2ZVY

Structure of the periplasmic domain of MotB from Salmonella (crystal form II)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Stator assembly and activation mechanism of the flagellar motor by the periplasmic region of MotB

Kojima, S.Imada, K.Sakuma, M.Sudo, Y.Kojima, C.Minamino, T.Homma, M.Namba, K.

(2009) Mol Microbiol 73: 710-718

  • DOI: 10.1111/j.1365-2958.2009.06802.x
  • Primary Citation of Related Structures:  
    2ZVY, 2ZVZ, 2ZOV

  • PubMed Abstract: 
  • Torque generation in the Salmonella flagellar motor is coupled to translocation of H(+) ions through the proton-conducting channel of the Mot protein stator complex. The Mot complex is believed to be anchored to the peptidoglycan (PG) layer by the pu ...

    Torque generation in the Salmonella flagellar motor is coupled to translocation of H(+) ions through the proton-conducting channel of the Mot protein stator complex. The Mot complex is believed to be anchored to the peptidoglycan (PG) layer by the putative peptidoglycan-binding (PGB) domain of MotB. Proton translocation is activated only when the stator is installed into the motor. We report the crystal structure of a C-terminal periplasmic fragment of MotB (MotB(C)) that contains the PGB domain and includes the entire periplasmic region essential for motility. Structural and functional analyses indicate that the PGB domains must dimerize in order to form the proton-conducting channel. Drastic conformational changes in the N-terminal portion of MotB(C) are required both for PG binding and the proton channel activation.


    Organizational Affiliation

    Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-Ku, Nagoya 464-8602, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Chemotaxis protein motBA, B183Salmonella enterica subsp. enterica serovar TyphimuriumMutation(s): 0 
Gene Names: motB
Find proteins for P55892 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Explore P55892 
Go to UniProtKB:  P55892
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.187 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.25α = 90
b = 86.4β = 90
c = 129.91γ = 90
Software Package:
Software NamePurpose
CNSrefinement
ADSCdata collection
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-09-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance