ACE (Angiotensin-Converting Enzyme): ACE is a crucial enzyme in the Renin-Angiotensin System (RAS), primarily involved in blood pressure regulation and fluid balance. It catalyzes the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, thereby playing a pivotal role in controlling vascular tone and electrolyte balance. Angiotensin II's effects include constriction of blood vessels, stimulation of aldosterone secretion, and elevation of blood pressure. Beyond its vasoactive functions, ACE has implications in various physiological and pathological processes, including heart function, kidney disease, and inflammatory responses. Dysregulation of ACE activity is associated with hypertension, heart failure, and renal diseases, making it...