5V5S

multi-drug efflux; membrane transport; RND superfamily; Drug resistance


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

An allosteric transport mechanism for the AcrAB-TolC Multidrug Efflux Pump.

Wang, Z.Fan, G.Hryc, C.F.Blaza, J.N.Serysheva, I.I.Schmid, M.F.Chiu, W.Luisi, B.F.Du, D.

(2017) Elife 6

  • DOI: 10.7554/eLife.24905
  • Primary Citation of Related Structures:  
    5O66, 5NC5, 5NG5, 5V5S

  • PubMed Abstract: 
  • Bacterial efflux pumps confer multidrug resistance by transporting diverse antibiotics from the cell. In Gram-negative bacteria, some of these pumps form multi-protein assemblies that span the cell envelope. Here, we report the near-atomic resolution cryoEM structures of the Escherichia coli AcrAB-TolC multidrug efflux pump in resting and drug transport states, revealing a quaternary structural switch that allosterically couples and synchronizes initial ligand binding with channel opening ...

    Bacterial efflux pumps confer multidrug resistance by transporting diverse antibiotics from the cell. In Gram-negative bacteria, some of these pumps form multi-protein assemblies that span the cell envelope. Here, we report the near-atomic resolution cryoEM structures of the Escherichia coli AcrAB-TolC multidrug efflux pump in resting and drug transport states, revealing a quaternary structural switch that allosterically couples and synchronizes initial ligand binding with channel opening. Within the transport-activated state, the channel remains open even though the pump cycles through three distinct conformations. Collectively, our data provide a dynamic mechanism for the assembly and operation of the AcrAB-TolC pump.


    Organizational Affiliation

    Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Outer membrane protein TolCA, B, C442Escherichia coliMutation(s): 0 
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
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Multidrug efflux pump subunit AcrAD, E, F, G, H, I397Escherichia coliMutation(s): 0 
Gene Names: acrAZ0578ECs0516
Membrane Entity: Yes 
UniProt
Find proteins for P0AE06 (Escherichia coli (strain K12))
Explore P0AE06 
Go to UniProtKB:  P0AE06
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Multidrug efflux pump subunit AcrBJ, K, L1049Escherichia coliMutation(s): 0 
Gene Names: acrBacrEb0462JW0451
Membrane Entity: Yes 
UniProt
Find proteins for P31224 (Escherichia coli (strain K12))
Explore P31224 
Go to UniProtKB:  P31224
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, CL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-04-19
    Type: Initial release
  • Version 1.1: 2017-08-02
    Changes: Data collection, Refinement description
  • Version 1.2: 2019-02-20
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.3: 2019-10-23
    Changes: Data collection, Other