ID 2.7.11.8 DE Fas-activated serine/threonine kinase. AN FAST. AN FASTK. CA (1) ATP + L-seryl-[Fas-activated protein] = ADP + H(+) + O-phospho-L- CA seryl-[Fas-activated protein]. CA (2) ATP + L-threonyl-[Fas-activated protein] = ADP + H(+) + O-phospho-L- CA threonyl-[Fas-activated protein]. CC -!- This enzyme is activated during Fas-mediated apoptosis. CC -!- Following Fas ligation, the enzyme, which is constitutively CC phosphorylated, is dephosphorylated, and it is the dephosphorylated CC form that causes phosphorylation of TIA-1, a nuclear RNA-binding CC protein. CC -!- Phosphorylation of TIA-1 precedes the onset of DNA fragmentation. CC -!- Formerly EC 2.7.1.37. DR Q14296, FASTK_HUMAN; Q9JIX9, FASTK_MOUSE; //