catalyzed by has input has output cleavage of angiotensin into angiotension II by ACE A protein process where Angiotensin-converting enzyme (EC 3.4.15.1) or ACE converts the hormone angiotensin I to the active vasoconstrictor angiotensin II. Oliver He ACE is a central component of the renin–angiotensin system (RAS), which controls blood pressure by regulating the volume of fluids in the body. ACE indirectly increases blood pressure by causing blood vessels to constrict. ACE inhibitors are widely used as pharmaceutical drugs for treatment of cardiovascular diseases. https://en.wikipedia.org/wiki/Angiotensin-converting_enzyme protein processing angiotensin-converting enzyme angiotensin I angiotensin II