5E55

Crystal structure of mouse CNTN6 FN1-FN3 domains


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.702 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis for Interactions Between Contactin Family Members and Protein-tyrosine Phosphatase Receptor Type G in Neural Tissues.

Nikolaienko, R.M.Hammel, M.Dubreuil, V.Zalmai, R.Hall, D.R.Mehzabeen, N.Karuppan, S.J.Harroch, S.Stella, S.L.Bouyain, S.

(2016) J.Biol.Chem. 291: 21335-21349

  • DOI: 10.1074/jbc.M116.742163
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Protein-tyrosine phosphatase receptor type G (RPTPγ/PTPRG) interacts in vitro with contactin-3-6 (CNTN3-6), a group of glycophosphatidylinositol-anchored cell adhesion molecules involved in the wiring of the nervous system. In addition to PTPRG, CNTN ...

    Protein-tyrosine phosphatase receptor type G (RPTPγ/PTPRG) interacts in vitro with contactin-3-6 (CNTN3-6), a group of glycophosphatidylinositol-anchored cell adhesion molecules involved in the wiring of the nervous system. In addition to PTPRG, CNTNs associate with multiple transmembrane proteins and signal inside the cell via cis-binding partners to alleviate the absence of an intracellular region. Here, we use comprehensive biochemical and structural analyses to demonstrate that PTPRG·CNTN3-6 complexes share similar binding affinities and a conserved arrangement. Furthermore, as a first step to identifying PTPRG·CNTN complexes in vivo, we found that PTPRG and CNTN3 associate in the outer segments of mouse rod photoreceptor cells. In particular, PTPRG and CNTN3 form cis-complexes at the surface of photoreceptors yet interact in trans when expressed on the surfaces of apposing cells. Further structural analyses suggest that all CNTN ectodomains adopt a bent conformation and might lie parallel to the cell surface to accommodate these cis and trans binding modes. Taken together, these studies identify a PTPRG·CNTN complex in vivo and provide novel insights into PTPRG- and CNTN-mediated signaling.


    Organizational Affiliation

    From the Division of Molecular Biology and Biochemistry, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, Missouri 64110.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Contactin-6
A, B
307Mus musculusMutation(s): 0 
Gene Names: Cntn6
Find proteins for Q9JMB8 (Mus musculus)
Go to UniProtKB:  Q9JMB8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.702 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.200 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 86.744α = 90.00
b = 90.847β = 90.00
c = 99.349γ = 90.00
Software Package:
Software NamePurpose
Cootmodel building
PHASERphasing
HKL-2000data collection
HKL-2000data scaling
HKL-2000data reduction
PDB_EXTRACTdata extraction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesGM088806

Revision History 

  • Version 1.0: 2016-08-31
    Type: Initial release
  • Version 1.1: 2016-11-23
    Type: Database references
  • Version 1.2: 2017-09-27
    Type: Author supporting evidence, Database references