two pathways have been demonstrated in the iris through which aa can be released directly from phosphoinositides : ( a ) phosphoinositides can be hydrolyzed by phospholipase c , followed by hydrolysis of dg via lipases to liberate aa , and ( b ) aa can be released directly from phosphoinositides via phospholipase a2 .
C0020291
hydrolysis
C0031667
phospholipase a2