This gene encodes a member of the IAP family of proteins that inhibit apoptosis by binding to tumor necrosis factor receptor-associated factors TRAF1 and TRAF2, probably by interfering with activation of ICE-like proteases.The encoded protein inhibits apoptosis induced by serum deprivation but does not affect apoptosis resulting from exposure to menadione,a potent inducer of free radicals.It contains 3 baculovirus IAP repeats and a ring finger domain.Transcript variants encoding the same isoform have been identified.[provided by RefSeq,Aug 2011]