gs did not stimulate adenylate cyclase activity by itself , but amplified the response of adenylate cyclase in crc membranes to both synthetic bovine pth- ( 1-34 ) [ bpth- ( 1-34 ) ] and to the hydrolysis-resistant gtp analog 5'-guanylimido-diphosphate [ gpp ( nh ) p ] .
C0018353
gtp
C0018366
gpp ( nh ) p