2LP4

Solution structure of P1-CheY/P2 complex in bacterial chemotaxis


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Solution structure of a complex of the histidine autokinase CheA with its substrate CheY.

Mo, G.Zhou, H.Kawamura, T.Dahlquist, F.W.

(2012) Biochemistry 51: 3786-3798

  • DOI: 10.1021/bi300147m

  • PubMed Abstract: 
  • In the bacterial chemotaxis two-component signaling system, the histidine-containing phosphotransfer domain (the "P1" domain) of CheA receives a phosphoryl group from the catalytic domain (P4) of CheA and transfers it to the cognate response regulato ...

    In the bacterial chemotaxis two-component signaling system, the histidine-containing phosphotransfer domain (the "P1" domain) of CheA receives a phosphoryl group from the catalytic domain (P4) of CheA and transfers it to the cognate response regulator (RR) CheY, which is docked by the P2 domain of CheA. Phosphorylated CheY then diffuses into the cytoplasm and interacts with the FliM moiety of the flagellar motors, thereby modulating the direction of flagellar rotation. Structures of various histidine phosphotransfer domains (HPt) complexed with their cognate RR domains have been reported. Unlike the Escherichia coli chemotaxis system, however, these systems lack the additional domains dedicated to binding to the response regulators, and the interaction of an HPt domain with an RR domain in the presence of such a domain has not been examined on a structural basis. In this study, we used modern nuclear magnetic resonance techniques to construct a model for the interaction of the E. coli CheA P1 domain (HPt) and CheY (RR) in the presence of the CheY-binding domain, P2. Our results indicate that the presence of P2 may lead to a slightly different relative orientation of the HPt and RR domains versus those seen in such complex structures previously reported.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-9510, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chemotaxis protein CheA
A
225Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: cheA
EC: 2.7.13.3
Find proteins for P07363 (Escherichia coli (strain K12))
Go to UniProtKB:  P07363
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Chemotaxis protein CheY
Y
128Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: cheY
Find proteins for P0AE67 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AE67
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-24
    Type: Initial release