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An aspartic proteinase structurally homologous with pepsin, formed from prochymosin; the milk-curdling enzyme obtained from the glandular layer of the stomach of the calf. Acts on a single peptide bond (-Phe-Met-) in κ-casein.
a serine protease present in human mast cells, most prominent in skin and connective tissue, where it can cleave angiotensin and stimulate mucous glands.
An enzyme in gastric juice that accelerates the action of the pancreatic enzymes.