ASP-ARG-VAL-TYR-VAL-HIS-PRO-PHE-HIS-LEU

5-L-Valine-angiotensin I, is an Ang 1 peptide used in renin-angiotensin system studies. Angiotensin I is a putative neurotransmitter. It is the precursor of angiotensin II and of angiotensin fragment 1-7, which are the hormones involved in regulation of fluid volume and the release of aldosterone.