stimulatory action of lisuride , similar to the actions of dopamine and apomorphine , on striatal adenylate cyclase was potentiated significantly by guanosine triphosphate ( gtp ) and by guanyl-5'-yl imidodiphosphate ( gmp-pnp ) , although with lisuride alone , there was only a slight stimulation .
C0018353
guanosine triphosphate
C0018366
gmp-pnp