3D8H

Crystal structure of phosphoglycerate mutase from Cryptosporidium parvum, cgd7_4270


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Characterization of a new phosphatase from Plasmodium.

Hills, T.Srivastava, A.Ayi, K.Wernimont, A.K.Kain, K.Waters, A.P.Hui, R.Pizarro, J.C.

(2011) Mol.Biochem.Parasitol. 179: 69-79

  • DOI: 10.1016/j.molbiopara.2011.06.001
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Plasmodium falciparum malaria is the most important parasitic disease worldwide, responsible for an estimated 1 million deaths annually. Two P. falciparum genes code for putative phosphoglycerate mutases (PGMases), a widespread protein group characte ...

    Plasmodium falciparum malaria is the most important parasitic disease worldwide, responsible for an estimated 1 million deaths annually. Two P. falciparum genes code for putative phosphoglycerate mutases (PGMases), a widespread protein group characterized by the involvement of histidine residues in their catalytic mechanism. PGMases are responsible for the interconversion between 2 and 3-phosphoglycerate, an intermediate step in the glycolysis pathway. We have determined the crystal structures of one of the P. falciparum's PGMases (PfPGM2) and a functionally distinct phosphoglycerate mutase from Cryptosporidium parvum, a related apicomplexan parasite. We performed sequence and structural comparisons between the two structures, another P. falciparum enzyme (PfPGM1) and several other PGM family members from other organisms. The comparisons revealed a distinct conformation of the catalytically active residues not seen in previously determined phosphoglycerate mutase structures. Furthermore, characterization of their enzymatic activities revealed contrasting behaviors between the PfPGM2 and the classical cofactor-dependent PGMase from C. parvum, clearly establishing PfPGM2 as a phosphatase with a residual level of mutase activity. Further support for this function attribution was provided by our structural comparison with previously characterized PGM family members. Genetic characterization of PGM2 in the rodent parasite Plasmodium berghei indicated that the protein might be essential to blood stage asexual growth, and a GFP tagged allele is expressed in both blood and zygote ookinete development and located in the cytoplasm. The P. falciparum PGM2 is either an enzyme implicated in the phosphate metabolism of the parasite or a regulator of its life cycle.


    Organizational Affiliation

    The SGC (Structural Genomics Consortium), University of Toronto, Toronto, ON, Canada. juan.pizarro@utoronto.ca




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glycolytic phosphoglycerate mutase
A, B
267Cryptosporidium parvum (strain Iowa II)Mutation(s): 0 
EC: 5.4.2.11
Find proteins for Q5CXZ9 (Cryptosporidium parvum (strain Iowa II))
Go to UniProtKB:  Q5CXZ9
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.231 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 52.248α = 90.00
b = 158.365β = 90.00
c = 140.249γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
REFMACrefinement
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2008-07-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Source and taxonomy, Version format compliance
  • Version 1.2: 2011-08-24
    Type: Database references
  • Version 1.3: 2011-09-07
    Type: Database references
  • Version 1.4: 2017-10-25
    Type: Refinement description