3QTP

Crystal Structure Analysis of Entamoeba histolytica Enolase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.153 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure analysis of Entamoeba histolytica enolase.

Schulz, E.C.Tietzel, M.Tovy, A.Ankri, S.Ficner, R.

(2011) Acta Crystallogr.,Sect.D 67: 619-627

  • DOI: 10.1107/S0907444911016544

  • PubMed Abstract: 
  • Entamoeba histolytica enolase (EhENO) reversibly interconverts 2-phosphoglyceric acid (2-PGA) and phosphoenolpyruvic acid (PEP). The crystal structure of the homodimeric EhENO is presented at a resolution of 1.9 Å. In the crystal structure EhENO pres ...

    Entamoeba histolytica enolase (EhENO) reversibly interconverts 2-phosphoglyceric acid (2-PGA) and phosphoenolpyruvic acid (PEP). The crystal structure of the homodimeric EhENO is presented at a resolution of 1.9 Å. In the crystal structure EhENO presents as an asymmetric dimer with one active site in the open conformation and the other active site in the closed conformation. Interestingly, both active sites contain a copurified 2-PGA molecule. While the 2-PGA molecule in the closed active site closely resembles the conformation known from other enolase-2-PGA complexes, the conformation in the open active site is different. Here, 2-PGA is shifted approximately 1.6 Å away from metal ion I, most likely representing a precatalytic situation.


    Organizational Affiliation

    Abteilung für Molekulare Strukturbiologie, Institut für Mikrobiologie und Genetik, Georg-August-Universität Göttingen, Justus-von-Liebig Weg, Germany. eschulz1@gwdg.de




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Enolase 1
A, B
441Entamoeba histolyticaMutation(s): 0 
Gene Names: ENL-1
EC: 4.2.1.11
Find proteins for P51555 (Entamoeba histolytica)
Go to UniProtKB:  P51555
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
2PG
Query on 2PG

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Download CCD File 
A, B
2-PHOSPHOGLYCERIC ACID
C3 H7 O7 P
GXIURPTVHJPJLF-UWTATZPHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.153 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 64.420α = 90.00
b = 92.620β = 90.00
c = 160.580γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
DNAdata collection
PHENIXrefinement
XDSdata reduction
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-07-13
    Type: Initial release