5XWX

Crystal structure of the four N-terminal immunoglogulin domains of Sidekick-1 protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Architecture of cell-cell adhesion mediated by sidekicks.

Tang, H.Chang, H.Dong, Y.Guo, L.Shi, X.Wu, Y.Huang, Y.He, Y.

(2018) Proc Natl Acad Sci U S A 115: 9246-9251

  • DOI: 10.1073/pnas.1801810115
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Cell-cell adhesion is important for cell growth, tissue development, and neural network formation. Structures of cell adhesion molecules have been widely studied by crystallography, revealing the molecular details of adhesion interfaces. However, due ...

    Cell-cell adhesion is important for cell growth, tissue development, and neural network formation. Structures of cell adhesion molecules have been widely studied by crystallography, revealing the molecular details of adhesion interfaces. However, due to technical limitations, the overall structure and organization of adhesion molecules at cell adhesion interfaces has not been fully investigated. Here, we combine electron microscopy and other biophysical methods to characterize the structure of cell-cell adhesion mediated by the cell adhesion molecule Sidekick (Sidekick-1 and Sidekick-2) and obtain 3D views of the Sidekick-mediated adhesion interfaces as well as the organization of Sidekick molecules between cell membranes by electron tomography. The results suggest that the Ig-like domains and the fibronectin III (FnIII) domains of Sidekicks play different roles in cell adhesion. The Ig-like domains mediate the homophilic transinteractions bridging adjacent cells, while the FnIII domains interact with membranes, resulting in a tight adhesion interface between cells that may contribute to the specificity and plasticity of cell-cell contacts during cell growth and neural development.


    Organizational Affiliation

    University of Chinese Academy of Sciences, Shanghai 201210, China.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein sidekick-1
A, B
458Mus musculusMutation(s): 0 
Gene Names: Sdk1
Find proteins for Q3UH53 (Mus musculus)
Go to UniProtKB:  Q3UH53
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.223 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.851α = 90
b = 118.062β = 90
c = 122.842γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
DENZOdata reduction
HKL-2000data scaling
SHELXCDphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-08-29
    Type: Initial release
  • Version 1.1: 2018-09-19
    Changes: Data collection, Database references
  • Version 1.2: 2018-09-26
    Changes: Data collection, Database references