2XKY

Single particle analysis of Kir2.1NC_4 in negative stain


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 17.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

  • Method: SOLUTION SCATTERING

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Self-Directed Assembly and Clustering of the Cytoplasmic Domains of Inwardly Rectifying Kir2.1 Potassium Channels on Association with Psd-95

Fomina, S.Howard, T.D.Sleator, O.K.Golovanova, M.O'Ryan, L.Leyland, M.L.Grossmann, J.G.Collins, R.F.Prince, S.M.

(2011) Biochim Biophys Acta 1808: 2374

  • DOI: 10.1016/j.bbamem.2011.06.021
  • Primary Citation of Related Structures:  
    2XKX, 2XKY

  • PubMed Abstract: 
  • The interaction of the extra-membranous domain of tetrameric inwardly rectifying Kir2.1 ion channels (Kir2.1NC(4)) with the membrane associated guanylate kinase protein PSD-95 has been studied using Transmission Electron Microscopy in negative stain. Three types of complexes were observed in electron micrographs corresponding to a 1:1 complex, a large self-enclosed tetrad complex and extended chains of linked channel domains ...

    The interaction of the extra-membranous domain of tetrameric inwardly rectifying Kir2.1 ion channels (Kir2.1NC(4)) with the membrane associated guanylate kinase protein PSD-95 has been studied using Transmission Electron Microscopy in negative stain. Three types of complexes were observed in electron micrographs corresponding to a 1:1 complex, a large self-enclosed tetrad complex and extended chains of linked channel domains. Using models derived from small angle X-ray scattering experiments in which high resolution structures from X-ray crystallographic and Nuclear Magnetic Resonance studies are positioned, the envelopes from single particle analysis can be resolved as a Kir2.1NC(4):PSD-95 complex and a tetrad of this unit (Kir2.1NC(4):PSD-95)(4). The tetrad complex shows the close association of the Kir2.1 cytoplasmic domains and the influence of PSD-95 mediated self-assembly on the clustering of these channels.


    Related Citations: 
    • Cytoplasmic Domain Structures of Kir2.1 And Kir3.1 Show Sites for Modulating Gating and Rectification.
      Pegan, S., Arrabit, C., Zhou, W., Kwiatkowski, W., Collins, A., Slesinger, P.A., Choe, S.
      (2005) Nat Neurosci 8: 279

    Organizational Affiliation

    University of Manchester, Manchester Interdisciplinary Biocentre, Manchester M1 7DN, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
INWARD RECTIFIER POTASSIUM CHANNEL 2A [auth I], B [auth J], C [auth K], D [auth L]309Mus musculusMutation(s): 0 
Gene Names: Kcnj2Irk1
UniProt
Find proteins for P35561 (Mus musculus)
Explore P35561 
Go to UniProtKB:  P35561
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 17.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
  • Method: SOLUTION SCATTERING

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-07-20
    Type: Initial release
  • Version 1.1: 2011-08-10
    Changes: Database references
  • Version 1.2: 2017-04-19
    Changes: Other
  • Version 1.3: 2017-08-30
    Changes: Data collection
  • Version 1.4: 2019-11-13
    Changes: Data collection, Other