1JBE

1.08 A Structure of apo-Chey reveals meta-active conformation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.08 Å
  • R-Value Free: 0.152 
  • R-Value Work: 0.121 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A distinct meta-active conformation in the 1.1-A resolution structure of wild-type ApoCheY.

Simonovic, M.Volz, K.

(2001) J.Biol.Chem. 276: 28637-28640

  • DOI: 10.1074/jbc.C100295200

  • PubMed Abstract: 
  • CheY is the best characterized member of the response regulator superfamily, and as such it has become the principal model for understanding the initial molecular mechanisms of signaling in two-component systems. Normal signaling by response regulato ...

    CheY is the best characterized member of the response regulator superfamily, and as such it has become the principal model for understanding the initial molecular mechanisms of signaling in two-component systems. Normal signaling by response regulators requires phosphorylation, in combination with an activation mechanism whose conformational effects are not completely understood. CheY activation involves three events, phosphorylation, a conformational change in the beta(4)--alpha(4) loop, and a rotational restriction of the side chain of tyrosine 106. An outstanding question concerns the nature of an active conformation in the apoCheY population. The details of this 1.08-A resolution crystal structure of wild-type apoCheY shows the beta(4)--alpha(4) loop in two distinctly different conformations that sterically correlate with the two rotameric positions of the tyrosine 106 side chain. One of these conformational states of CheY is the inactive form, and we propose that the other is a meta-active form, responsible for the active properties seen in apoCheY.


    Related Citations: 
    • Atomic Resolution Structure of a Succinimide Intermediate in E. coli CheY
      Simonovic, M.,Volz, K.
      (2002) J.Mol.Biol. 322: 663


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Illinois at Chicago, Chicago, Illinois 60612-7334, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chemotaxis protein CHEY
A
128Escherichia coli (strain K12)Gene Names: cheY
Find proteins for P0AE67 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AE67
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SNN
Query on SNN
A
L-PEPTIDE LINKINGC4 H6 N2 O2ASN
ACY
Query on ACY
A
NON-POLYMERC2 H4 O2

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.08 Å
  • R-Value Free: 0.152 
  • R-Value Work: 0.121 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 45.122α = 90.00
b = 46.652β = 90.00
c = 53.120γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
CNSrefinement
SCALEPACKdata scaling
ADSCdata collection
DENZOdata reduction
SHELXL-97refinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-08-08
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance