This octapeptide Angiotensin II, DRVYIHPF, is biotinylated on the N-terminus via an LC (long chain, also known as 6-Aminohexanoyl, 6-Aminocaproyl or Ahx) linker. It can be used in ELISA assay. Angiotensin II (Ang II) exerts a wide range of effects on the cardiovascular system. It is also implicated in the regulation of cell proliferation, fibrosis and apoptosis. Ang II is formed by cleavage of Ang I by the angiotensin-converting enzyme (ACE) or chymases. Human heart chymase, a chymotrypsin-like serine proteinase, hydrolyzes the Phe8-His9 bond to yield the octapeptide hormone angiotensin II and His-Leu.