5AYQ

Structure-based site-directed photo-crosslinking analyses of multimeric cell-adhesive interactions of VGSC beta subunits


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure-based site-directed photo-crosslinking analyses of multimeric cell-adhesive interactions of voltage-gated sodium channel beta subunits

Shimizu, H.Miyazaki, H.Ohsawa, N.Shoji, S.Ishizuka-Katsura, Y.Tosaki, A.Oyama, F.Terada, T.Sakamoto, K.Shirouzu, M.Sekine, S.Nukina, N.Yokoyama, S.

(2016) Sci Rep 6: 26618-26618

  • DOI: 10.1038/srep26618

  • PubMed Abstract: 
  • The β1, β2, and β4 subunits of voltage-gated sodium channels reportedly function as cell adhesion molecules. The present crystallographic analysis of the β4 extracellular domain revealed an antiparallel arrangement of the β4 molecules in the crystal ...

    The β1, β2, and β4 subunits of voltage-gated sodium channels reportedly function as cell adhesion molecules. The present crystallographic analysis of the β4 extracellular domain revealed an antiparallel arrangement of the β4 molecules in the crystal lattice. The interface between the two antiparallel β4 molecules is asymmetric, and results in a multimeric assembly. Structure-based mutagenesis and site-directed photo-crosslinking analyses of the β4-mediated cell-cell adhesion revealed that the interface between the antiparallel β4 molecules corresponds to that in the trans homophilic interaction for the multimeric assembly of β4 in cell-cell adhesion. This trans interaction mode is also employed in the β1-mediated cell-cell adhesion. Moreover, the β1 gene mutations associated with generalized epilepsy with febrile seizures plus (GEFS+) impaired the β1-mediated cell-cell adhesion, which should underlie the GEFS+ pathogenesis. Thus, the structural basis for the β-subunit-mediated cell-cell adhesion has been established.


    Organizational Affiliation

    RIKEN Systems and Structural Biology Center, Tsurumi, Yokohama 230-0045, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sodium channel subunit beta-4
A, B
138Mus musculusMutation(s): 0 
Gene Names: Scn4b (Gm1471)
Find proteins for Q7M729 (Mus musculus)
Go to UniProtKB:  Q7M729
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.203 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 103.726α = 90.00
b = 59.282β = 105.97
c = 42.369γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data scaling
MrBUMPphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-09-01 
  • Released Date: 2016-06-08 
  • Deposition Author(s): Shimizu, H.

Funding OrganizationLocationGrant Number
Ministry of Education, Culture, Sports, Science, and TechnologyJapan24770195

Revision History 

  • Version 1.0: 2016-06-08
    Type: Initial release