the inhibitory phase of gpp ( nh ) p action and the previously reported ( harwood , j.p. , low , h. , and rodbell , m. ( 1973 ) j. biol . chem . 248 , 6239-6245 ) inhibitory effects of gtp are abolished by increasing ( mg2+ ) and ph to 50 mm and 8.5 , respectively .
C0018366
gpp ( nh ) p
C0018353
gtp