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 

wwPDB Validation   3D Report Full Report


This is version 1.1 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: 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 ...

    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)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PUTATIVE C-1-TETRAHYDROFOLATE SYNTHASE, CYTOPLASMICA, B300Leishmania majorMutation(s): 0 
Gene Names: LMJF_26_0320
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
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download Ideal Coordinates CCD File 
C [auth B]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
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