靶标信息
Angiotensin III is an eptapeptide drived from cleavage of full length angiotensin (AGT). AGT is a polypeptide vasopressor hormone formed by the catalytic action of renin, which is released mainly by the kidneys in response to low blood volume or low sodium content in the body. The juxtaglomerular cells release renin when juxtaglomerular apparatus decreases in the kidneys. Renin (called angiotensinogenase) is an enzyme of the hydrolase class that catalyzes cleavage of the leucine leucine bond in angiotensinogen (a serum globulin) to generate angiotensin I in the liver. Angiotensin I acts mainly as a precursor to angiotensin II, which is a vasopressor and stimulator of aldosterone secretion by the adrenal cortex, and also functions as a neurotransmitter. Angiotensin III (heptapeptide) is a degradation product of angiotensin II, and has less vasopressor activity than the parent compound. However, Angiotensin III does stimulate aldosterone release.