2RDD

X-ray crystal structure of AcrB in complex with a novel transmembrane helix.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.279 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal structure of AcrB in complex with a single transmembrane subunit reveals another twist.

Tornroth-Horsefield, S.Gourdon, P.Horsefield, R.Brive, L.Yamamoto, N.Mori, H.Snijder, A.Neutze, R.

(2007) Structure 15: 1663-1673

  • DOI: 10.1016/j.str.2007.09.023
  • Primary Citation of Related Structures:  
    2RDD

  • PubMed Abstract: 
  • Bacterial drug resistance is a serious concern for human health. Multidrug efflux pumps export a broad variety of substrates out of the cell and thereby convey resistance to the host. In Escherichia coli, the AcrB:AcrA:TolC efflux complex forms a principal transporter for which structures of the individual component proteins have been determined in isolation ...

    Bacterial drug resistance is a serious concern for human health. Multidrug efflux pumps export a broad variety of substrates out of the cell and thereby convey resistance to the host. In Escherichia coli, the AcrB:AcrA:TolC efflux complex forms a principal transporter for which structures of the individual component proteins have been determined in isolation. Here, we present the X-ray structure of AcrB in complex with a single transmembrane protein, assigned by mass spectrometry as YajC. A specific rotation of the periplasmic porter domain of AcrB is also revealed, consistent with the hypothesized "twist-to-open" mechanism for TolC activation. Growth experiments with yajc-deleted E. coli reveal a modest increase in the organism's susceptibility to beta-lactam antibiotics, but this effect could not conclusively be attributed to the loss of interactions between YajC and AcrB.


    Organizational Affiliation

    Department of Chemistry, Biochemistry and Biophysics, Gothenburg University, 40530 Gothenburg, Sweden. susanna.tornroth@chem.gu.se



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Acriflavine resistance protein BA1049Escherichia coliMutation(s): 0 
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
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
UPF0092 membrane protein yajCB37Escherichia coliMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P0ADZ7 (Escherichia coli (strain K12))
Explore P0ADZ7 
Go to UniProtKB:  P0ADZ7
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AIC
Query on AIC

Download Ideal Coordinates CCD File 
C [auth A], D [auth A](2S,5R,6R)-6-{[(2R)-2-AMINO-2-PHENYLETHANOYL]AMINO}-3,3-DIMETHYL-7-OXO-4-THIA-1-AZABICYCLO[3.2.0]HEPTANE-2-CARBOXYLIC ACID
C16 H19 N3 O4 S
AVKUERGKIZMTKX-NJBDSQKTSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.279 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 145.097α = 90
b = 145.097β = 90
c = 511.644γ = 120
Software Package:
Software NamePurpose
CNSrefinement
ADSCdata collection
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-12-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance