2XKX

Single particle analysis of PSD-95 in negative stain


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 22.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation

Currently 2xkx does not have a wwPDB validation report.


This is version 1.2 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:  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. ...

    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: 
    • Supramodular Structure and Synergistic Target Binding of the N-Terminal Tandem Pdz Domains of Psd-95.
      Long, J.,Tochio, H.,Wang, P.,Fan, J.,Sala, C.,Niethammer, M.,Sheng, M.,Zhang, M.
      (2003) J.Mol.Biol. 327: 203
    • Structure of the Third Pdz Domain of Psd-95 Protein Complexed with Kketwv Peptide Ligand
      Saro, D.,Wawrzak, Z.,Martin, P.,Vickrey, J.,Paredes, A.,Kovari, L.,Spaller, M.
      () TO BE PUBLISHED --: --
    • Structure of the SH3-Guanylate Kinase Module from Psd-95 Suggests a Mechanism for Regulated Assembly of Maguk Scaffolding Proteins.
      Mcgee, A.W.,Dakoji, S.R.,Olsen, O.,Bredt, D.S.,Lim, W.A.,Prehoda, K.E.
      (2001) Mol.Cell 8: 1291
    • Solution Structure and Backbone Dynamics of the Second Pdz Domain of Postsynaptic Density-95.
      Tochio, H.,Hung, F.,Li, M.,Bredt, D.S.,Zhang, M.
      (2000) J.Mol.Biol. 295: 225


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DISKS LARGE HOMOLOG 4
A, B
721Rattus norvegicusGene Names: Dlg4 (Dlgh4, Psd95)
Find proteins for P31016 (Rattus norvegicus)
Go to UniProtKB:  P31016
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 22.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Currently 2XKX does not have a wwPDB validation report.



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-07-20
    Type: Initial release
  • Version 1.1: 2011-08-10
    Type: Database references
  • Version 1.2: 2017-08-30
    Type: Data collection