4TK4

GephE in complex with a GABA receptor alpha3 subunit derived double mutant peptide in space group P61


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.601 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular basis of the alternative recruitment of GABAA versus glycine receptors through gephyrin.

Maric, H.M.Kasaragod, V.B.Hausrat, T.J.Kneussel, M.Tretter, V.Strmgaard, K.Schindelin, H.

(2014) Nat Commun 5: 5767-5767

  • DOI: 10.1038/ncomms6767
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • γ-Aminobutyric acid type A and glycine receptors (GABA(A)Rs, GlyRs) are the major inhibitory neurotransmitter receptors and contribute to many synaptic functions, dysfunctions and human diseases. GABA(A)Rs are important drug targets regulated by dire ...

    γ-Aminobutyric acid type A and glycine receptors (GABA(A)Rs, GlyRs) are the major inhibitory neurotransmitter receptors and contribute to many synaptic functions, dysfunctions and human diseases. GABA(A)Rs are important drug targets regulated by direct interactions with the scaffolding protein gephyrin. Here we deduce the molecular basis of this interaction by chemical, biophysical and structural studies of the gephyrin-GABA(A)R α3 complex, revealing that the N-terminal region of the α3 peptide occupies the same binding site as the GlyR β subunit, whereas the C-terminal moiety, which is conserved among all synaptic GABA(A)R α subunits, engages in unique interactions. Thermodynamic dissections of the gephyrin-receptor interactions identify two residues as primary determinants for gephyrin's subunit preference. This first structural evidence for the gephyrin-mediated synaptic accumulation of GABA(A)Rs offers a framework for future investigations into the regulation of inhibitory synaptic strength and for the development of mechanistically and therapeutically relevant compounds targeting the gephyrin-GABA(A)R interaction.


    Organizational Affiliation

    1] Rudolf Virchow Center for Experimental Biomedicine, University of Würzburg, Josef-Schneider-Straße 2, Building D15, D-97080 Würzburg, Germany [2] Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Gephyrin
A, B
419Rattus norvegicusMutation(s): 0 
Gene Names: Gphn (Gph)
Find proteins for Q03555 (Rattus norvegicus)
Go to UniProtKB:  Q03555
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Gamma-aminobutyric acid receptor subunit alpha-3
C, D
11Rattus norvegicusMutation(s): 2 
Gene Names: Gabra3 (Gabra-3)
Find proteins for P20236 (Rattus norvegicus)
Go to UniProtKB:  P20236
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.601 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.176 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 160.180α = 90.00
b = 160.180β = 90.00
c = 127.910γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research FoundationGermanySchi 425/ 8-1

Revision History 

  • Version 1.0: 2014-12-24
    Type: Initial release
  • Version 1.1: 2015-02-04
    Type: Database references
  • Version 1.2: 2017-09-27
    Type: Author supporting evidence, Derived calculations, Other, Source and taxonomy, Structure summary