mg-atp ( 0.5 and 5 mm ) as well as mg-gtp ( 5 mm ) stabilized renin granules at +37 degrees c , ph 6.5 , but the corresponding nitrogen analogues mg-amp-pnp and mg-gmp-pnp ( 0.5 and 5 mm ) were not effective .
C0018353
gtp
C0018366
gmp-pnp