Synthesize the process of GTP hydrolysis with the reassembly of the G protein subunits to explain signal termination.

GTP hydrolysis activates adenylate cyclase, prolonging the signal.

GTP hydrolysis inhibits protein kinase A, terminating the signal.

GTP hydrolysis converts GTP to GDP, leading to the reassembly of the alpha subunit with beta gamma subunits, terminating the signal.

GTP hydrolysis causes the dissociation of epinephrine from the GPCR.