3QTP

Crystal Structure Analysis of Entamoeba histolytica Enolase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.155 

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Ligand Structure Quality Assessment 


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 D Biol Crystallogr 67: 619-627

  • DOI: https://doi.org/10.1107/S0907444911016544
  • Primary Citation of Related Structures:  
    3QTP

  • 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 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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Enolase 1
A, B
441Entamoeba histolyticaMutation(s): 0 
Gene Names: ENL-1
EC: 4.2.1.11
UniProt
Find proteins for P51555 (Entamoeba histolytica (strain ATCC 30459 / HM-1:IMSS / ABRM))
Explore P51555 
Go to UniProtKB:  P51555
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP51555
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
2PG
Query on 2PG

Download Ideal Coordinates CCD File 
C [auth A],
H [auth B]
2-PHOSPHOGLYCERIC ACID
C3 H7 O7 P
GXIURPTVHJPJLF-UWTATZPHSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
F [auth A]
I [auth B]
J [auth B]
D [auth A],
E [auth A],
F [auth A],
I [auth B],
J [auth B],
K [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
MG
Query on MG

Download Ideal Coordinates CCD File 
G [auth A],
L [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.155 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.42α = 90
b = 92.62β = 90
c = 160.58γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
DNAdata collection
XDSdata reduction
PHENIXrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

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