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. 1967 Oct;105(1):121-5.
doi: 10.1042/bj1050121.

The purification and properties of N-acetylglucosamine 6-phosphate deacetylase from Escherichia coli

R J White, C A Pasternak

The purification and properties of N-acetylglucosamine 6-phosphate deacetylase from Escherichia coli

R J White et al. Biochem J. 1967 Oct.

Abstract

1. N-Acetylglucosamine 6-phosphate deacetylase and 2-amino-2-deoxy-d-glucose 6-phosphate ketol-isomerase (deaminating) (EC 5.3.1.10, glucosamine 6-phosphate deaminase) of Escherichia coliK(12) have been separated by chromatography on DEAE-cellulose. 2. N-Acetylglucosamine 6-phosphate deacetylase has optimum pH8.5 and K(m) 0.8mm. Glucosamine 6-phosphate is a product of the reaction. There appear to be no essential cofactors. Glucosamine 6-phosphate and fructose 6-phosphate inhibit deacetylation. 3. Glucosamine 6-phosphate deaminase has optimum pH7.0 and K(m) 9.0mm. It is stimulated by N-acetylglucosamine 6-phosphate. 4. We propose that the deacetylase be termed 2-acetamido-2-deoxy-d-glucose 6-phosphate amidohydrolase (EC 3.5.1.-), with acetylglucosamine 6-phosphate deacetylase as a trivial name.

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