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FLIP (CFLAR) is an apoptosis regulator protein which functions as a crucial link between cell survival and cell death pathways in mammalian cells. It acts as an inhibitor of TNFRSF6 mediated apoptosis. A proteolytic fragment (p43) is likely retained in the death-inducing signaling complex (DISC) thereby blocking further recruitment and processing of caspase-8 at the complex. Full length and shorter isoforms have been shown either to induce apoptosis or to reduce TNFRSF-triggered apoptosis. Lacks enzymatic (caspase) activity.
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Protein Aliases: c-FLIP; CASH; CASP8 and FADD-like apoptosis regulator; CASP8 and FADD-like apoptosis regulator subunit p12; CASP8 and FADD-like apoptosis regulator subunit p43; Caspase homolog; Caspase-eight-related protein; Caspase-like apoptosis regulatory protein; caspase-related inducer of apoptosis; Casper; Cellular FLICE-like inhibitory protein; CLARP; FADD-like antiapoptotic molecule 1; FLAME-1; I-FLICE; Inhibitor of FLICE; MACH-related inducer of toxicity; MRIT; testis secretory sperm-binding protein Li 233m; Usurpin; usurpin beta
Gene Aliases: c-FLIP; c-FLIPL; c-FLIPR; c-FLIPS; CASH; CASP8AP1; Casper; CFLAR; CLARP; FLAME; FLAME-1; FLAME1; FLIP; I-FLICE; MRIT
UniProt ID: (Human) O15519
Entrez Gene ID: (Human) 8837
Molecular Function: protease