1HM5

CRYSTAL STRUCTURE ANALYSIS OF THE RABBIT D-GLUCOSE 6-PHOSPHATE ISOMERASE (NO LIGAND BOUND)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Conformational Changes in Phosphoglucose Isomerase Induced by Ligand Binding

Arsenieva, D.A.Jeffery, C.J.

(2002) J.Mol.Biol. 323: 77-84


  • PubMed Abstract: 
  • Phosphoglucose isomerase (PGI; EC 5.3.1.9) is the second enzyme in glycolysis, where it catalyzes the isomerization of D-glucose-6-phosphate to D-fructose-6-phosphate. It is the same protein as autocrine motility factor, differentiation and maturatio ...

    Phosphoglucose isomerase (PGI; EC 5.3.1.9) is the second enzyme in glycolysis, where it catalyzes the isomerization of D-glucose-6-phosphate to D-fructose-6-phosphate. It is the same protein as autocrine motility factor, differentiation and maturation mediator, and neuroleukin. Here, we report a new X-ray crystal structure of rabbit PGI (rPGI) without ligands bound in its active site. The structure was solved at 1.8A resolution by isomorphous phasing with a previously solved X-ray crystal structure of the rPGI dimer containing 6-phosphogluconate in its active site. Comparison of the new structure to previously reported structures enables identification of conformational changes that occur during binding of substrate or inhibitor molecules. Ligand binding causes an induced fit of regions containing amino acid residues 209-215, 245-259 and 385-389. This conformational change differs from the change previously reported to occur between the ring-opening and isomerization steps, in which the helix containing residues 513-521 moves toward the bound substrate. Differences between the liganded and unliganded structures are limited to the region within and close to the active-site pocket.


    Organizational Affiliation

    Laboratory for Molecular Biology, MC567, Department of Biological Sciences, University of Illinois, Chicago, IL 60607, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOSPHOGLUCOSE ISOMERASE
A, B
558Oryctolagus cuniculusGene Names: GPI
EC: 5.3.1.9
Find proteins for Q9N1E2 (Oryctolagus cuniculus)
Go to Gene View: GPI
Go to UniProtKB:  Q9N1E2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.183 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 82.756α = 90.00
b = 115.966β = 90.00
c = 271.845γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-09-27
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-11-16
    Type: Atomic model