3S0Y

The crystal structure of the periplasmic domain of MotB (residues 64-256).


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.180 

wwPDB Validation 3D Report Full Report



Literature

Role of the MotB linker in the assembly and activation of the bacterial flagellar motor.

O'Neill, J.Xie, M.Hijnen, M.Roujeinikova, A.

(2011) Acta Crystallogr D Biol Crystallogr 67: 1009-1016

  • DOI: 10.1107/S0907444911041102
  • Primary Citation of Related Structures:  
    3S0H, 3S02, 3S03, 3S06, 3S0Y, 3S0W

  • PubMed Abstract: 
  • Bacterial flagella are driven by an ion influx through the peptidoglycan (PG)-tethered MotA/MotB stator. Stator precomplexes assemble in the membrane and remain inactive until they incorporate into the motor, upon which MotA/MotB changes conformation ...

    Bacterial flagella are driven by an ion influx through the peptidoglycan (PG)-tethered MotA/MotB stator. Stator precomplexes assemble in the membrane and remain inactive until they incorporate into the motor, upon which MotA/MotB changes conformation. The nature of this change and the mechanism of inhibition of the PG-binding and ion-conducting activities of the precomplexes are unknown. Here, the structural analysis of a series of N-terminally truncated MotB fragments is presented, the mechanism of inhibition by the linker is identified and the structural basis for the formation of the PG-binding-competent open-channel MotA/MotB conformation via a mechanism that entails linker unfolding and rotational displacement of MotB transmembrane helices is uncovered.


    Related Citations: 
    • Cloning, purification and crystallization of MotB, a stator component of the proton-driven bacterial flagellar motor.
      O'Neill, J., Roujeinikova, A.
      (2008) Acta Crystallogr Sect F Struct Biol Cryst Commun 64: 561

    Organizational Affiliation

    Manchester Interdisciplinary Biocentre, University of Manchester, 131 Princess Street, Manchester M1 7DN, England.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Motility protein BA, B193Helicobacter pylori 26695Mutation(s): 0 
Gene Names: HP_0816motB
Find proteins for P56427 (Helicobacter pylori (strain ATCC 700392 / 26695))
Explore P56427 
Go to UniProtKB:  P56427
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.180 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.21α = 90
b = 75.21β = 90
c = 124.707γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-03-14
    Type: Initial release