proteinase Biochem.
(ˈprəʊtiːneɪz, -s)
[a. G. proteinase (Grassmann & Dyckerhoff 1928, in Zeitschr. f. physiol. Chem. CLXXIX. 41): see protein and -ase.]
Any enzyme that hydrolyses proteins to smaller polypeptides.
| 1929 Chem. Abstr. XXIII. 615 Plant proteases... The proteinase and the polypeptidase of yeast. 1931 Biochem. Jrnl. XXV. 256 In their main conclusions these authors agreed that green malt contains (1) a protease or proteinase (to adopt the nomenclature of Grassmann) which appears to attack..crystalline egg-albumin..and (2) at least one peptidase which attacks the dipeptide leucylglycine. 1941 Adv. Enzymol. I. 76 Pepsin, trypsin, and chymotrypsin represent the three best recognized proteinases. 1963 Biochem. Jrnl. LXXXVI. 100/1 The purified proteinase probably liberated peptides from a boiled sample of α2-crystallin, and it seems probable that the lens proteinase is an endopeptidase. 1970 Passmore & Robson Compan. Med. Stud. II. xviii. 33/1 Potent bacterial proteinases and collagenases decompose muscle tissue and collagen. |