<prompt> Angiotensin-conveing enzymes areZinc containing and cleaves C-terminal of AT-1Zinc containing enzyme and cleaves the signal poion of AT-!Copper containing and cleaves C-terminal of AT-!Copper containing enzyme and cleaves the signal poion of AT-1  <response>: The structure of the somatic form of angiotensin-conveing enzyme has sho cytoplasmic tail of the molecule and the two extracellular catalytic sites, each of which binds a zinc ion Zn2. Angiotensin-conveing enzyme ACE is a dipeptidyl carboxypeptidase that splits off histidyl-leucineat C-terminal of AT1 from the physiologically inactive angiotensin I, forming the octapeptide angiotensin II. Ref: Ganongs Review of Medical Physiology, 23rd edition, page no: 670, 672 Ref of image: 