IUBMB Enzyme Nomenclature


Accepted name: pepsin B

Reaction: Degradation of gelatin; little activity on hemoglobin. Specificity on B chain of insulin more restricted than that of pepsin A; does not cleave at Phe1-Val, Gln4-His or Gly23-Phe

Other names: parapepsin I; pig gelatinase

Comments: Formed from pig pepsinogen B. In peptidase family A1 (pepsin A family)

Links to other databases: BRENDA, EXPASY, KEGG, MEROPS, Metacyc, CAS registry number: 9025-48-3


1. Ryle, A.P. The porcine pepsins and pepsinogens. Methods Enzymol. 19 (1970) 316-336

[EC created 1961 as EC, transferred 1972 to EC, modified 1986]

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