A proteolytic enzyme secreted by the kidneys; catalyzes the formation of angiotensin and thus affects blood pressure WordNet 3.0 & Open English WordNet

Renin, also known as an angiotensinogenase, is an aspartic protease protein and enzyme secreted by the kidneys that participates in the body's renin–angiotensin–aldosterone system —also known as the renin–angiotensin–aldosterone axis—that increases the volume of extracellular fluid and causes arterial vasoconstriction. Wikipedia

Protein-coding gene in the species Homo sapiens Wikidata

Renin produced in -kidneys and increases blood pressure Wikidata

A circulating enzyme released by mammalian kidneys that converts angiotensinogen to angiotensin-I. Because its activity ultimately leads to formation of angiotensin-II and aldosterone, this hormone plays a role in maintaining blood pressure. Wiktionary

Enzyme. Wiktionary (translation)