Crystal Structure of E. coli EntA, a 2,3-dihydrodihydroxy benzoate dehydrogenase

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.186 

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Determination of the crystal structure of EntA, a 2,3-dihydro-2,3-dihydroxybenzoic acid dehydrogenase from Escherichia coli.

Sundlov, J.A.Garringer, J.A.Carney, J.M.Reger, A.S.Drake, E.J.Duax, W.L.Gulick, A.M.

(2006) Acta Crystallogr D Biol Crystallogr 62: 734-740

  • DOI: https://doi.org/10.1107/S0907444906015824
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The Escherichia coli enterobactin synthetic cluster is composed of six proteins, EntA-EntF, that form the enterobactin molecule from three serine molecules and three molecules of 2,3-dihydroxybenzoic acid (DHB). EntC, EntB and EntA catalyze the three-step synthesis of DHB from chorismate. EntA is a member of the short-chain oxidoreductase (SCOR) family of proteins and catalyzes the final step in DHB synthesis, the NAD+-dependent oxidation of 2,3-dihydro-2,3-dihydroxybenzoic acid to DHB. The structure of EntA has been determined by multi-wavelength anomalous dispersion methods. Here, the 2.0 A crystal structure of EntA in the unliganded form is presented. Analysis of the structure in light of recent structural and bioinformatic analysis of other members of the SCOR family provides insight into the residues involved in cofactor and substrate binding.

  • Organizational Affiliation

    Hauptman-Woodward Medical Research Institute, Buffalo, NY, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
2,3-dihydro-2,3-dihydroxybenzoate dehydrogenaseA [auth X]250Escherichia coliMutation(s): 0 
Gene Names: entA
Find proteins for P15047 (Escherichia coli (strain K12))
Explore P15047 
Go to UniProtKB:  P15047
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP15047
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.186 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.585α = 90
b = 66.643β = 90
c = 109.732γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-06-27
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2014-11-12
    Changes: Structure summary
  • Version 1.4: 2017-10-18
    Changes: Refinement description
  • Version 1.5: 2024-02-14
    Changes: Data collection, Database references