the enzyme sensitivity to the action of isoproterenol ( 0.1 mm ) and gtp ( 0.1 mm ) decreases by 50 % for 15 min , that to guanylyl imidodiphosphate , a non-hydrolyseable analog of atp , by 20-25 % for 40 min .
C0018353
gtp
C0018366
guanylyl imidodiphosphate