The invention provides isolated nucleic acids molecules, designated 13237, 18480, 2245, 16228, 7677, 26320, 46619, 33166, 16836, 46867, 21617, 55562, 39228, 62088, 46745, 23155, 21657, 42755, 32229, 22325, 46863 and 32252 nucleic acid molecules. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing 13237, 18480, 2245, 16228, 7677, 26320, 46619, 33166, 16836, 46867, 21617, 55562, 39228, 62088, 46745, 23155, 21657, 42755, 32229, 22325, 46863 and 32252 nucleic acid molecules, host cells into which the expression vectors have been introduced, and nonhuman transgenic animals in which a 13237, 18480, 2245, 16228, 7677, 26320, 46619, 33166, 16836, 46867, 21617, 55562, 39228, 62088, 46745, 23155, 21657, 42755, 32229, 22325, 46863 or 32252 gene has been introduced or disrupted. The invention still further provides isolated 13237, 18480, 2245, 16228, 7677, 26320, 46619, 33166, 16836, 46867, 21617, 55562, 39228, 62088, 46745, 23155, 21657, 42755, 32229, 22325, 46863 or 32252 proteins, fusion proteins, antigenic peptides and anti-13237, 18480, 2245, 16228, 7677, 26320, 46619, 33166, 16836, 46867, 21617, 55562, 39228, 62088, 46745, 23155, 21657, 42755, 32229, 22325, 46863 or 32252 antibodies. Diagnostic and therapeutic methods utilizing compositions of the invention are also provided.