ENTRY       EC 3.4.23.2
NAME        Pepsin B
            Parapepsin I
            Pig gelatinase
CLASS       Hydrolases
            Acting on peptide bonds (peptidases)
            Aspartic endopeptidases
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
SUBSTRATE   Gelatine
            H2O
            N-Acetyl-L-phenylalanyl-L-diiodotyrosine
PRODUCT     Oligopeptide
            N-Acetyl-L-phenylalanine
            L-Diiodotyrosine
COMMENT     Formed from pig pepsinogen B.
DBLINKS     University of Geneva ENZYME DATA BANK: 3.4.23.2
            WIT (What Is There) Metabolic Reconstruction: 3.4.23.2
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