however , when the platelet adenylate cyclase was activated via the stimulatory coupling component , ns , e.g. , by the hormone , prostaglandin e1 , or the stable gtp analog , guanosine 5'- [ gamma-thio ] triphosphate , added in combination with a protease , forskolin was able to inhibit the enzyme .
C0030946
protease
C0014442
enzyme