4A26

The crystal structure of Leishmania major N5,N10- methylenetetrahydrofolate dehydrogenase/cyclohydrolase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.234 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

The Crystal Structure of Leishmania Major N(5),N(10)-Methylenetetrahydrofolate Dehydrogenase/Cyclohydrolase and Assessment of a Potential Drug Target.

Eadsforth, T.C.Cameron, S.Hunter, W.N.

(2012) Mol Biochem Parasitol 181: 178

  • DOI: https://doi.org/10.1016/j.molbiopara.2011.11.004
  • Primary Citation of Related Structures:  
    4A26

  • PubMed Abstract: 

    Three enzyme activities in the protozoan Leishmania major, namely N(5),N(10)-methylenetetrahydrofolate dehydrogenase/N(5),N(10)-methenyltetrahydrofolate cyclohydrolase (DHCH) and N(10)-formyltetrahydrofolate ligase (FTL) produce the essential intermediate N(10)-formyltetrahydrofolate. Although trypanosomatids possess at least one functional DHCH, the same is not true for FTL, which is absent in Trypanosoma brucei. Here, we present the 2.7 Å resolution crystal structure of the bifunctional apo-DHCH from L. major, which is a potential drug target. Sequence alignments show that the cytosolic enzymes found in trypanosomatids share a high level of identity of approximately 60%. Additionally, residues that interact and participate in catalysis in the human homologue are conserved amongst trypanosomatid sequences and this may complicate attempts to derive potent, parasite specific DHCH inhibitors.


  • Organizational Affiliation

    Division of Biological Chemistry and Drug Discovery, College of Life Sciences, University of Dundee, Dundee DD1 5EH, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PUTATIVE C-1-TETRAHYDROFOLATE SYNTHASE, CYTOPLASMIC
A, B
300Leishmania majorMutation(s): 0 
EC: 1.5.1.5 (PDB Primary Data), 3.5.4.9 (PDB Primary Data)
UniProt
Find proteins for Q4Q9F9 (Leishmania major)
Explore Q4Q9F9 
Go to UniProtKB:  Q4Q9F9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4Q9F9
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download Ideal Coordinates CCD File 
C [auth B]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.234 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 117.22α = 90
b = 220.08β = 90
c = 56.31γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-10-26
    Type: Initial release
  • Version 1.1: 2012-02-08
    Changes: Other
  • Version 1.2: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description