the kinetic properties of enzyme with regard to the ka ( quantity of agonist required for half-maximal stimulation of adenylate cyclase ) values for gtp , gpp ( nh ) p , and gtp-gamma-s in the absence and presence of isoproterenol and the ka values for isoproterenol in the presence of gtp , gpp ( nh ) p , or gtp-gamma-s were comparable in rhr and control rats .
C0018353
gtp
C0079469
gtp-gamma-s