neither the guanine nucleotide regulatory protein ( n ) nor the adenylate cyclase catalyst was impaired by the drug treatment , since there was no decrease in the cyclase activity measured in the presence or absence of gtp , guanyl-5'-yl-beta-gamma-imidodiphosphate [ gpp ( nh ) p ] , naf , or forskolin .
C0018353
gtp
C0018366
gpp ( nh ) p