4A82

Fitted model of staphylococcus aureus sav1866 model ABC transporter in the human cystic fibrosis transmembrane conductance regulator volume map EMD-1966.

Experimental Data Snapshot

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Resolution: 2.00 Å
  • R-Value Work: 0.370 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

The Cystic Fibrosis Transmembrane Conductance Regulator (Cftr):3D Structure and Localisation of a Channel Gate.

Rosenberg, M.F., O'Ryan, L., Hughes, G., Zhao, Z., Aleksandrov, L.A., Riordan, J.R., Ford, R.C.

(2011) J Biol Chem 286: 42647

  • DOI: 10.1074/jbc.M111.292268
  • Primary Citation of Related Structures:  
    4A82

  • PubMed Abstract: 

    • Cystic fibrosis affects about 1 in 2500 live births and involves loss of transmembrane chloride flux due to a lack of a membrane protein channel termed the cystic fibrosis transmembrane conductance regulator (CFTR). We have studied CFTR structure by electron crystallography ...

    Cystic fibrosis affects about 1 in 2500 live births and involves loss of transmembrane chloride flux due to a lack of a membrane protein channel termed the cystic fibrosis transmembrane conductance regulator (CFTR). We have studied CFTR structure by electron crystallography. The data were compared with existing structures of other ATP-binding cassette transporters. The protein was crystallized in the outward facing state and resembled the well characterized Sav1866 transporter. We identified regions in the CFTR map, not accounted for by Sav1866, which were potential locations for the regulatory region as well as the channel gate. In this analysis, we were aided by the fact that the unit cell was composed of two molecules not related by crystallographic symmetry. We also identified regions in the fitted Sav1866 model that were missing from the map, hence regions that were either disordered in CFTR or differently organized compared with Sav1866. Apart from the N and C termini, this indicated that in CFTR, the cytoplasmic end of transmembrane helix 5/11 and its associated loop could be partly disordered (or alternatively located).

    Organizational Affiliation: 

    Faculty of Life Sciences, University of Manchester, Manchester Interdisciplinary Biocentre, Manchester M1 7DN, United Kingdom.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATORA, B, C, D578Homo sapiensMutation(s): 0 
EC: 7.6.2
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
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Resolution: 2.00 Å
  • R-Value Work: 0.370 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.3α = 90
b = 75.8β = 90
c = 300γ = 125
Software Package:
Software NamePurpose
2DXmodel building
2DXrefinement
2DXdata scaling
2DXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-01-11
    Type: Initial release
  • Version 1.1: 2013-08-07
    Changes: Derived calculations, Other