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Human two pore domain K+ channel TRAAK (K2P4.1) - Fab complex structure
Biology and Chemistry Report
4I9W
  •   Structure Details   Hide

    Structure Keywords

    Keywords METAL TRANSPORT
    Text POTASSIUM ION CHANNEL, METAL TRANSPORT

    Polymeric Molecules

    Chain A,B
    Description Potassium channel subfamily K member 4 
    Fragment UNP residues 1-300 
    Mutation N104Q, N108Q 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 33586.1 
    Source Method genetically manipulated  
    Entity Name TWIK-related arachidonic acid-stimulated potassium channel protein, TRAAK, Two pore potassium channel KT4.1, Two pore K(+) channel KT4.1 
    Chain D,F
    Description ANTIBODY FAB FRAGMENT LIGHT CHAIN 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 23038.6 
    Source Method genetically manipulated  
    Chain E,G
    Description ANTIBODY FAB FRAGMENT HEAVY CHAIN 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 23474.5 
    Source Method genetically manipulated  

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    CA  CALCIUM ION  Ca   40.08  View 
    POTASSIUM ION  K   39.10  View 
     
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A,B KCNK4_HUMAN B5TJL1     

    Keywords and Names

    Chain(s) RCSB Name UniProtKB Name UniProtKB Keywords

    Immune Epitopes (B-cell and T-Cell)

    Immune Epitope Database (IEDB)
    Epitope ID 181072    
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A,B
    GO ID   Ontology GO Term Definition
    71805   Potassium Ion Transmembrane Transport  A Process in Which a Potassium Ion Is Transported From One Side of a Membrane to the Other. 
    16020   Membrane  Double Layer of Lipid Molecules That Encloses All Cells and in Eukaryotes Many Organelles; May Be a Single or Double Lipid Bilayer; Also Includes Associated Proteins. 
    5267   Potassium Channel Activity  Catalysis of Facilitated Diffusion of a Potassium Ion (by an Energy Independent Process) Involving Passage Through a Transmembrane Aqueous Pore or Channel Without Evidence For a Carrier Mediated Mechanism. 


     
  •   Gene Details   Hide

    Genetic Source

    Chain E,G
    Common Name Mouse
    Scientific Name Mus musculus  
    Host Scientific Name Mus musculus  


    Chain D,F
    Common Name Mouse
    Scientific Name Mus musculus  
    Host Scientific Name Mus musculus  


    Chain A,B
    Common Name Human
    Scientific Name Homo sapiens  
    Gene k2p4.1, kcnk4, traak
    Host Scientific Name Pichia pastoris  
    Host Vector Type Plasmid
    Host Plasmid Name pPICZ-B


    Genome Information

    Chromosome Locus Gene ID Gene Name Symbol
    11 11q13 50801     potassium channel, subfamily K, member 4 KCNK4