G-protein-coupled receptors (GPCRs) all have a similar struc…
G-protein-coupled receptors (GPCRs) all have a similar structure with ____________ transmembrane domains. When a GPCR binds an extracellular signal, an intracellular G protein, composed of _________ subunits, becomes activated. When unstimulated, the α subunit is bound to ________, which is exchanged for _______ upon stimulation. The intrinsic ________ activity of the α subunit is important for inactivating the G protein, as can be _________ proteins. The α subunits come in different types, for example, Gαs subunits typically activate an effector protein to increase intracellular _______. Each matched value will only be used once. guanylyl cyclase GTPase adenylyl cyclase phospholipase C phosphodiesterase RGS seven three two ATP GDP cAMP GTP Ca2+