True about G protein coupled receptors is
Alpha subunit of GPCR has got adenyl cyclase stimulation of inhibition of adenyl cyclase- responsible for actions of GPCR Pg.no 46 KD TRIPATHI SEVENTH EDITION
G proteins bind to hormones on the cell surface
All the three subunits alpha, beta and gamma should bind to each other for G proteins to act
G proteins act as inhibitory and excitatory because of difference in alpha subunit
G protein is bound to GTP in resting state
General pharmacology