when the non-hydrolyzable gtp analogues , gtp gamma s ( 0.1 mm ) or 5'-guanylylimidodiphosphate ( gppnhp ; 0.1 mm ) were used , the decrease in outward current was greater ( 85 +/- 4.2 and 78 +/- 6.5 % , respectively ) , and it was not reversed on withdrawal of ach .
C0018353
gtp
C0079469
gtp gamma s