1EAY

CHEY-BINDING (P2) DOMAIN OF CHEA IN COMPLEX WITH CHEY FROM ESCHERICHIA COLI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Two binding modes reveal flexibility in kinase/response regulator interactions in the bacterial chemotaxis pathway.

McEvoy, M.M.Hausrath, A.C.Randolph, G.B.Remington, S.J.Dahlquist, F.W.

(1998) Proc.Natl.Acad.Sci.USA 95: 7333-7338


  • PubMed Abstract: 
  • The crystal structure at 2.0-A resolution of the complex of the Escherichia coli chemotaxis response regulator CheY and the phosphoacceptor-binding domain (P2) of the kinase CheA is presented. The binding interface involves the fourth and fifth helic ...

    The crystal structure at 2.0-A resolution of the complex of the Escherichia coli chemotaxis response regulator CheY and the phosphoacceptor-binding domain (P2) of the kinase CheA is presented. The binding interface involves the fourth and fifth helices and fifth beta-strand of CheY and both helices of P2. Surprisingly, the two heterodimers in the asymmetric unit have two different binding modes involving the same interface, suggesting some flexibility in the binding regions. Significant conformational changes have occurred in CheY compared with previously determined unbound structures. The active site of CheY is exposed by the binding of the kinase domain, possibly to enhance phosphotransfer from CheA to CheY. The conformational changes upon complex formation as well as the observation that there are two different binding modes suggest that the plasticity of CheY is an essential feature of response regulator function.


    Organizational Affiliation

    Institute of Molecular Biology, University of Oregon, Eugene, OR 97403, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHEY
A, B
128Escherichia coli (strain K12)Gene Names: cheY
Find proteins for P0AE67 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AE67
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CHEA
C, D
74Escherichia coli (strain K12)Gene Names: cheA
EC: 2.7.13.3
Find proteins for P07363 (Escherichia coli (strain K12))
Go to UniProtKB:  P07363
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.217 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 54.500α = 90.00
b = 64.200β = 90.00
c = 158.000γ = 90.00
Software Package:
Software NamePurpose
RSSphasing
SCALEPACKdata scaling
PROTEINphasing
PROTEINmodel building
DENZOdata reduction
SIGMAAmodel building
RSSmodel building
TNTrefinement
SIGMAAphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-07-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance