210 215 220 Gin He Ser Glu Glu Glu He Glu Arg He Met Ser Gly Gin Glu Phe 225 230 235 240 Glu Glu Glu Ala Asn His Trp Ser Asn His Gly Asp Ser Asp His Ser 245 250 255 Ser Pro Gly Asn Arg Ala Ser Glu Ser Asn Gin Pro Ser Pro Gly Ser 260 265 270 Thr Leu Ser Ser Ser Arg Ser Val Glu Leu Asn Gly Phe Met Ala Phe 275 280 285 Arg Asp Gin Tyr Met Gly Met Ser Val Pro Pro His Tyr Gin Tyr He 290 295 300 WO93/06215 _--_ PCT/US92/07570 Pro His Leu Phe Ser Tyr Ser Gly His Ser Pro Leu Leu Pro Pro Gin 305 310 315 320 Ala Arg Ser Leu Asp Pro Gin Ser Tyr Ser Leu He His Gin Leu Met 325 330 335 Ser Ala Glu Asp Leu Glu Pro Leu Gly Thr Pro Met Leu He Glu Asp 340 345 350 Gly Tyr Ala Val Thr Gin Ala Glu Leu Phe Ala Leu Leu Cys Arg Leu 355 360 365 Ala Asp Glu Leu Leu Phe Arg Gin He Ala Trp He Lys Lys Leu Pro 370 375 380 Phe Phe Cys Glu Leu Ser He Lys Asp Tyr Thr Cys Leu Leu Ser Ser 385 390 395 400 Thr Trp Gin Glu Leu He Leu Leu Ser Ser Leu Thr Val Tyr Ser Lys 405 410 415 Gin He Phe Gly Glu Leu Ala Asp Val Thr Ala Lys Tyr Ser Pro Ser 420 425 430 Asp Glu Glu Leu His Arg Phe Ser Asp Glu Gly Met Glu Val He Glu 435 440 445 Arg Leu He Tyr Leu Tyr His Lys Phe His Gin Leu Lys Val Ser Asn 450 455 460 Glu Glu Tyr Ala Cys Met Lys Ala He Asn Phe Leu Asn Gin Asp He 465 470 475 480 Arg Gly Leu Thr Ser Ala Ser Gin Leu Glu Gin Leu Asn Lys Arg Tyr 485 490 495 Trp Tyr He Cys Gin Asp Phe Thr Glu Tyr Lys Tyr Thr His Gin Pro 500 505 510 Asn Arg Phe Pro Asp Leu Met Met Cys Leu Pro Glu He Arg Tyr He 515 520 525 Ala Gly Lys Met Val Asn Val Pro Leu Glu Gin Leu Pro Leu Leu Phe 530 535 540 Lys Val Val Leu His Ser Cys Lys Thr Ser Thr Val Lys Glu 545 550 555 WO 93/06215 _-.,_ PCT/US92/07570 (2 ) INFORMATION FOR SEQ ID NO : 13 : ( i) SEQUENCE CHARACTERISTICS : (A) LENGTH : 2315 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS : single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA (vii) IMMEDIATE SOURCE: (B) CLONE: XR79 (XR79.SEQ) (ix) FEATURE: (A) NAME KEY: CDS (B) LOCATION: 204..2009 (xi) SEQUENCE DESCRIPTION: SEQ ID NO:13: GCGTTAGAAA AGGTTCAAAA TAGGCACAAA GTCGTGAAAA TATCGTAACT GACCGGAAGT 60 AACATAACTT TAACCAAGTG CCTCGAAAAA TAGATGTTTT TAAAAGCTCA AGAΛTGGTGA 120 TAACAGACGT CCAATAAGAA TTTTCAAAGA GCCAATTATT TATACAGCCG ACGACTATTT 180 TTTAGCCGCC TGCTGTGGCG ACA ATG GAC GGC GTT AAG GTT GAG ACG TTC 230 Met Asp Gly Val Lys Val Glu Thr Phe 1 5 ATC AAA AGC GAA GAA AAC CGA GCG ATG CCC TTG ATC GGA GGA GGC AGT 278 He Lys Ser Glu Glu Asn Arg Ala Met Pro Leu He Gly Gly Gly Ser 10 15 20 25 GCC TCA GGC GGC ACT CCT CTG CCA GGA GGC GGC GTG GGA ATG GGA GCC 326 Ala Ser Gly Gly Thr Pro Leu Pro Gly Gly Gly Val Gly Met Gly Ala 30 35 40 GGA GCA TCC GCA ACG TTG AGC GTG GAG CTG TGT TTG GTG TGC GGG GAC 374 Gly Ala Ser Ala Thr Leu Ser Val Glu Leu Cys Leu Val Cys Gly Asp 45 50 55 CGC GCC TCC GGG CGG CAC TAC GGA GCC ATA AGC TGC GAA GGC TGC AAG 422 Arg Ala Ser Gly Arg His Tyr Gly Ala He Ser Cys Glu Gly Cys Lys 60 65 70 GGA TTC TTC AAG CGC TCG ATC CGG AAG CAG CTG GGC TAC CAG TGT CGC 470 Gly Phe Phe Lys Arg Ser He Arg Lys Gin Leu Gly Tyr Gin Cys Arg 75 80 85 GGG GCT ATG AAC TGC GAG GTC ACC AAG CAC CAC AGG AAT CGG TGC CAG 518 Gly Ala Met Asn Cys Glu Val Thr Lys His His Arg Asn Arg Cys Gin 90 95 100 105 TTC TGT CGA CTA CAG AAG TGC CTG GCC AGC GGC ATG CGA AGT GAT TCT 566 Phe Cys Arg Leu Gin Lys Cys Leu Ala Ser Gly Met Arg Ser Asp Ser 110 115 120 GTG CAG CAC GAG AGG AAA CCG ATT GTG GAC AGG AAG GAG GGG ATC ATC 614 Val Gin His Glu Arg Lys Pro He Val Asp Arg Lys Glu Gly He He 125 130 135 GCT GCT GCC GGT AGC TCA TCC ACT TCT GGC GGC GGT AAT GGC TCG TCC 662 Ala Ala Ala Gly Ser Ser Ser Thr Ser Gly Gly Gly Asn Gly Ser Ser 140 145 150 ACC TAC CTA TCC GGC AAG TCC GGC TAT CAG CAG GGG CGT GGC AAG GGG 710 Thr Tyr Leu Ser Gly Lys Ser Gly Tyr Gin Gin Gly Arg Gly Lys Gly 155 160 165 CAC AGT GTA AAG GCC GAA TCC GCG CCA CGC CTC CAG TGC ACA GCG CGC 758 His Ser Val Lys Ala Glu Ser Ala Pro Arg Leu Gin Cys Thr Ala Arg 170 175 180 185 CAG CAA CGG GCC TTC AAT TTG AAT GCA GAA TAT ATT CCG ATG GGT TTG 806 Gin Gin Arg Ala Phe Asn Leu Asn Ala Glu Tyr He Pro Met Gly Leu 190 195 200 AAT TTC GCA GAA CTA ACG CAG ACA TTG ATG TTC GCT ACC CAA CAG CAG 854 Asn Phe Ala Glu Leu Thr Gin Thr Leu Met Phe Ala Thr Gin Gin Gin 205 210 215 CAG CAA CAA CAG CAA CAG CAT CAA CAG AGT GGT AGC TAT TCG CCA GAT 902 Gin Gin Gin Gin Gin Gin His Gin Gin Ser Gly Ser Tyr Ser Pro Asp 220 225 230 ATT CCG AAG GCA GAT CCC GAG GAT GAC GAG GAC GAC TCA ATG GAC AAC 950 He Pro Lys Ala Asp Pro Glu Asp Asp Glu Asp Asp Ser Met Asp Asn 235 240 245 AGC AGC ACG CTG TGC TTG CAG TTG CTC GCC AAC AGC GCC AGC AAC AAC 998 Ser Ser Thr Leu Cys Leu Gin Leu Leu Ala Asn Ser Ala Ser Asn Asn 250 255 260 265 AAC TCG CAG CAC CTG AAC TTT AAT GCT GGG GAA GTA CCC ACC GCT CTG 1046 Asn Ser Gin His Leu Asn Phe Asn Ala Gly Glu Val Pro Thr Ala Leu 270 275 280 CCT ACC ACC TCG ACA ATG GGG CTT ATT CAG AGT TCG CTG GAC ATG CGG 1094 Pro Thr Thr Ser Thr Met Gly Leu He Gin Ser Ser Leu Asp Met Arg 285 290 295 GTC ATC CAC AAG GGA CTG CAG ATC CTG CAG CCC ATC CAA AAC CAA CTG 1142 Val He His Lys Gly Leu Gin He Leu Gin Pro He Gin Asn Gin Leu 300 305 310 GAG CGA AAT GGT AAT CTG AGT GTG AAG CCC GAG TGC GAT TCA GAG GCG 1190 Glu Arg Asn Gly Asn Leu Ser Val Lys Pro Glu Cys Asp Ser Glu Ala 315 320 325 GAG GAC AGT GGC ACC GAG GAT GCC GTA GAC GCG GAG CTG GAG CAC ATG 1238 Glu Asp Ser Gly Thr Glu Asp Ala Val Asp Ala Glu Leu Glu His Met 330 335 340 345 GAA CTA GAC TTT GAG TGC GGT GGG AAC CGA AGC GGT GGA AGC GAT TTT 1286 Glu Leu Asp Phe Glu Cys Gly Gly Asn Arg Ser Gly Gly Ser Asp Phe . 350 355 360 GCT ATC AAT GAG GCG GTC TTT GAA CAG GAT CTT CTC ACC GAT GTG CAG 1334 Ala He Asn Glu Ala Val Phe Glu Gin Asp Leu Leu Thr Asp Val Gin 365 370 375 TGT GCC TTT CAT GTG CAA CCG CCG ACT TTG GTC CAC TCG TAT TTA AAT 1382 Cys Ala Phe His Val Gin Pro Pro Thr Leu Val His Ser Tyr Leu Asn 380 385 390 ATT CAT TAT GTG TGT GAG ACG GGC TCG CGA ATC ATT TTT CTC ACC ATC 1430 He His Tyr Val Cys Glu Thr Gly Ser Arg He He Phe Leu Thr He 395 400 405 CAT ACC CTT CGA AAG GTT CCA GTT TTC GAA CAA TTG GAA GCC CAT ACA 1478 His Thr Leu Arg Lys Val Pro Val Phe Glu Gin Leu Glu Ala His Thr 410 415 420 425 CAG GTG AAA CTC CTG AGA GGA GTG TGG CCA GCA TTΛ ATG GCT ATA GCT 1526 Gin Val Lys Leu Leu Arg Gly Val Trp Pro Ala Leu Met Ala He Ala 430 435 440 TTG GCG CAG TGT CAG GGT CAG CTT TCG GTG CCC ACC ATI' ATC GGG CAG 1574 Leu Ala Gin Cys Gin Gly Gin Leu Ser Val Pro Thr He He Gly Gin 445 450 455 TTT ATT CAA AGC ACT CGC CAG CTA GCG GAT ATC GAT AAG ATC GAA CCG 1622 Phe He Gin Ser Thr Arg Gin Leu Ala Asp He Asp Lys He Glu Pro 460 465. 470 TTG AAG ATC TCG AAG ATG GCA AAT CTC ACC AGG ACC CTG CAC GAC TTT 1670 Leu Lys He Ser Lys Met Ala Asn Leu Thr Arg Thr Leu His Asp Phe 475 480 485 GTC CAG GAG CTC CAG TCA CTG GAT GTT ACT GAT ATG GAG TTT GGC TTG 1718 Val Gin Glu Leu Gin Ser Leu Asp Val Thr Asp Met Glu Phe Gly Leu 490 495 500 505 CTG CGT CTG ATC TTG CTC TTC AAT CCA ACG CTC TTC CAG CAT CGC AAG 1766 Leu Arg Leu He Leu Leu Phe Asn Pro Thr Leu Phe Gin His Arg Lys 510 515 520 GAG CGG TCG TTG CGA GGC TAC GTC CGC AGA GTC CAA CTC TAC GCT CTG 1814 Glu Arg Ser Leu Arg Gly Tyr Val Arg Arg Val Gin Leu Tyr Ala Leu 525 530 535 TCA AGT TTG AGA AGG CAG GGT GGC ATC GGC GGC GGC GAG GAG CGC TTT 1862 Ser Ser Leu Arg Arg Gin Gly Gly He Gly Gly Gly Glu Glu Arg Phe 540 545 550 AAT GTT CTG GTG GCT CGC CTT CTT CCG CTC AGC AGC CTG GAC GCA GAG 1910 Asn Val Leu Val Ala Arg Leu Leu Pro Leu Ser Ser Leu Asp Ala Glu 555 560 565 GCC ATG GAG GAG CTG TTC TTC GCC AAC TTG GTG GGG CAG ATG CAG ATG 1958 Ala Met Glu Glu Leu Phe Phe Ala Asn Leu Val Gly Gin Met Gin Met 570 575 580 585 GAT GCT CTT ATT CCG TTC ATA CTG ATG ACC AGC AAC ACC AGT GGA CTG 2006 Asp Ala Leu He Pro Phe He Leu Met Thr Ser Asn Thr Ser Gly Leu 590 595 600 TAGGCGGAAT TGAGAAGAAC AGGGCGCAAG CAGATTCGCT AGACTGCCCA AAAGCAAGAC 2066 TGAAGATGGA CCAAGTGCGG GCAATACATG TAGCAACTAG GCAAATCCCA TTAATTATAT 2126 ATTTAATATA TACAATATAT AGTTTAGGAT ACAATATTCT AACATAAAAC CATGAGTTTA 2186 TTGTTGTTCA CAGATAAAAT GGAATCGATT TCCCAATAAA AGCGAATATG TTTTTAAACA 2246 GAATGTTTGC ATCAGAACTT TGAGATGTAT ACATTAGATT ATTACAACAC AAAAAAAAAA 2306 AAAAAAAAA 2315 WO93/06215 .,,. PCT/US92/07570. (2) INFORMATION FOR SEQ ID NO:14: (I) SEQUENCE CHARACTERISTICS: (A) LENGTH: 601 amino acids (B) TYPE: amino acid (D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (xl) SEQUENCE DESCRIPTION: SEQ ID NO:14: Met Asp Gly Val Lys Val Glu Thr Phe He Lys Ser Glu Glu Asn Arg 1 5 10 15 Ala Met Pro Leu He Gly Gly Gly Ser Ala Ser Gly Gly Thr Pro Leu 20 25 30 Pro Gly Gly Gly Val Gly Met Gly Ala Gly Ala Ser Ala Thr Leu Ser 35 40 45 Val Glu Leu Cys Leu Val Cys Gly Asp Arg Ala Ser Gly Arg His Tyr 50 55 60 Gly Ala He Ser Cys Glu Gly Cys LYS Gly Phe Phe Lys Arg Ser He 65 70 75 80 Arg Lys Gin Leu Gly Tyr Gin Cys Arg Gly Ala Met Asn Cys Glu Val 85 90 95 Thr Lys His His Arg Asn Arg Cys Gin Phe Cys Arg Leu Gin Lys Cys 100 105 110 Leu Ala Ser Gly Met Arg Ser Asp Ser Val Gin His Glu Arg Lys Pro 115 120 125 He Val Asp Arg Lys Glu Gly He He Ala Ala Ala Gly Ser Ser Ser 130 135 140 Thr Ser Gly Gly Gly Asn Gly Ser Ser Thr Tyr Leu Ser Gly Lys Ser 145 150 155 160 Gly Tyr Gin Gin Gly Arg Gly Lys Gly His Ser Val Lys Ala Glu Ser 165 170 175 Ala Pro Arg Leu Gin Cys Thr Ala Arg Gin Gin Arg Ala Phe Asn Leu 180 185 190 Asn Ala Glu Tyr He Pro Met Gly Leu Asn Phe Ala Glu Leu Thr Gin 195 200 205 Thr Leu Met Phe Ala Thr Gin Gin Gin Gin Gin Gin Gin Gin Gin His 210 215 220 Gin Gin Ser Gly Ser Tyr Ser Pro Asp He Pro Lys Ala Asp Pro Glu 225 230 235 240 Asp Asp Glu Asp Asp Ser Met Asp Asn Ser Ser Thr Leu Cys Leu Gin 245 250 255 Leu Leu Ala Asn Ser Ala Ser Asn Asn Asn Ser Gin His Leu Asn Phe 260 265 270 Asn Ala Gly Glu Val Pro Thr Ala Leu Pro Thr Thr Ser Thr Met Gly 275 280 285 Leu He Gin Ser Ser Leu Asp Met Arg Val He His Lys Gly Leu Gin 290 295 300 He Leu Gin Pro He Gin Asn Gin Leu Glu Arg Asn Gly Asn Leu Ser 305 310 315 320 Val Lys Pro Glu Cys Asp Ser Glu Ala Glu Asp Ser Gly Thr Glu Asp 325 330 335 Ala Val Asp Ala Glu Leu Glu His Met Glu Leu Asp Phe Glu Cys Gly 340 345 350 Gly Asn Arg Ser Gly Gly Ser Asp Phe Ala He Asn Glu Ala Val Phe 355 360 365 Glu Gin Asp Leu Leu Thr Asp Val Gin Cys Ala Phe His Val Gin Pro 370 375 380 Pro Thr Leu Val His Ser Tyr Leu Asn He His Tyr Val Cys Glu Thr 385 390 395 400 Gly Ser Arg He He Phe Leu Thr He His Thr Leu Arg Lys Val Pro 405 410 415 Val Phe Glu Gin Leu Glu Ala His Thr Gin Val Lys Leu Leu Arg Gly 420 425 430 Val Trp Pro Ala Leu Met Ala He Ala Leu Ala Gin Cys Gin Gly Gin 435 440 445 Leu Ser Val Pro Thr He He Gly Gin Phe He Gin Ser Thr Arg Gin 450 455 460 Leu Ala Asp He Asp Lys He Glu Pro Leu Lys He Ser Lys Met Ala 465 470 475 480 Asn Leu Thr Arg Thr Leu His Asp Phe Val Gin Glu Leu Gin Ser Leu 485 490 495 Asp Val Thr Asp Met Glu Phe Gly Leu Leu Arg Leu He Leu Leu Phe 500 505 510 Asn Pro Thr Leu Phe Gin His Arg Lys Glu Arg Ser Leu Arg Gly Tyr 515 520 525 Val Arg Arg Val Gin Leu Tyr Ala Leu Ser Ser Leu Arg Arg Gin Gly 530 535 540 Gly He Gly Gly Gly Glu Glu Arg Phe Asn Val Leu Val Ala Arg Leu 545 550 555 560 Leu Fro Leu Ser Ser Leu Asp Ala Glu Ala Met Glu Glu Leu Phe Phe 565 570 575 Ala Asn Leu Val Gly Gin Met Gin Met Asp Ala Leu He Pro Phe He 580 585 590 Leu Met Thr Ser Asn Thr Ser Gly Leu 595 600

Claims: That which is claimed is: 1. DNA encoding a polypeptide characterized by having a DNA binding domain comprising about 66 amino acids with 9 Cys residues, wherein said DNA binding domain has: (i) less than about 70% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) less than about 60% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) less than about 50% amino acid sequence identity with the DNA binding domain of hGR; and (iv) less than about 65% amino acid sequence identity with the DNA binding domain of hRXR-alpha. 2. DNA according to Claim 1 wherein the ligand binding domain of said polypeptide has: (i) less than about 35% amino acid sequence identity with the ligand binding domain of hRAR-alpha; (ii) less than about 30% amino acid sequence identity with the ligand binding domain of hTR-beta; (iii) less than about 25% amino acid sequence identity with the ligand binding domain of hGR; and (iv) less than about 30% amino acid sequence identity with the ligand binding domain of hRXR-alpha. 3. DNA according to Claim 1 wherein said polypeptide has an overall amino acid sequence identity of: (i) lesε than about 35% relative to hRAR- alpha; (ii) less than about 35% relative to hTR- beta; (iii) less than about 25% relative to hGR; and (iv) lesε than about 35% relative to hRXR- alpha. 4. DNA according to Claim 1 wherein said polypeptide is characterized by having a DNA binding domain comprising [XRl] : (i) about 68% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) about 59% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) about 45% amino acid sequence identity with the DNA binding domain of hGR; and (iv) about 65% amino acid sequence identity with the DNA binding domain of hRXR-alpha. 5. DNA according to Claim 1 wherein said polypeptide is characterized by having a DNA binding domain comprising [XR2]: (i) about 55% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) about 56% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) about 50% amino acid sequence identity with the DNA binding domain of hGR; and (iv) about 52% amino acid sequence identity with the DNA binding domain of hRXR-alpha. 6. DNA according to Claim 1 wherein said polypeptide is characterized by having a DNA binding domain comprising [XR4]: (i) about 62% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) about 58% amino acid sequence identity with the DNA" binding domain of hTR-beta; (iii) about 48% amino acid sequence identity with the DNA binding domain of hGR; and (iv) about 62% amino acid sequence identity with the DNA binding domain of hRXR-alpha. 7. DNA according to Claim 1 wherein said polypeptide is characterized by having a DNA binding domain comprising [XR5] : (i) about 59% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) about 52% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) about 44% amino acid sequence identity with the DNA binding domain of hGR; and (iv) about 61% amino acid sequence identity with the DNA binding domain of hRXR-alpha. 8. DNA according to Claim 1 wherein said polypeptide is characterized by having a DNA binding domain comprising [XR79]: (i) about 59% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) about 55% amino acid sequence identity with the DNA binding domain of hTR-beta; (iϋ) about 50% amino acid sequence identity with the DNA binding domain of hGR; and (iv) about 65% amino acid sequence identity with the DNA binding domain of hRXR-alpha. 9. DNA according to Claim 1 wherein the nucleotide sequence of said DNA is selected from the nucleotide sequence set forth in Sequence ID No. 1, the combination of Sequence ID No. 3 and the continuation thereof as set forth in Sequence ID No. 1, the combination of Sequence ID No. 5 and the continuation thereof as set forth in Sequence ID No. 1, Sequence ID No. 7, Sequence ID No. 9, Sequence ID No. 11, or Sequence ID No. 13. 10. An expression vector comprising DNA according to claim l, and further comprising: at the 5'-end of said DNA, a promoter and a triplet encoding a translational start codon, and at the 3'-end of said DNA, a triplet encoding a translational stop codon; wherein said expression vector is operative in an animal cell in culture to expresε the protein encoded by the continuouε sequence of amino acid-encoding triplets. 11. An animal cell in culture transformed with an expression vector according to Claim 10. 12. A method of making a polypeptide comprising culturing the cells of Claim 11 under conditions suitable for the expression of said polypeptide. 13. The polypeptide produced by the method of Claim 12. 14. A polypeptide characterized by having a DNA binding domain comprising about 66 amino acids with 9 Cys residues, wherein said DNA binding domain has: (i) less than about 70% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) less than about 60% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) less than about 50% amino acid sequence identity with the DNA binding domain of hGR; and (iv) less than about 65% amino acid sequence identity with the DNA binding domain of hRXR-alpha. 15. A DNA or RNA labeled for detection; wherein said DNA or RNA comprises a nucleic acid segment of at -least 20 bases in length, wherein said segment has substantially the same sequence as a segment of the same length selected from the DNA segment represented by bases 21 -1902, inclusive, of Sequence ID No. 1, bases 1 - 386, inclusive, of Sequence ID No. 3, baseε 10 - 300, inclusive, of Sequence ID No. 5, bases 21 - 1615, inclusive, of Sequence ID No. 7, bases 21 - 2000, inclusive, of Sequence ID No. 9, bases 1 - 2450, inclusive, of Sequence ID No. 11, bases 21 - 2295, inclusive, of Sequence ID No. 13, or the complement of any one of said segments. 16. A method of testing a compound for its ability to regulate transcription-activating effects of a receptor polypeptide, said method comprising assaying for the presence or absence of reporter protein upon contacting of cells containing a receptor polypeptide and reporter vector with said compound; wherein said receptor polypeptide is characterized by having a DNA binding domain comprising about 66 amino acids with 9 Cys residues, wherein said DNA binding domain has: (i) less than about 70% amino acid sequence identity with the DNA binding domain of hRAR-alpha; (ii) less than about 60% amino acid sequence identity with the DNA binding domain of hTR-beta; (iii) less than about 50% amino acid sequence identity with the DNA binding domain of hGR; and (iv) lesε than about 65% amino acid sequence identity with the DNA binding domain of hRXR-alpha; and wherein said reporter vector comprises: (a) a promoter that is operable in said cell, (b) a hormone response element, and (c) a DNA segment encoding a reporter protein, wherein said reporter protein-encoding DNA segment iε operatively linked to said promoter for transcription of said DNA segment, and wherein said hormone response element is operatively linked to said promoter for activation thereof. 17. A chimeric receptor comprising at least an amino-terminal domain, a DNA-binding domain, and a ligand-binding domain, wherein at least one of the domains thereof is derived from the polypeptide of Claim 13; and wherein at least one of the domains thereof is derived from at least one previously identified member of the steroid/thyroid superfamily of receptors. 18. DNA encoding the chimeric receptor of Claim 17. 19. A method to identify compounds which act as ligands for receptor polypeptides according to Claim 13 comprising: assaying for the presence or absence of reporter protein upon contacting of cells containing a chimeric form of said receptor polypeptide and reporter vector with said compound; wherein said chimeric form of said receptor polypeptide comprises the ligand binding domain of said receptor polypeptide and the amino-terminal and DNA-binding domains of at least one previously identified member of the steroid/thyroid superfamily of receptors; wherein said reporter vector comprises: (a) a promoter that is operable in said cell, (b) a hormone response element which is responsive to the receptor from which the DNA-binding domain of said chimeric form of said receptor polypeptide is derived, and (c) a DNA segment encoding a reporter protein. wherein said reporter protein- encoding DNA segment is operatively linked to said promoter for transcription of εaid DNA segment, and wherein said hormone response element is operatively linked to said promoter for activation thereof, and thereafter selecting those compounds which induce or block the production of reporter in the presence of said chimeric form of said receptor polypeptide. 20. A method to identify response elements for receptor polypeptides according to Claim 13 comprising: assaying for the presence or absence of reporter protein upon contacting of cells containing a chimeric form of said receptor polypeptide and reporter vector with a compound which is a known agonist or antagonist for the receptor from which the ligand-binding domain of said chimeric form of said receptor polypeptide is derived; wherein εaid chimeric form of εaid receptor polypeptide comprises the DNA-binding domain of the receptor polypeptide and the amino-terminal and ligand-binding domains of at least one previously identified member of the steroid/thyroid superfamily of receptors; wherein said reporter vector comprises: (a) a promoter that is operable in said cell, (b) a putative hormone response element, and (c) a DNA segment encoding a reporter protein, wherein said reporter protein- encoding DNA segment is operatively linked to said promoter for transcription of said DNA segment, and wherein said hormone response element is operatively linked to said promoter for activation thereof; and identifying those response elements for which the production of reporter is induced or blocked in the presence of said chimeric form of said receptor polypeptide. 21. A method of testing a compound for its ability to selectively regulate transcription-activating effects of a specific receptor polypeptide, said method comprising: assaying for the presence or absence of reporter protein upon contacting of cells containing said receptor polypeptide and reporter vector with said compound; wherein said receptor polypeptide is characterized by being responsive to the presence of a known ligand for said receptor to regulate the transcription of associated gene(s) ; wherein said reporter vector comprises: (a) a promoter that is operable in said cell, (b) a hormone response element, and (c) a DNA segment encoding a reporter protein, wherein said reporter protein- encoding DNA segment is operatively linked to said promoter for transcription of said DNA segment, and wherein said hormone response element is operatively linked to said promoter for activation thereof; and asεaying for the preεence or abεence of reporter protein upon contacting of cellε containing chimeric receptor polypeptide and reporter vector with said compound; wherein said chimeric receptor polypeptide comprises the ligand binding domain of the receptor of Claim 13 and the DNA binding domain of said specific receptor; and thereafter selecting those compounds which induce or block the production of reporter in the presence of said specific receptor, but are substantially unable to induce or block the production of reporter in the presence of said chimeric receptor. 22. A method according to Claim 21 wherein said contacting is carried out in the further presence of at least one agonist for said specific receptor.

Inventors: BORGMEYER UWE K, EVANS RONALD M, GIGUERE VINCENT, MANGELSDORF DAVID J, ONG ESTELITA S, ORO ANTHONY E, YAO TSO-PANG, BORGMEYER, UWE, K., EVANS, RONALD, M., GIGUERE, VINCENT, MANGELSDORF, DAVID, J., ONG, ESTELITA, S., ORO, ANTHONY, E., YAO, TSO-PANG
Applicants: SALK INST FOR BIOLOGICAL STUDI, THE SALK INSTITUTE FOR BIOLOGICAL STUDIES
Application year: 1992
Main classification: C07K13
IPC codes: C07K14, C12N15, C12Q1