Crystal structure of the human two pore domain K+ ion channel TRAAK (K2P4.1)
Primary Citation
  •   Molecular Description Hide
    Classification: Metal Transport
    Structure Weight: 67367.69
    Molecule: Potassium channel subfamily K member 4
    Polymer: 1 Type: protein Length: 309
    Chains: A, B
    Fragment: UNP residues 1-300
    Mutation: N104Q, N108Q
    Organism: Homo sapiens
    Gene Names: TRAAK Gene View for KCNK4
    UniProtKB: Search PDB | Q9NYG8   Protein Feature View
    Membrane Protein:   Source: mpstruc
    Channels: Potassium, Sodium, & Proton Ion-Selective
    Two-Pore Domain Potassium Channel K2P4.1 (TRAAK)
  •   Structure Validation Hide

    View the full validation report  


  • MolProbity Ramachandran Plot

  •   Related Citations in PDB Entry (REMARK 1) Hide
  •   Source Hide
    Polymer: 1
    Scientific Name: Homo sapiens   Taxonomy   Common Name: Human Expression System: Pichia pastoris  
  •   Ligand Chemical Component Hide
    Identifier Formula Name View Interactions
    K K
  •   External Domain Annotations Hide
  •   Structural Biology Knowledgebase Data Hide
Data in orange boxes are gathered from external resources (when available).
  Biological Assembly       
Biological assembly 1 assigned by authors and generated by PISA (software)
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  •   Deposition Summary Hide
    Authors:   Brohawn, S.G.,  MacKinnon, R.

    Deposition:   2011-11-12
    Release:   2012-02-08
  •   Revision History    Hide
    No revisions since initial release
  •   Experimental Details Hide
    Exp. Data:
      Structure Factors
    Resolution[Å]:   3.31
    R-Value: 0.317 (obs.)
    R-Free: 0.323
    Space Group: P 21 21 21
    Unit Cell:
      Length [Å] Angles [°]
    a = 87.94 α = 90.00 
    b = 130.85 β = 90.00 
    c = 132.78 γ = 90.00