the gtp analogues , guanosine 5'- [ gamma-thio ] triphosphate ( gtp [ gamma s ] and guanosine 5'- [ beta , gamma-imido ] triphosphate , being potent activators of guanine-nucleotide-binding proteins ( g proteins ) , stimulated o2- formation up to 3.5-fold .
C0018353
gtp
C0079469
gtp [ gamma s