3A0R

Crystal structure of histidine kinase ThkA (TM1359) in complex with response regulator protein TrrA (TM1360)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å
  • R-Value Free: 0.371 
  • R-Value Work: 0.350 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of PAS-linked histidine kinase and the response regulator complex

Yamada, S.Sugimoto, H.Kobayashi, M.Ohno, A.Nakamura, H.Shiro, Y.

(2009) Structure 17: 1333-1344

  • DOI: 10.1016/j.str.2009.07.016
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • We determined the structure of the complex of the sensory histidine kinase (HK) and its cognate response regulator (RR) in the two-component signal transduction system of Thermotoga maritima. This was accomplished by fitting the high-resolution struc ...

    We determined the structure of the complex of the sensory histidine kinase (HK) and its cognate response regulator (RR) in the two-component signal transduction system of Thermotoga maritima. This was accomplished by fitting the high-resolution structures of the isolated HK domains and the RR onto the electron density map (3.8 A resolution) of the HK/RR complex crystal. Based on the structural information, we evaluated the roles of both interdomain and intermolecular interactions in the signal transduction of the cytosolic PAS-linked HK and RR system, in particular the O(2)-sensor FixL/FixJ system. The PAS-sensor domain of HK interacts with the catalytic domain of the same polypeptide chain by creating an interdomain beta sheet. The interaction site between HK and RR, which was confirmed by NMR, is suitable for the intermolecular transfer reaction of the phosphoryl group, indicating that the observed interaction is important for the phosphatase activity of HK that dephosphorylates phospho-RR.


    Related Citations: 
    • The signaling pathway in histidine kinase and the response regulator complex revealed by X-ray crystallography and solution scattering
      Yamada, S.,Akiyama, S.,Sugimoto, H.,Kumita, H.,Ito, K.,Fujisawa, T.,Nakamura, H.,Shiro, Y.
      (2006) J.Mol.Biol. 362: 123


    Organizational Affiliation

    RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sensor protein
A
349Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099)Mutation(s): 0 
Find proteins for Q9X180 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Go to UniProtKB:  Q9X180
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Response regulator
B
116Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099)Mutation(s): 1 
Find proteins for Q9X181 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Go to UniProtKB:  Q9X181
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HG
Query on HG

Download SDF File 
Download CCD File 
A
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å
  • R-Value Free: 0.371 
  • R-Value Work: 0.350 
  • Space Group: I 41 2 2
Unit Cell:
Length (Å)Angle (°)
a = 110.594α = 90.00
b = 110.594β = 90.00
c = 352.508γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
SHARPphasing
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-10-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Refinement description, Version format compliance