1T10

Phosphoglucose isomerase from Leishmania mexicana in complex with substrate D-fructose-6-phosphate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.222 

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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.Delboni, L.F.Thiemann, O.T.

(2004) Eur J Biochem 271: 2765-2772

  • DOI: 10.1111/j.1432-1033.2004.04205.x
  • Primary Citation of Related Structures:  
    1Q50, 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 unicellular protozoans, Trypanosoma brucei, T ...

    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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Glucose-6-phosphate isomeraseA605Leishmania mexicana mexicanaMutation(s): 0 
Gene Names: PGI
EC: 5.3.1.9
UniProt
Find proteins for P42861 (Leishmania mexicana)
Explore P42861 
Go to UniProtKB:  P42861
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP42861
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
F6P
Query on F6P

Download Ideal Coordinates CCD File 
B [auth A]6-O-phosphono-beta-D-fructofuranose
C6 H13 O9 P
BGWGXPAPYGQALX-ARQDHWQXSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.222 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.129α = 90
b = 85.129β = 90
c = 350.089γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
SCALAdata scaling
AMoREphasing
REFMACrefinement
HKL-2000data reduction
CCP4data scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-06-29
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Derived calculations, Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary