with the membrane assay system in which the receptor components had been uncoupled , adenylate cyclase activities were markedly stimulated by ct ( with guanosine-5'-triphosphate , gtp ) , guanylyl-beta , gamma-imidodiphosphate ( gtp-analog , gpp [ nh ] p ) , or sodium fluoride .
C0018353
gtp
C0018366
gpp [ nh ] p