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



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
  • Primary Citation of Related Structures:  
    2LP4

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Chemotaxis protein CheAA225Escherichia coli K-12Mutation(s): 0 
Gene Names: cheAb1888JW1877
EC: 2.7.13.3
Find proteins for P07363 (Escherichia coli (strain K12))
Explore P07363 
Go to UniProtKB:  P07363
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Chemotaxis protein CheYY128Escherichia coli K-12Mutation(s): 0 
Gene Names: cheYb1882JW1871
Find proteins for P0AE67 (Escherichia coli (strain K12))
Explore P0AE67 
Go to UniProtKB:  P0AE67
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2LP4 Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

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