. "Edited: Jassal, B, 2008-11-06 10:17:49"^^ . "Reviewed: Castagnoli, L, 2008-11-06 12:55:54"^^ . "Authored: Le Novere, N, Jassal, B, 2004-03-31 12:22:05"^^ . "PLC-beta1 is a GTPase-activating protein (GAP) for Gq-alpha, exchanging GTP for GDP and releasing the alpha subunit to cycle back to the membrane and reassociate with the beta-gamma subunits. Between itself and the receptor, they regulate the amplitude of the PLC signal and the rates of signal initiation and termination."^^ . . . . . . "Inactivation of PLC beta"^^ . . . . . .