Crystal structure of the Leishmania infantum glyoxalase II

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 

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This is version 1.2 of the entry. See complete history


Catalysis and Structural Properties of Leishmania infantum Glyoxalase II: Trypanothione Specificity and Phylogeny.

Silva, M.S.Barata, L.Ferreira, A.E.Romao, S.Tomas, A.M.Freire, A.P.Cordeiro, C.

(2008) Biochemistry 47: 195-204

  • DOI: https://doi.org/10.1021/bi700989m
  • Primary Citation of Related Structures:  
    2P18, 2P1E

  • PubMed Abstract: 

    The glyoxalase pathway catalyzes the formation of d-lactate from methylglyoxal, a toxic byproduct of glycolysis. In trypanosomatids, trypanothione replaces glutathione in this pathway, making it a potential drug target, since its selective inhibition might increase methylglyoxal concentration in the parasites. Two glyoxalase II structures were solved. One with a bound spermidine molecule (1.8 A) and the other with d-lactate at the active site (1.9 A). The second structure was obtained by crystal soaking with the enzyme substrate (S)-d-lactoyltrypanothione. The overall structure of Leishmania infantum glyoxalase II is very similar to its human counterpart, with important differences at the substrate binding site. The crystal structure of L. infantum glyoxalase II is the first structure of this enzyme from trypanosomatids. The differential specificity of glyoxalase II toward glutathione and trypanothione moieties was revealed by differential substrate binding. Evolutionary analysis shows that trypanosomatid glyoxalases II diverged early from eukaryotic enzymes, being unrelated to prokaryotic proteins.

  • Organizational Affiliation

    Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glyoxalase II311Leishmania infantumMutation(s): 0 
Gene Names: GLO2
Find proteins for Q2PYN0 (Leishmania infantum)
Explore Q2PYN0 
Go to UniProtKB:  Q2PYN0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ2PYN0
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.705α = 90
b = 88.989β = 90
c = 85.864γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PDB_EXTRACTdata extraction
MxCuBEdata collection
MOSFLMdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-01-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2023-08-30
    Changes: Data collection, Database references, Derived calculations, Refinement description