3I9Y

Crystal structure of the V. parahaemolyticus histidine kinase sensor TorS sensor domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.16 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural analysis of sensor domains from the TMAO-responsive histidine kinase receptor TorS

Moore, J.O.Hendrickson, W.A.

(2009) Structure 17: 1195-1204

  • DOI: 10.1016/j.str.2009.07.015
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Histidine kinase receptors respond to diverse signals and mediate signal transduction across the plasma membrane in all prokaryotes and certain eukaryotes. Each receptor is part of a two-component system that regulates a particular cellular process. ...

    Histidine kinase receptors respond to diverse signals and mediate signal transduction across the plasma membrane in all prokaryotes and certain eukaryotes. Each receptor is part of a two-component system that regulates a particular cellular process. Organisms that use trimethylamine-N-oxide (TMAO) as a terminal electron acceptor typically control their anaerobic respiration through the TMAO reductase (Tor) pathway, which the TorS histidine kinase activates when sensing TMAO in the environment. We have determined crystal structures for the periplasmic sensor domains of TorS receptors from Escherichia coli and Vibrio parahaemolyticus. TorS sensor domains have a novel fold consisting of a membrane-proximal right-handed four-helical bundle and a membrane-distal left-handed four-helical bundle, but conformational dispositions differ significantly in the two structures. Isolated TorS sensor domains dimerize in solution; and from comparisons with dimeric NarX and Tar sensors, we postulate that signaling through TorS dimers involves a piston-type displacement between helices.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sensor protein
A
276Vibrio parahaemolyticus serotype O3:K6 (strain RIMD 2210633)Mutation(s): 0 
EC: 2.7.13.3
Find proteins for Q87ID1 (Vibrio parahaemolyticus serotype O3:K6 (strain RIMD 2210633))
Go to UniProtKB:  Q87ID1
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.16 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.222 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 149.880α = 90.00
b = 149.880β = 90.00
c = 42.712γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
SOLVEphasing
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-10-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description