1JLH

Human Glucose-6-phosphate Isomerase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal structure of human phosphoglucose isomerase and analysis of the initial catalytic steps

Cordeiro, A.T.Godoi, P.H.C.Silva, C.H.T.P.Garratt, R.C.Oliva, G.Thiemann, O.H.

(2003) Biochim Biophys Acta 1645: 117-122

  • DOI: 10.1016/s1570-9639(02)00464-8
  • Primary Citation of Related Structures:  
    1JLH

  • PubMed Abstract: 
  • The second enzyme in the glycolytic pathway, phosphoglucose isomerase (PGI), catalyses an intracellular aldose-ketose isomerization. Here we describe the human recombinant PGI structure (hPGI) solved in the absence of active site ligands. Crystals is ...

    The second enzyme in the glycolytic pathway, phosphoglucose isomerase (PGI), catalyses an intracellular aldose-ketose isomerization. Here we describe the human recombinant PGI structure (hPGI) solved in the absence of active site ligands. Crystals isomorphous to those previously reported were used to collect a 94% complete data set to a limiting resolution of 2.1 A. From the comparison between the free active site hPGI structure and the available human and rabbit PGI (rPGI) structures, a mechanism for protein initial catalytic steps is proposed. Binding of the phosphate moiety of the substrate to two distinct elements of the active site is responsible for driving a series of structural changes resulting in the polarisation of the active site histidine, priming it for the initial ring-opening step of catalysis.


    Organizational Affiliation

    Laboratory of Protein Crystallography and Structural Biology, Physics Institute of São Carlos, University of São Paulo-USP, Av Trabalhador Sãocarlense 400, PO Box 369, 13566-590 São Carlos-SP, Brazil.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
phosphoglucose isomeraseABCD558Homo sapiensMutation(s): 0 
Gene Names: GPI
EC: 5.3.1.9
Find proteins for P06744 (Homo sapiens)
Explore P06744 
Go to UniProtKB:  P06744
NIH Common Fund Data Resources
PHAROS  P06744
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.197 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.75α = 90
b = 108.021β = 90
c = 271.073γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MAR345data collection
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2001-07-16 
  • Released Date: 2003-02-11 
  • Deposition Author(s): Cordeiro, A.T.

Revision History 

  • Version 1.0: 2003-02-11
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description