1TMY

CHEY FROM THERMOTOGA MARITIMA (APO-I)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structures of CheY from Thermotoga maritima do not support conventional explanations for the structural basis of enhanced thermostability.

Usher, K.C.de la Cruz, A.F.Dahlquist, F.W.Swanson, R.V.Simon, M.I.Remington, S.J.

(1998) Protein Sci. 7: 403-412

  • DOI: 10.1002/pro.5560070221
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The crystal structure of CheY protein from Thermotoga maritima has been determined in four crystal forms with and without Mg++ bound, at up to 1.9 A resolution. Structural comparisons with CheY from Escherichia coli shows substantial similarity in th ...

    The crystal structure of CheY protein from Thermotoga maritima has been determined in four crystal forms with and without Mg++ bound, at up to 1.9 A resolution. Structural comparisons with CheY from Escherichia coli shows substantial similarity in their folds, with some concerted changes propagating away from the active site that suggest how phosphorylated CheY, a signal transduction protein in bacterial chemotaxis, is recognized by its targets. A highly conserved segment of the protein (the "y-turn loop," residues 55-61), previously suggested to be a rigid recognition determinant, is for the first time seen in two alternative conformations in the different crystal structures. Although CheY from Thermotoga has much higher thermal stability than its mesophilic counterparts, comparison of structural features previously proposed to enhance thermostability such as hydrogen bonds, ion pairs, compactness, and hydrophobic surface burial would not suggest it to be so.


    Related Citations: 
    • Crystal Structure of Escherichia Coli Chey Refined at 1.7-A Resolution
      Volz, K.,Matsumura, P.
      (1991) J.Biol.Chem. 266: 15511
    • Magnesium Binding to the Bacterial Chemotaxis Protein Chey Results in Large Conformational Changes Involving its Functional Surface
      Bellsolell, L.,Prieto, J.,Serrano, L.,Coll, M.
      (1994) J.Mol.Biol. 238: 489
    • Erratum. Magnesium Binding to the Bacterial Chemotaxis Protein Chey Results in Large Conformational Changes Involving its Functional Surface
      Bellsolell, L.,Prieto, J.,Serrano, L.,Coll, M.
      (1994) J.Mol.Biol. 242: 103


    Organizational Affiliation

    Institute of Molecular Biology and Department of Chemistry, University of Oregon, Eugene 97403, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHEY PROTEIN
A
120Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099)Mutation(s): 0 
Gene Names: cheY
Find proteins for Q56312 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Go to UniProtKB:  Q56312
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Work: 0.186 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 32.040α = 90.00
b = 53.950β = 95.56
c = 34.160γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement
RSSphasing
OSCILLdata reduction
RSSmodel building
SCALEdata scaling
R-AXISdata scaling
R-AXISdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-11-19
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance