Biological Assembly 1  

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 125392.71 
• Atom Count: 8834 
• Residue Count: 1114 
• Unique protein chains: 1

1N8T

The crystal structure of phosphoglucose isomerase from rabbit muscle

• DOI: 10.2210/pdb1N8T/pdb

• Classification: ISOMERASE
• Organism(s): Oryctolagus cuniculus


• Deposited: 2002-11-21 Released: 2003-03-04 
• Deposition Author(s): Davies, C., Muirhead, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• R-Value Free: 0.234 
• R-Value Work: 0.178 

Literature

Structure of native phosphoglucose isomerase from rabbit: conformational changes associated with catalytic function.

Davies, C., Muirhead, H.

(2003) Acta Crystallogr.,Sect.D 59: 453-465

• PubMed: 12595702 


• PubMed Abstract: 
  

Phosphoglucose isomerase (PGI) is a housekeeping enzyme of metabolism that catalyses the interconversion of glucose 6-phosphate and fructose 6-phosphate, with roles in the glycolytic and gluconeogenic pathways. PGI is also a multifunctional protein that manifests the properties of a cytokine in a wide array of cellular processes, including the production of immunoglobulin by B cells and tumour-cell differentiation. The crystal structure of PGI in the native form from rabbit muscle has been solved at a resolution of 2.5 A by a combination of multiple isomorphous replacement and multi-crystal averaging techniques. Comparison with published structures of rabbit PGI in complex with three inhibitors and with the substrate fructose 6-phosphate reveals a number of conformational changes that may be associated with catalytic function. These occur in the small domain around the sugar phosphate-binding site, in a small helix carrying His388 and in a helix near the C-terminal end. One of these may be the structural rearrangement that has been postulated to be the rate-limiting step for catalysis.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Glucose-6-phosphate isomerase	A, B	557	Oryctolagus cuniculus	Mutation(s): 0  Gene 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: 2.5 Å
• R-Value Free: 0.234 
• R-Value Work: 0.178 
• Space Group: C 2 2 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 83.067	α = 90.00
b = 115.174	β = 90.00
c = 271.500	γ = 90.00

Software Package:

Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling
MLPHARE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-11-21 
• Released Date: 2003-03-04 
• Deposition Author(s): Davies, C., Muirhead, H.

Revision History 

• Version 1.0: 2003-03-04
  Type: Initial release
• Version 1.1: 2008-04-28
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2017-10-11
  Type: Refinement description