2VDD

Crystal Structure of the Open State of TolC Outer Membrane Component of Mutlidrug Efflux Pumps


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.239 

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This is version 1.3 of the entry. See complete history


Literature

Assembly and Channel Opening in a Bacterial Drug Efflux Machine.

Bavro, V.N.Pietras, Z.Furnham, N.Perez-Cano, L.Fernandez-Recio, J.Pei, X.Y.Truer, R.Misra, R.Luisi, B.

(2008) Mol Cell 30: 114

  • DOI: 10.1016/j.molcel.2008.02.015
  • Primary Citation of Related Structures:  
    2VDD, 2VDE

  • PubMed Abstract: 
  • Drugs and certain proteins are transported across the membranes of Gram-negative bacteria by energy-activated pumps. The outer membrane component of these pumps is a channel that opens from a sealed resting state during the transport process. We describe two crystal structures of the Escherichia coli outer membrane protein TolC in its partially open state ...

    Drugs and certain proteins are transported across the membranes of Gram-negative bacteria by energy-activated pumps. The outer membrane component of these pumps is a channel that opens from a sealed resting state during the transport process. We describe two crystal structures of the Escherichia coli outer membrane protein TolC in its partially open state. Opening is accompanied by the exposure of three shallow intraprotomer grooves in the TolC trimer, where our mutagenesis data identify a contact point with the periplasmic component of a drug efflux pump, AcrA. We suggest that the assembly of multidrug efflux pumps is accompanied by induced fit of TolC driven mainly by accommodation of the periplasmic component.


    Organizational Affiliation

    Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
OUTER MEMBRANE PROTEIN TOLCA, B, C460Escherichia coli K-12Mutation(s): 3 
Gene Names: tolCcolE1-imtcBmukArefItocweeAb3035JW5503
Membrane Entity: Yes 
UniProt
Find proteins for P02930 (Escherichia coli (strain K12))
Explore P02930 
Go to UniProtKB:  P02930
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.239 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 122.485α = 90
b = 70.966β = 100.61
c = 219.951γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-04-22
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-24
    Changes: Advisory