1Z4N image
Deposition Date 2005-03-16
Release Date 2005-04-19
Last Version Date 2023-08-23
Entry Detail
PDB ID:
1Z4N
Keywords:
ISOMERASE
Title:
Structure of beta-phosphoglucomutase with inhibitor bound alpha-galactose 1-phosphate cocrystallized with Fluoride
Biological Source:
Source Organism:
Lactococcus lactis (Taxon ID: 1358)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.97 Å
R-Value Free:
0.23
R-Value Work:
0.20
R-Value Observed:
0.23
Space Group:
P 1 21 1
1Z4N validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Beta-phosphoglucomutase
Gene (Uniprot):pgmB
Chain IDs:A, B
Chain Length:221
Number of Molecules:2
Biological Source:Lactococcus lactis
UniProt ID:P71447 Pfam ID:PF00702 EC:5.4.2.6
Ligand Molecules
GL1
MG
Primary Citation
Chemical Confirmation of a Pentavalent Phosphorane in Complex with beta-Phosphoglucomutase
J.Am.Chem.Soc. 127 5298 5299 (2005)
PMID: 15826149 DOI: 10.1021/ja0509073

Abstact

This communication reports the X-ray crystal structure of the alpha-d-galactose-1-phosphate complex with that of Lactococcus lactis beta-phosphoglucomutase (beta-PGM) crystallized in the presence of Mg2+ cofactor and the enzyme-to-phosphorus ratio determined by protein and phosphate analyses of the crystalline complex. The 1:1 ratio determined for this complex was compared to the 1:2 ratio determined for the crystals of beta-PGM grown in the presence of substrate and Mg2+ cofactor. This result verifies the published structure assignment of this latter complex as the phosphorane adduct formed by covalent bonding between the active site Asp8 carboxylate to the C(1)phosphorus of the beta-glucose 1,6-bisphosphate ligand and rules out the proposal of a beta-PGM-glucose-6-phosphate-1-MgF3- complex.

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Primary Citation of related structures
1Z4O