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[Molecular structure of aminopeptidase A from bovine kidney].

Chulkova Tm, Orekhovich Vn

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Abstract

Using gel-filtration through Sephadex G-100 and polyacrylamide gel electrophoresis in the presence of 0,5% sodium dodecyl sulfate, it was found that aminopeptidase A has a molecular weight of 65 000 +/- 2000 and is made up of two subunits with mol. weights of 33 000 +/- 2000. Each subunit consists of two polypeptide chains with mol. weights of 22 000 +/- 2000 and 12 000. During enzyme dissociation into subunits the aspartylnaphtylamidase activity is lost, while the glutamylnaphtylamidase activity is retained.

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What this paper is about

Using gel-filtration through Sephadex G-100 and polyacrylamide gel electrophoresis in the presence of 0,5% sodium dodecyl sulfate, it was found that aminopeptidase A has a molecular weight of 65 000 +/- 2000 and is made up of two subunits with mol. weights of 33 000 +/- 2000. Each subunit consists of two polypeptide chains with mol. weights of 22 000 +/- 2000 and 12 000. During enzyme dissociation into subunits the aspartylnaphtylamidase activity is lost, while the glutamylnaphtylamidase activity is retained.

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Available abstract

Using gel-filtration through Sephadex G-100 and polyacrylamide gel electrophoresis in the presence of 0,5% sodium dodecyl sulfate, it was found that aminopeptidase A has a molecular weight of 65 000 +/- 2000 and is made up of two subunits with mol. weights of 33 000 +/- 2000. Each subunit consists of two polypeptide chains with mol. weights of 22 000 +/- 2000 and 12 000. During enzyme dissociation into subunits the aspartylnaphtylamidase activity is lost, while the glutamylnaphtylamidase activity is retained.

Key concepts: Sephadex, Size-exclusion chromatography, Aminopeptidase, Chemistry, Molecular mass, Sodium dodecyl sulfate, Protein subunit, Polyacrylamide gel electrophoresis

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