产品概述

Phospholipase A2s (PLA2s) constitute a family of esterases that hydrolyze the sn-2-acyl ester bond in glycerophospholipid molecules. These enzymes are generally calcium-dependent and have been found both intra- and extracellularly. PLA2s include both the relatively low molecular weight type I and type II enzymes and the form known as cytoplasmic PLA2 (cPLA2). cPLA2 is present in the cytosol of various cells and tissues including platelets, macrophages and monoblasts; and preferentially hydrolyzes the sn-2 position of phospholipid molecules, releasing free arachidonate. The hydrolysis reaction also produces lysophospholipids that are converted into platelet-activating factor.