gtp , along with its analogues 5'-guanylylimidodiphosphate ( gpp [ nh ] p ) and guanosine-5'-o- [ 3-thio ] -triphosphate ( gtp [ gamma s ] ) decreased the ca2+ requirements for secretion of all three granule constituents by one third to one order of magnitude .
C0018353
gtp
C0079469
gtp [ gamma s