4TMY

CHEY FROM THERMOTOGA MARITIMA (MG-IV)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Work: 0.179 

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:  
    3TMY, 4TMY, 2TMY, 1TMY

  • 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: 
    • 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
    • Crystal Structure of Escherichia Coli Chey Refined at 1.7-A Resolution
      Volz, K., Matsumura, P.
      (1991) J Biol Chem 266: 15511

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CHEY PROTEINAB120Thermotoga maritimaMutation(s): 0 
Gene Names: cheY
Find proteins for Q56312 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Explore Q56312 
Go to UniProtKB:  Q56312
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Work: 0.179 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.066α = 90
b = 50.066β = 90
c = 186.29γ = 90
Software Package:
Software NamePurpose
AMoREphasing
TNTrefinement
SDMSdata reduction
SDMSdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-12-03
    Type: Initial release
  • Version 1.1: 2008-03-25
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance