The invention provides isolated nucleic acids molecules, designated 27877, 18080, 14081, 32140, 50352, 16658, 14223, 16002, 50566, 65552 and 65577 nucleic acid molecules. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing 27877, 18080, 14081, 32140, 50352, 16658, 14223, 16002, 50566, 65552 and 65577 nucleic acid molecules, host cells into which the expression vectors have been introduced, and nonhuman transgenic animals in which a 27877, 18080, 14081, 32140, 50352, 16658, 14223, 16002, 50566, 65552 or 65577 gene has been introduced or disrupted. The invention still further provides isolated 27877, 18080, 14081, 32140, 50352, 16658, 14223, 16002, 50566, 65552 or 65577 proteins, fusion proteins, antigenic peptides and anti-27877, 18080, 14081, 32140, 50352, 16658, 14223, 16002, 50566, 65552 or 65577 antibodies. Diagnostic and therapeutic methods utilizing compositions of the invention are also provided.