4QJB

Crystal structure of the sugar phosphatase PfHAD1 from Plasmodium falciparum


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A sugar phosphatase regulates the methylerythritol phosphate (MEP) pathway in malaria parasites.

Guggisberg, A.M.Park, J.Edwards, R.L.Kelly, M.L.Hodge, D.M.Tolia, N.H.Odom, A.R.

(2014) Nat Commun 5: 4467-4467

  • DOI: 10.1038/ncomms5467

  • PubMed Abstract: 
  • Isoprenoid biosynthesis through the methylerythritol phosphate (MEP) pathway generates commercially important products and is a target for antimicrobial drug development. MEP pathway regulation is poorly understood in microorganisms. Here we employ a ...

    Isoprenoid biosynthesis through the methylerythritol phosphate (MEP) pathway generates commercially important products and is a target for antimicrobial drug development. MEP pathway regulation is poorly understood in microorganisms. Here we employ a forward genetics approach to understand MEP pathway regulation in the malaria parasite, Plasmodium falciparum. The antimalarial fosmidomycin inhibits the MEP pathway enzyme deoxyxylulose 5-phosphate reductoisomerase (DXR). Fosmidomycin-resistant P. falciparum are enriched for changes in the PF3D7_1033400 locus (hereafter referred to as PfHAD1), encoding a homologue of haloacid dehalogenase (HAD)-like sugar phosphatases. We describe the structural basis for loss-of-function PfHAD1 alleles and find that PfHAD1 dephosphorylates a variety of sugar phosphates, including glycolytic intermediates. Loss of PfHAD1 is required for fosmidomycin resistance. Parasites lacking PfHAD1 have increased MEP pathway metabolites, particularly the DXR substrate, deoxyxylulose 5-phosphate. PfHAD1 therefore controls substrate availability to the MEP pathway. Because PfHAD1 has homologues in plants and bacteria, other HAD proteins may be MEP pathway regulators.


    Organizational Affiliation

    Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA.,Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA.,Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Haloacid dehalogenase-like hydrolase
A, B
296Plasmodium falciparum (isolate 3D7)Mutation(s): 0 
Find proteins for Q8IJ74 (Plasmodium falciparum (isolate 3D7))
Go to UniProtKB:  Q8IJ74
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.202 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 77.900α = 90.00
b = 43.800β = 101.10
c = 83.900γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata reduction
XDSdata scaling
PHENIXrefinement
Blu-Icedata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2014-06-03 
  • Released Date: 2014-07-02 
  • Deposition Author(s): Tolia, N.H., Park, J.

Revision History 

  • Version 1.0: 2014-07-02
    Type: Initial release
  • Version 1.1: 2014-08-13
    Type: Database references