1NE7: Human Glucosamine-6-Phosphate Deaminase Isomerase At 1.75 A Resolution Complexed With N-Acetyl-Glucosamine-6-Phosphate And 2-Deoxy-2-Amino-Glucitol-6-Phosphate

Citation:
Abstract
Glucosamine-6-phosphate deaminase (EC 3.5.99.6) is an allosteric enzyme that catalyzes the reversible conversion of D-glucosamine-6-phosphate into D-fructose-6-phosphate and ammonium. Here we describe the existence of two mammalian glucosamine-6-phosphate deaminase enzymes. We present the crystallographic structure of one of them, the long human glucosamine-6-phosphate deaminase, at 1.75 A resolution. Crystals belong to the space group P2(1)2(1)2(1) and present a whole hexamer in the asymmetric unit. The active-site lid (residues 162-182) presented significant structural differences among monomers. Interestingly the region with the largest differences, when compared with the Escherichia coli homologue, was found to be close to the active site. These structural differences can be related to the kinetic and allosteric properties of both mammalian enzymes.
PDB ID: 1NE7Download
MMDB ID: 24652
PDB Deposition Date: 2002/12/10
Updated in MMDB: 2012/12
Experimental Method:
x-ray diffraction
Resolution: 1.75  Å
Source Organism:
Similar Structures:
Biological Unit for 1NE7: hexameric; determined by author and by software (PISA)
Molecular Components in 1NE7
Label Count Molecule
Proteins (6 molecules)
6
Glucosamine-6-phosphate Isomerase(Gene symbol: GNPDA1)
Molecule annotation
Chemicals (31 molecules)
1
12
2
6
3
7
4
6
* Click molecule labels to explore molecular sequence information.

Citing MMDB
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