4IGA

The crystal structure of an activated Thermotoga maritima CheY with N-terminal region of FliM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.230 

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Literature

The crystal structure of an activated Thermotoga maritima CheY with N-terminal region of FliM.

Ahn, D.R.Song, H.Kim, J.Lee, S.Park, S.Y.

(2013) Int J Biol Macromol 54: 76-83

  • DOI: https://doi.org/10.1016/j.ijbiomac.2012.12.003
  • Primary Citation of Related Structures:  
    4IGA

  • PubMed Abstract: 

    In bacterial chemotaxis, the levels of phosphorylated CheY in association with FliM determine the sense of the flagella rotation, which in turn controls the bacterial swimming behavior. We report the 1.7Å resolution crystallographic structure of the Thermotoga maritima BeF(3)(-)-activated CheY in complex with the CheY-binding N-terminal region of FliM. Analysis of the structure in comparison to the previously reported Escherichia coli counterpart reveals that similar regions of H4-β5-H5 in CheY and the helix in FliM are used for the complex interfaces. Our structure also indicates that the correlated movement of Phe101 and Ser82 (F-S coupling) in T. maritima CheY upon phosphorylation and FliM binding, parallels that of Tyr106 and Thr87 (Y-T coupling) demonstrated in E. coli CheY. Furthermore, significant displacements of the β4-H4 loop in both CheYs impose a crucial role of this loop, which can be related to flagellar switch component binding or to propagating changes that is necessary during the CheY-mediated reversal of the motor.


  • Organizational Affiliation

    Center for Theragnosis, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Chemotaxis protein CheY123Thermotoga maritima MSB8Mutation(s): 0 
Gene Names: cheYTM_0700
UniProt
Find proteins for Q56312 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore Q56312 
Go to UniProtKB:  Q56312
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ56312
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Flagellar motor switch protein FliM20Thermotoga maritima MSB8Mutation(s): 0 
UniProt
Find proteins for Q9WZE6 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore Q9WZE6 
Go to UniProtKB:  Q9WZE6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9WZE6
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.230 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.802α = 90
b = 92.802β = 90
c = 31.596γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-04-24
    Type: Initial release