we report that of the series of guanine nucleotides tested , gtp , gdp , 5'-guanylylimidodiphosphate ( gpp ( nh ) p ) and 5'-guanylylmethylenediphosphate ( gpp ( ch2 ) p ) are significantly more potent at decreasing [ 3h ] tcp binding than gmp , cyclic gmp , and guanosine .
C0018328
guanine
C0018353
gtp