Mast cell degranulation

特許 係属中 An important adaptor protein activated by the Syk phosphorylation step is the linker for activation of T cells (LAT). LAT is important because it can be modified by phosphorylation to create novel binding sites.[13] Phospholipase C (PLCγ), becomes phosphorylated once bound to LAT, and is then used to catalyze Phosphatidylinositol bisphosphate breakdown to yield inositol trisphosphate (IP3) and diacyglycerol (DAG). IP3 elevates calcium levels, and DAG activates protein kinase C (PKC). This is not the only way that PKC is made. The tyrosine kinase, Fyn, phosphorylates a Grb-2-associated binder-like protein 2 (Gab2) which binds to phosphoinositide 3-kinase which activates PKC.PKC leads to the activation of myosin light-chain phosphorylation granule movements which disassembles the actin-myosin complexes to allow granules to come into contact with the plasma membrane