angiotensin III

(redirected from A-III)
Also found in: Acronyms.

an·gi·o·ten·sin III

(an'jē-ō-ten'sin),
A vasoactive heptapeptide less potent than angiotensin II on vascular smooth muscle but approximately equally active in promoting aldosterone secretion.

angiotensin III

A heptapeptide derived from angiotensin II after angiotensinases in red blood cells and in vascular beds cleave the N-terminal aspartame. Angiotensin III has 40% of A-II’s pressor activity and 100% of its aldosterone-producing activity.