of the series of guanine nucleotides tested in the inhibition of nmda-specific l- [ 3h ] glutamate binding , gtp , gdp , 5'-guanylylimidodiphosphate and 5'-guanylylmethylenediphosphate were significantly more potent than gmp , cyclic gmp and guanosine .
C0018328
guanine nucleotides
C0018353
gtp