4A26

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.231 

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

  • 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 interme ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PUTATIVE C-1-TETRAHYDROFOLATE SYNTHASE, CYTOPLASMIC
A, B
300Leishmania majorMutation(s): 0 
EC: 1.5.1.5, 3.5.4.9
Find proteins for Q4Q9F9 (Leishmania major)
Go to UniProtKB:  Q4Q9F9
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.231 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 117.220α = 90.00
b = 220.080β = 90.00
c = 56.310γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-10-26
    Type: Initial release
  • Version 1.1: 2012-02-08
    Type: Other