under conditions where cyclic adenosine 3':5'-monophosphate formation was linear with respect to time and protein concentration , the enzyme was stimulated 3- to 6-fold by 10 mm naf , 10- to 30-fold by 1 mum glucagon , 4- to 5-fold by 0.1 mm 5'-guanylylimidodiphosphate , and in the presence of 3 mum gtp , 2-fold by 10 mug/ml of prostaglandin e1 .
C0018366
guanylylimidodiphosphate
C0018353
gtp