1B3Q

CRYSTAL STRUCTURE OF CHEA-289, A SIGNAL TRANSDUCING HISTIDINE KINASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.213 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of CheA, a signal-transducing histidine kinase.

Bilwes, A.M.Alex, L.A.Crane, B.R.Simon, M.I.

(1999) Cell 96: 131-141

  • DOI: 10.1016/s0092-8674(00)80966-6
  • Primary Citation of Related Structures:  
    1B3Q

  • PubMed Abstract: 
  • Histidine kinases allow bacteria, plants, and fungi to sense and respond to their environment. The 2.6 A resolution crystal structure of Thermotoga maritima CheA (290-671) histidine kinase reveals a dimer where the functions of dimerization, ATP binding, and regulation are segregated into domains ...

    Histidine kinases allow bacteria, plants, and fungi to sense and respond to their environment. The 2.6 A resolution crystal structure of Thermotoga maritima CheA (290-671) histidine kinase reveals a dimer where the functions of dimerization, ATP binding, and regulation are segregated into domains. The kinase domain is unlike Ser/Thr/Tyr kinases but resembles two ATPases, Gyrase B and Hsp90. Structural analogies within this superfamily suggest that the P1 domain of CheA provides the nucleophilic histidine and activating glutamate for phosphotransfer. The regulatory domain, which binds the homologous receptor-coupling protein CheW, topologically resembles two SH3 domains and provides different protein recognition surfaces at each end. The dimerization domain forms a central four-helix bundle about which the kinase and regulatory domains pivot on conserved hinges to modulate transphosphorylation. Different subunit conformations suggest that relative domain motions link receptor response to kinase activity.


    Organizational Affiliation

    Department of Biology, California Institute of Technology, Pasadena 91125, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (CHEMOTAXIS PROTEIN CHEA)A, B379Thermotoga maritimaMutation(s): 3 
EC: 2.7.3 (PDB Primary Data), 2.7.13.3 (UniProt)
UniProt
Find proteins for Q56310 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore Q56310 
Go to UniProtKB:  Q56310
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HG
Query on HG

Download Ideal Coordinates CCD File 
C [auth A], D [auth B]MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.213 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.8α = 90
b = 126.5β = 95.6
c = 75.1γ = 90
Software Package:
Software NamePurpose
PHASESphasing
MADPHSREFmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
MADPHSREFphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-12-15
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Derived calculations