Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 26.47 kDa 
• Atom Count: 1657 
• Modelled Residue Count: 212 
• Deposited Residue Count: 250 
• Unique protein chains: 1

2FWM

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

• PDB DOI: 10.2210/pdb2FWM/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2006-02-02 Released: 2006-06-27 
• Deposition Author(s): Gulick, A.M., Duax, W.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.214 
• R-Value Work: 0.186 

Literature

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

• PubMed: 16790929 
• DOI: 10.1107/S0907444906015824
• Primary Citation of Related Structures:  
  2FWM


• 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
2,3-dihydro-2,3-dihydroxybenzoate dehydrogenase	A [auth X]	250	Escherichia coli	Mutation(s): 0  Gene Names: entA EC: 1.3.1.28
UniProt
Find proteins for P15047 (Escherichia coli (strain K12)) Explore P15047  Go to UniProtKB:  P15047

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• 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 = 58.585	α = 90
b = 66.643	β = 90
c = 109.732	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SnB	phasing
RESOLVE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-02-02 
• Released Date: 2006-06-27 
Deposition Author(s): Gulick, A.M., Duax, W.L.

Revision History  

• 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