Purification and characterization of an aminopeptidase from tuna (Thunnus albacares) pyloric caeca.

Abstract

An aminopeptidase was purified from a water soluble fraction of tuna pyloric caeca by heat treatment, Zn2+ fractionation, ion exchange on a DEAE cellulose column, gel filtration on Fractogel TSK-55, and immobilized metal ion affinity chromatography (IMAC) on IDA(Cu2+/Zn2+)-Sepharose 6B. The molecular mass of the enzyme was estimated to be 150,000 on… (More)

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