rat liver plasma membranes were incubated with phospholipase a2 ( purified from snake venom ) or with filipin , a polyene antibiotic , followed by analysis of the binding of glucagon to receptors , effects of gtp on the glucagon-receptor complex , and the activity and responses of adenylate cyclase to glucagon + gtp , gtp , gpp ( nh ) p , and f- .
C0018353
gtp
C0018366
gpp ( nh ) p