2W48

Crystal structure of the Full-length Sorbitol Operon Regulator SorC from Klebsiella pneumoniae


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Full-Length Sorbitol Operon Regulator Sorc from Klebsiella Pneumoniae: Structural Evidence for a Novel Transcriptional Regulation Mechanism.

De Sanctis, D.Mcvey, C.E.Enguita, F.J.Carrondo, M.A.

(2009) J.Mol.Biol. 387: 759

  • DOI: 10.1016/j.jmb.2009.02.017

  • PubMed Abstract: 
  • SorC transcriptional regulators are common regulators in prokaryotes. Here we report the first crystal structure of a full-length SorC, the sorbitol operon regulator SorC from Klebsiella pneumoniae, the prototype of its family. SorC was found to be a ...

    SorC transcriptional regulators are common regulators in prokaryotes. Here we report the first crystal structure of a full-length SorC, the sorbitol operon regulator SorC from Klebsiella pneumoniae, the prototype of its family. SorC was found to be a homotetramer (which seems to be the biologically active form) that is able to recognize its DNA operator. The tetramer can be regarded as a dimer of dimers, with each dimer being composed of two identical subunits in different conformations. The DNA-binding domains divergently protrude from the core of the tetramer, suggesting that SorC may bind its operator in two distinct regions. The sugar-binding domain presents the same fold identified in members of the SorC family that shows some features identified as specific for sugar recognition. An in silico analysis shows that the localization of the putative sugar-binding site is close to the dimeric interfaces. This supports the proposal of a new mechanism of transcriptional regulation that is in complete agreement with functional studies recently reported on a protein belonging to the same family.


    Organizational Affiliation

    Macromolecular Crystallography, European Synchrotron Radiation Facility, Grenoble Cedex, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SORBITOL OPERON REGULATOR
A, B, C, D
315Klebsiella pneumoniaeMutation(s): 0 
Gene Names: sorC
Find proteins for P37078 (Klebsiella pneumoniae)
Go to UniProtKB:  P37078
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A, D
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MRD
Query on MRD

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Download CCD File 
B
(4R)-2-METHYLPENTANE-2,4-DIOL
C6 H14 O2
SVTBMSDMJJWYQN-RXMQYKEDSA-N
 Ligand Interaction
MPD
Query on MPD

Download SDF File 
Download CCD File 
A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.218 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 91.670α = 90.00
b = 113.330β = 90.00
c = 184.150γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-05-05
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance