addition of 10 microm guanosine triphosphate ( gtp ) and guanyl-5'-yl imidodiphosphate [ gmp-p ( nh ) p ] inhibited forskolin activation by 10-15 % and 30-40 % , respectively , in the presence of 3.0 mm mgcl2 .
C0018353
guanosine triphosphate
C0018366
guanyl-5