3O1J

Crystal Structure of the TorS sensor domain - TorT complex in the absence of isopropanol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.226 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

An asymmetry-to-symmetry switch in signal transmission by the histidine kinase receptor for TMAO.

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

(2012) Structure 20: 729-741

  • DOI: 10.1016/j.str.2012.02.021
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The osmoregulator trimethylamine-N-oxide (TMAO), commonplace in aquatic organisms, is used as the terminal electron acceptor for respiration in many bacterial species. The TMAO reductase (Tor) pathway for respiratory catalysis is controlled by a rece ...

    The osmoregulator trimethylamine-N-oxide (TMAO), commonplace in aquatic organisms, is used as the terminal electron acceptor for respiration in many bacterial species. The TMAO reductase (Tor) pathway for respiratory catalysis is controlled by a receptor system that comprises the TMAO-binding protein TorT, the sensor histidine kinase TorS, and the response regulator TorR. Here we study the TorS/TorT sensor system to gain mechanistic insight into signaling by histidine kinase receptors. We determined crystal structures for complexes of TorS sensor domains with apo TorT and with TorT (TMAO); we characterized TorS sensor associations with TorT in solution; we analyzed the thermodynamics of TMAO binding to TorT-TorS complexes; and we analyzed in vivo responses to TMAO through the TorT/TorS/TorR system to test structure-inspired hypotheses. TorS-TorT(apo) is an asymmetric 2:2 complex that binds TMAO with negative cooperativity to form a symmetric active kinase.


    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 TorS
A, B
277Vibrio 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
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Periplasmic protein TorT
C, D
304Vibrio parahaemolyticus serotype O3:K6 (strain RIMD 2210633)Mutation(s): 0 
Find proteins for Q87ID2 (Vibrio parahaemolyticus serotype O3:K6 (strain RIMD 2210633))
Go to UniProtKB:  Q87ID2
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IPA
Query on IPA

Download SDF File 
Download CCD File 
C, D
ISOPROPYL ALCOHOL
2-PROPANOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.226 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 78.390α = 90.00
b = 127.669β = 90.00
c = 306.534γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
HKL-2000data reduction
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-12-21
    Type: Initial release
  • Version 1.1: 2012-12-26
    Type: Database references
  • Version 1.2: 2013-03-27
    Type: Other