<unk>  (etymology and pronunciation), also known as an angiotensinogenase, is an aspartic protease protein and enzyme secreted by the kidneys that participates in the body's<unk> –angiotensin–aldosterone system (RAAS)—also known as the<unk> –angiotensin–aldosterone axis—that mediates the volume of extracellular fluid (blood plasma, lymph and interstitial fluid) and arterial vasoconstriction. Thus, it regulates the body's mean arterial blood pressure.<unk>  is not commonly referred to as a hormone, albeit it having a receptor, the (pro)renin receptor, also known as the<unk>  receptor and prorenin receptor (see also below), as well as enzymatic activity with which it hydrolyzes angiotensinogen to angiotensin I.
Renin
Prorenin
Adrenalone
Thyroglobulin
Prolene
Modulin
Orexin
Vasopressin