Structure and catalytic mechanism of glucosamine 6-phosphate deaminase from Escherichia coli at 2.1 A resolution.Oliva, G., Fontes, M.R., Garratt, R.C., Altamirano, M.M., Calcagno, M.L., Horjales, E.
(1995) Structure 3: 1323-1332
- PubMed: 8747459
- DOI: https://doi.org/10.1016/s0969-2126(01)00270-2
- Primary Citation of Related Structures:
1DEA, 1HOR, 1HOT
- PubMed Abstract:
Glucosamine 6-phosphate deaminase from Escherichia coli is an allosteric hexameric enzyme which catalyzes the reversible conversion of D-glucosamine 6-phosphate into D-fructose 6-phosphate and ammonium ion and is activated by N-acetyl-D-glucosamine 6-phosphate. Mechanistically, it belongs to the group of aldoseketose isomerases, but its reaction also accomplishes a simultaneous amination/deamination. The determination of the structure of this protein provides fundamental knowledge for understanding its mode of action and the nature of allosteric conformational changes that regulate its function.
Instituto de Fisica de São Carlos, Universidade de São Paulo, Brazil.