g protein regulation of human platelet membrane phospholipase a2 activity was investigated at ph 8.0 and 9.0 by studying the effects of the nonhydrolyzable gtp analogue , guanosine 5'-o- ( 3-thiotriphosphate ) ( gtp gamma s ) , and of f-/al3+ ions on arachidonic acid ( aa ) release .
C0018353
gtp
C0079469
gtp gamma s