1Q50

Phosphoglucose isomerase from Leishmania mexicana.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The crystal structure of glucose-6-phosphate isomerase from leishmania mexicana reveals novel active site features

Cordeiro, A.T.Michels, P.A.M.Delboni, L.F.Thiemann, O.H.

(2004) EUR.J.BIOCHEM. 271: 2765-2772

  • DOI: 10.1111/j.1432-1033.2004.04205.x
  • Primary Citation of Related Structures:  1T10

  • PubMed Abstract: 
  • Glucose-6-phosphate isomerase catalyzes the reversible aldose-ketose isomerization of D-glucose-6-phosphate to D-fructose-6-phosphate in glycolysis and gluconeogenesis, and in the recycling of hexose-6-phosphate in the pentose phosphate pathway. The ...

    Glucose-6-phosphate isomerase catalyzes the reversible aldose-ketose isomerization of D-glucose-6-phosphate to D-fructose-6-phosphate in glycolysis and gluconeogenesis, and in the recycling of hexose-6-phosphate in the pentose phosphate pathway. The unicellular protozoans, Trypanosoma brucei, T. cruzi and Leishmania spp., of the order Kinetoplastida are important human parasites responsible for African sleeping sickness, Chagas' disease and leishmaniases, respectively. In these parasites, glycolysis is an important (and in some cases the only) metabolic pathway for ATP supply. The first seven of the 10 enzymes that participate in glycolysis, as well as an important fraction of the enzymes of the pentose phosphate pathway, are compartmentalized in peroxisome-like organelles called glycosomes. The dependence of the parasites on glycolysis, the importance of the pentose phosphate pathway in defense against oxidative stress, and the unique compartmentalization of these pathways, point to the enzymes contained in the glycosome as potential targets for drug design. The present report describes the first crystallographic structure of a parasite (Leishmania mexicana) glucose-6-phosphate isomerase. A comparison of the atomic structure of L. mexicana, human and other mammalian PGIs, which highlights unique features of the parasite's enzyme, is presented.


    Organizational Affiliation

    Laboratory of Protein Crystallography and Structural Biology, Physics Institute of São Carlos, University of São Paulo, São Carlos-SP, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glucose-6-phosphate isomerase
A
561Leishmania mexicanaGene Names: PGI
EC: 5.3.1.9
Find proteins for P42861 (Leishmania mexicana)
Go to UniProtKB:  P42861
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.195 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 85.744α = 90.00
b = 85.744β = 90.00
c = 350.429γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
REFMACrefinement
MAR345data collection
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-06-29
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Derived calculations, Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description