2CH7

Crystal structure of the cytoplasmic domain of a bacterial chemoreceptor from Thermotoga maritima


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.259 
  • R-Value Observed: 0.259 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Reconstruction of the Chemotaxis Receptor-Kinase Assembly

Park, S.Y.Borbat, P.P.Gonzalez-Bonet, G.Bhatnagar, J.Pollard, A.M.Freed, J.H.Bilwes, A.M.Crane, B.R.

(2006) Nat Struct Mol Biol 13: 400

  • DOI: 10.1038/nsmb1085
  • Primary Citation of Related Structures:  
    2CH4, 2CH7

  • PubMed Abstract: 
  • In bacterial chemotaxis, an assembly of transmembrane receptors, the CheA histidine kinase and the adaptor protein CheW processes environmental stimuli to regulate motility. The structure of a Thermotoga maritima receptor cytoplasmic domain defines CheA ...

    In bacterial chemotaxis, an assembly of transmembrane receptors, the CheA histidine kinase and the adaptor protein CheW processes environmental stimuli to regulate motility. The structure of a Thermotoga maritima receptor cytoplasmic domain defines CheA interaction regions and metal ion-coordinating charge centers that undergo chemical modification to tune receptor response. Dimeric CheA-CheW, defined by crystallography and pulsed ESR, positions two CheWs to form a cleft that is lined with residues important for receptor interactions and sized to clamp one receptor dimer. CheW residues involved in kinase activation map to interfaces that orient the CheW clamps. CheA regulatory domains associate in crystals through conserved hydrophobic surfaces. Such CheA self-contacts align the CheW receptor clamps for binding receptor tips. Linking layers of ternary complexes with close-packed receptors generates a lattice with reasonable component ratios, cooperative interactions among receptors and accessible sites for modification enzymes.


    Organizational Affiliation

    Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
METHYL-ACCEPTING CHEMOTAXIS PROTEIN A309Thermotoga maritimaMutation(s): 0 
Find proteins for Q9X0M7 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Explore Q9X0M7 
Go to UniProtKB:  Q9X0M7
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
METHYL-ACCEPTING CHEMOTAXIS PROTEIN B309Thermotoga maritimaMutation(s): 0 
Find proteins for Q9X0M7 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Explore Q9X0M7 
Go to UniProtKB:  Q9X0M7
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PB
Query on PB

Download Ideal Coordinates CCD File 
A
LEAD (II) ION
Pb
RVPVRDXYQKGNMQ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.259 
  • R-Value Observed: 0.259 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 24.6α = 90
b = 99.4β = 90.5
c = 117.2γ = 90
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-18
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance