2ZVZ

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.245 

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:  2ZOV, 2ZVY

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chemotaxis protein motB
A, B
183Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Gene Names: motB
Find proteins for P55892 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  P55892
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.245 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 45.200α = 90.00
b = 46.240β = 90.00
c = 173.700γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
CNSrefinement
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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