RIP antibody

RIP (Receptor Interacting Protein) is a 74 kD Ser/Thr kinase which interacts with CD95 (Fas/APO1) receptor and the tumor necrosis factor receptor (TNFR1). It is a cell death domain adapter protein which can bind to the adapter proteins TRADD, RAID (CRADD) and TRAF2. RIP contains an N-terminal region with homology to protein kinases, an intermediate domain capable of association with MAPKKK and a C-terminal region containing an intracellular death domain motif. RIP activates both p38 MAP Kinase and SAPK families.3 In-vitro, RIP induces apoptosis, as well as SAPK/JNK and NF-kB activation. NF-kB activation through TRADD, TRAF2 and RIP can be triggered also by DR3/APO3 upon activation with APO3/Tweak ligand.DR4 and DR5 also use FADD, TRADD, and RIP in their signal transduction pathways. RIP-deficient mice fail to thrive, displaying extensive apoptosis in both lymphoid and adipose tissues and dying at 1-3 days of age. RIP possesses kinase activity as it autophosphorylates itself on serine and threonine residues.