5NG5

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 1.1 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: https://doi.org/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. 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

    National Center for Macromolecular Imaging, Baylor College of Medicine, Houston, United States.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Multidrug efflux pump subunit AcrA373Escherichia coliMutation(s): 0 
Gene Names: acrAlirmtcAb0463JW0452
Membrane Entity: Yes 
UniProt
Find proteins for P0AE06 (Escherichia coli (strain K12))
Explore P0AE06 
Go to UniProtKB:  P0AE06
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0AE06
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Outer membrane protein TolCG [auth F],
H [auth I],
I [auth C]
493Escherichia coliMutation(s): 0 
Gene Names: tolCcolE1-imtcBmukArefItocweeAb3035JW5503
Membrane Entity: Yes 
UniProt
Find proteins for P02930 (Escherichia coli (strain K12))
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Go to UniProtKB:  P02930
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UniProt GroupP02930
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Multidrug efflux pump subunit AcrBJ [auth K],
K [auth L],
O [auth J]
1,049Escherichia coliMutation(s): 0 
Gene Names: acrBacrEb0462JW0451
Membrane Entity: Yes 
UniProt
Find proteins for P31224 (Escherichia coli (strain K12))
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Go to UniProtKB:  P31224
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UniProt GroupP31224
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Multidrug efflux pump accessory protein AcrZL [auth M],
M [auth N],
N [auth O]
54Escherichia coliMutation(s): 0 
Gene Names: acrZybhTb0762JW5102
Membrane Entity: Yes 
UniProt
Find proteins for P0AAW9 (Escherichia coli (strain K12))
Explore P0AAW9 
Go to UniProtKB:  P0AAW9
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UniProt GroupP0AAW9
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
5QF
Query on 5QF

Download Ideal Coordinates CCD File 
P [auth K],
Q [auth L],
R [auth J]
6-[2-(3,4-dimethoxyphenyl)ethylsulfanyl]-8-[4-(2-methoxyethyl)piperazin-1-yl]-3,3-dimethyl-1,4-dihydropyrano[3,4-c]pyridine-5-carbonitrile
C28 H38 N4 O4 S
PJMAUCHUUURBGI-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX
MODEL REFINEMENTCoot

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