1.Renin, a proteolytic enzyme formed in the granules of the juxtaglomerular apparatus cells, catalyzes conversion of the protein angiotensinogen to angiotensin I, a decapeptide.

1.肾素是肾小球旁体粒内形成的一水解酶，催血管紧张素原转换为血管紧张素Ⅰ，即十肽。