5O66

Asymmetric AcrABZ-TolC


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 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:  
    5NC5, 5NG5, 5O66, 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, C493Escherichia coli K-12Mutation(s): 0 
Gene Names: tolCcolE1-imtcBmukArefItocweeAb3035JW5503
Find proteins for P02930 (Escherichia coli (strain K12))
Explore P02930 
Go to UniProtKB:  P02930
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Multidrug efflux pump subunit AcrAD, E, F, G, H, I373Escherichia coli O157:H7Mutation(s): 0 
Gene Names: acrAZ0578ECs0516
Find proteins for P0AE07 (Escherichia coli O157:H7)
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Go to UniProtKB:  P0AE07
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Multidrug efflux pump subunit AcrBJ, K, L1049Escherichia coli K-12Mutation(s): 0 
Gene Names: acrBacrEb0462JW0451
Find proteins for P31224 (Escherichia coli (strain K12))
Explore P31224 
Go to UniProtKB:  P31224
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Multidrug efflux pump accessory protein AcrZM, N, O54Escherichia coli O157:H7Mutation(s): 0 
Gene Names: acrZZ0932ECs0790
Find proteins for P0AAX1 (Escherichia coli O157:H7)
Explore P0AAX1 
Go to UniProtKB:  P0AAX1
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2017-06-05 
  • Released Date: 2017-06-14 
  • Deposition Author(s): Du, D., Luisi, B.F.
  • This entry supersedes: 5V78

Funding OrganizationLocationGrant Number
Wellcome TrustUnited KingdomRG61065
HFSPJapanRG68784

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-14
    Type: Initial release
  • Version 1.1: 2018-10-24
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.2: 2019-10-23
    Changes: Data collection, Other