Crystal Structure of Human Neuron Specific Enolase at 1.8 angstrom

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.206 

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This is version 1.4 of the entry. See complete history


Expression, Purification and the 1.8 A Resolution Crystal Structure of Human Neuron Specific Enolase

Chai, G.Brewer, J.Lovelace, L.Aoki, T.Minor, W.Lebioda, L.

(2004) J Mol Biol 341: 1015-1021

  • DOI: https://doi.org/10.1016/j.jmb.2004.05.068
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Human neuron-specific enolase (NSE) or isozyme gamma has been expressed with a C-terminal His-tag in Escherichia coli. The enzyme has been purified, crystallized and its crystal structure determined. In the crystals the enzyme forms the asymmetric complex NSE x Mg2 x SO4/NSE x Mg x Cl, where "/" separates the dimer subunits. The subunit that contains the sulfate (or phosphate) ion and two magnesium ions is in the closed conformation observed in enolase complexes with the substrate or its analogues; the other subunit is in the open conformation observed in enolase subunits without bound substrate or analogues. This indicates negative cooperativity for ligand binding between subunits. Electrostatic charge differences between isozymes alpha and gamma, -19 at physiological pH, are concentrated in the regions of the molecular surface that are negatively charged in alpha, i.e. surface areas negatively charged in alpha are more negatively charged in gamma, while areas that are neutral or positively charged tend to be charge-conserved.

  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Gamma enolase
A, B
439Homo sapiensMutation(s): 0 
Gene Names: ENO2
UniProt & NIH Common Fund Data Resources
Find proteins for P09104 (Homo sapiens)
Explore P09104 
Go to UniProtKB:  P09104
PHAROS:  P09104
GTEx:  ENSG00000111674 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP09104
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.206 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.579α = 90
b = 119.708β = 90
c = 68.216γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-09-21
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-04-13
    Changes: Database references, Derived calculations, Structure summary
  • Version 1.4: 2023-08-23
    Changes: Data collection, Refinement description