in the initial attack of diacylphosphoglycerides by phospholipase a two enzymatic activities with different positional specificities have been distinguished : phospholipase a1 ( phosphatidate 1-acyl hydrolase en 3.1.1.32 ) and phospholipase a2 ( phosphatidate 2-acyl hydrolase en 3.1.1.4 ) ( van deenen & de haas , 1966 ) .
C0031672
phospholipase a
C0031667
phospholipase a2