Angiotensin 1-7 (Ang-(1-7)) is a component of the renin angiotensin system RAS. Ang-(1-7) is produced by angiotensin-converting enzyme 2 (ACE2), from the angiotensin II (Ang-II) peptide, as well as by prolylendopeptidase (PEP) and neutral endopeptidase (NEP) which produce Ang-(1‑7) directly from angiotensin I (Ang-I).
Ang-(1-7) broadly opposes Ang-II actions. Ang-(1–7) has vasodilatory and anti-oxidative effects, and exerts protective actions in hypertension, diabetes, and other cardiovascular disorders, Ang-(1-7) therefore represents a promising therapeutic target for cardiovascular and metabolic diseases. Ang‑(1-7) exerts its actions via its G-protein-coupled receptor, Mas. This novel arm of the RAS has effects that counterbalance those mediated by the classical ACE/Ang-II pathway.
The valine residue at position 3 and the isoleucine residue at position 5 of this peptide are isotopically labelled with carbon-13 (11) and nitrogen-15 (2), giving this peptide a mass increase of 13 compared to the unlabelled peptide