3OS6

Crystal structure of putative 2,3-dihydroxybenzoate-specific isochorismate synthase, DhbC from Bacillus anthracis.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of isochorismate synthase DhbC from Bacillus anthracis.

Domagalski, M.J.Tkaczuk, K.L.Chruszcz, M.Skarina, T.Onopriyenko, O.Cymborowski, M.Grabowski, M.Savchenko, A.Minor, W.

(2013) Acta Crystallogr Sect F Struct Biol Cryst Commun 69: 956-961

  • DOI: 10.1107/S1744309113021246
  • Primary Citation of Related Structures:  
    3OS6

  • PubMed Abstract: 
  • The isochorismate synthase DhbC from Bacillus anthracis is essential for the biosynthesis of the siderophore bacillibactin by this pathogenic bacterium. The structure of the selenomethionine-substituted protein was determined to 2.4 Å resolution usin ...

    The isochorismate synthase DhbC from Bacillus anthracis is essential for the biosynthesis of the siderophore bacillibactin by this pathogenic bacterium. The structure of the selenomethionine-substituted protein was determined to 2.4 Å resolution using single-wavelength anomalous diffraction. B. anthracis DhbC bears the strongest resemblance to the Escherichia coli isochorismate synthase EntC, which is involved in the biosynthesis of another siderophore, namely enterobactin. Both proteins adopt the characteristic fold of other chorismate-utilizing enzymes, which are involved in the biosynthesis of various products, including siderophores, menaquinone and tryptophan. The conservation of the active-site residues, as well as their spatial arrangement, suggests that these enzymes share a common Mg(2+)-dependent catalytic mechanism.


    Organizational Affiliation

    Department of Molecular Physiology and Biological Physics, University of Virginia, 1340 Jefferson Park Avenue, Jordan Hall, Charlottesville, VA 22908, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Isochorismate synthase DhbCABCD399Bacillus anthracis str. AmesMutation(s): 0 
Gene Names: BAS2205BA_2369dhbCGBAA2369GBAA_2369
EC: 5.4.4.2
Find proteins for Q81QQ0 (Bacillus anthracis)
Explore Q81QQ0 
Go to UniProtKB:  Q81QQ0
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
15P
Query on 15P

Download CCD File 
A, D
POLYETHYLENE GLYCOL (N=34)
C69 H140 O35
VUYXVWGKCKTUMF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A, B, C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, B, C, D
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,B,C,DL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 201.389α = 90
b = 201.389β = 90
c = 201.389γ = 90
Software Package:
Software NamePurpose
HKL-3000data collection
HKL-3000phasing
SHELXEmodel building
MLPHAREphasing
DMmodel building
RESOLVEmodel building
ARP/wARPmodel building
CCP4model building
REFMACrefinement
Cootmodel building
HKL-3000data reduction
HKL-3000data scaling
DMphasing
RESOLVEphasing
CCP4phasing

Structure Validation

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Entry History 

Revision History 

  • Version 1.0: 2010-10-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2013-09-11
    Changes: Database references