calmodulin did not influence the regulatory components of the neurotransmitter-dependent pathway as shown by the lack of effect on ( 1 ) receptor affinity , ( 2 ) gtp requirement for receptor-mediated activation , ( 3 ) rate of activation by guanyl 5 ? -yl imidodiphosphate [ gpp ( nh ) p ] .
C0018353
gtp
C0018366
gpp ( nh ) p