2HYD

Multidrug ABC transporter SAV1866


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.255 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Structure of a bacterial multidrug ABC transporter.

Dawson, R.J.Locher, K.P.

(2006) Nature 443: 180-185

  • DOI: https://doi.org/10.1038/nature05155
  • Primary Citation of Related Structures:  
    2HYD

  • PubMed Abstract: 

    Multidrug transporters of the ABC family facilitate the export of diverse cytotoxic drugs across cell membranes. This is clinically relevant, as tumour cells may become resistant to agents used in chemotherapy. To understand the molecular basis of this process, we have determined the 3.0 A crystal structure of a bacterial ABC transporter (Sav1866) from Staphylococcus aureus. The homodimeric protein consists of 12 transmembrane helices in an arrangement that is consistent with cross-linking studies and electron microscopic imaging of the human multidrug resistance protein MDR1, but critically different from that reported for the bacterial lipid flippase MsbA. The observed, outward-facing conformation reflects the ATP-bound state, with the two nucleotide-binding domains in close contact and the two transmembrane domains forming a central cavity--presumably the drug translocation pathway--that is shielded from the inner leaflet of the lipid bilayer and from the cytoplasm, but exposed to the outer leaflet and the extracellular space.


  • Organizational Affiliation

    Institute of Molecular Biology and Biophysics, ETH Zurich, 8093 Zurich, Switzerland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ABC transporter homolog
A, B
578Staphylococcus aureusMutation(s): 0 
Gene Names: SAV1866
Membrane Entity: Yes 
UniProt
Find proteins for Q99T13 (Staphylococcus aureus (strain Mu50 / ATCC 700699))
Explore Q99T13 
Go to UniProtKB:  Q99T13
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ99T13
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.255 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 161.279α = 90
b = 103.955β = 97.99
c = 181.013γ = 90
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-09-05
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-21
    Changes: Data collection, Database references, Derived calculations