Novel ITALY, LOR-2, STRIFE, TRASH, BDSF, LRSG, and STMST polypeptides, proteins, and nucleic acid molecules are disclosed. In addition to isolated, full-length ITALY, LOR-2, STRIFE, TRASH, BDSF, LRSG, and STMST proteins, the invention further provides isolated ITALY, LOR-2, STRIFE, TRASH, BDSF, LRSG, and STMST fusion proteins, antigenic peptides and anti-ITALY, LOR-2, STRIFE, TRASH, BDSF, LRSG, and STMST antibodies. The invention also provides ITALY, LOR-2, STRIFE, TRASH, BDSF, LRSG, and STMST nucleic acid molecules, recombinant expression vectors containing a nucleic acid molecule of the invention, host cells into which the expression vectors have been introduced and non-human transgenic animals in which an ITALY, LOR-2, STRIFE, TRASH, BDSF, LRSG, and STMST gene has been introduced or disrupted. Diagnostic, screening and therapeutic methods utilizing compositions of the invention are also provided.