dephosphorylation of b-50 in synaptic membranes is stimulated by atp , adp , or adenosine 5'-o-thiotriphosphate , but not by adenine , adenosine , other adenine or guanine nucleotides , nonhydrolyzable analogs of atp or gtp , nor by adenosine 5'-o- ( 2-thiodiphosphate ) .
C0018328
guanine nucleotides
C0018353
gtp