identified neurones in the abdominal ganglion of aplysia californica were voltage clamped in order to investigate how guanosine 5'-o- ( 3-thiotriphosphate ) ( gtp-gamma-s ) , a gtp analogue that irreversibly activates guanine nucleotide-binding ( g ) proteins , modifies activation by the neuropeptide fmrfamide ( phe-met-arg-phe-nh2 ) of a slow k+ current resembling the serotonin- and adenosine 3',5'-cyclic monophosphate ( cyclic amp ) -sensitive 's ' current , and a similar response to acetylcholine .
C0079469
gtp-gamma-s
C0018353
gtp