3G40

Crystal structure of the cytoplasmic domain of a prokaryotic cation chloride cotransporter


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.202 

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This is version 1.1 of the entry. See complete history


Literature

X-ray Structure of the C-Terminal Domain of a Prokaryotic Cation-Chloride Cotransporter

Warmuth, S.Zimmermann, I.Dutzler, R.

(2009) Structure 17: 538-546

  • DOI: 10.1016/j.str.2009.02.009
  • Primary Citation of Related Structures:  
    3G40

  • PubMed Abstract: 
  • The cation-chloride cotransporters (CCCs) mediate the electroneutral transport of chloride in dependence of sodium and potassium. The proteins share a conserved structural scaffold that consists of a transmembrane transport domain followed by a cytoplasmic regulatory domain ...

    The cation-chloride cotransporters (CCCs) mediate the electroneutral transport of chloride in dependence of sodium and potassium. The proteins share a conserved structural scaffold that consists of a transmembrane transport domain followed by a cytoplasmic regulatory domain. We have determined the X-ray structure of the C-terminal domain of the archaea Methanosarcina acetivorans. The structure shows a novel fold of a regulatory domain that is distantly related to universal stress proteins. The protein forms dimers in solution, which is consistent with the proposed dimeric organization of eukaryotic CCC transporters. The dimer interface observed in different crystal forms is unusual because the buried area is relatively small and hydrophilic. By using a biochemical approach we show that this interaction is preserved in solution and in the context of the full-length transporter. Our studies reveal structural insight into the CCC family and establish the oligomeric organization of this important class of transport proteins.


    Organizational Affiliation

    Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Na-K-Cl cotransporterA294Methanosarcina acetivoransMutation(s): 0 
Gene Names: MA4506
Find proteins for Q8THK8 (Methanosarcina acetivorans (strain ATCC 35395 / DSM 2834 / JCM 12185 / C2A))
Explore Q8THK8 
Go to UniProtKB:  Q8THK8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.202 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.045α = 90
b = 68.045β = 90
c = 137.025γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction
SCALEPACKdata scaling
SHELXSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-04-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance