Patent ID: 7393660

Claim:
A composition of matter comprising: a) an isolated polypeptide comprising: i) SEQ ID NO: 4; ii) SEQ ID NO: 6; or iii) a fusion protein comprising SEQ ID NO: 4 or SEQ ID NO: 6 fused to a heterologous sequence selected from: an extracellular domain of a membrane-bound protein, an immunoglobulin constant region, a multimerization domain, a heterodimeric protein hormone, a signal peptide, an export signal, or a tag sequence; b) an isolated polynucleotide: A) encoding a polypeptide, said polypeptide comprising: i) SEQ ID NO: 4; ii) SEQ ID NO: 6; or iii) a fusion protein comprising SEQ ID NO: 4 or SEQ ID NO: 6 fused to a heterologous sequence selected from: an extracellular domain of a membrane-bound protein, an immunoglobulin constant region, a multimerization domain, a heterodimeric protein hormone, a signal peptide, an export signal, or a tag sequence; B) comprising SEQ ID NO: 3; or C) comprising SEQ ID NO: 5; c) a vector comprising a polynucleotide: A) encoding a polypeptide comprising: i) SEQ ID NO: 4; ii) SEQ ID NO: 6; or iii) a fusion protein comprising SEQ ID NO: 4 or SEQ ID NO: 6 fused to a heterologous sequence selected from: an extracellular domain of a membrane-bound protein, an immunoglobulin constant region, a multimerization domain, a heterodimeric protein hormone, a signal peptide, an export signal, or a tag sequence; B) comprising SEQ ID NO: 3; or C) comprising SEQ ID NO: 5; or d) an isolated host cell transformed or transfected with an expression vector comprising a polynucleotide: A) encoding a polypeptide comprising: i) SEQ ID NO: 4; ii) SEQ ID NO: 6; or iii) a fusion protein comprising SEQ ID NO: 4 or SEQ ID NO: 6 fused to a heterologous sequence selected from: an extracellular domain of a membrane-bound protein, an immunoglobulin constant region, a multimerization domain, a heterodimeric protein hormone, a signal peptide, an export signal, or a tag sequence; B) comprising SEQ ID NO: 3; or C) comprising SEQ ID NO: 5.