1QZ1

Crystal Structure of the Ig 1-2-3 fragment of NCAM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure and interactions of NCAM Ig1-2-3 suggest a novel zipper mechanism for homophilic adhesion

Soroka, V.Kolkova, K.Kastrup, J.S.Diederichs, K.Breed, J.Kiselyov, V.V.Poulsen, F.M.Larsen, I.K.Welte, W.Berezin, V.Bock, E.Kasper, C.

(2003) Structure 11: 1291-1301


  • PubMed Abstract: 
  • The neural cell adhesion molecule, NCAM, mediates Ca(2+)-independent cell-cell and cell-substratum adhesion via homophilic (NCAM-NCAM) and heterophilic (NCAM-non-NCAM molecules) binding. NCAM plays a key role in neural development, regeneration, and ...

    The neural cell adhesion molecule, NCAM, mediates Ca(2+)-independent cell-cell and cell-substratum adhesion via homophilic (NCAM-NCAM) and heterophilic (NCAM-non-NCAM molecules) binding. NCAM plays a key role in neural development, regeneration, and synaptic plasticity, including learning and memory consolidation. The crystal structure of a fragment comprising the three N-terminal Ig modules of rat NCAM has been determined to 2.0 A resolution. Based on crystallographic data and biological experiments we present a novel model for NCAM homophilic binding. The Ig1 and Ig2 modules mediate dimerization of NCAM molecules situated on the same cell surface (cis interactions), whereas the Ig3 module mediates interactions between NCAM molecules expressed on the surface of opposing cells (trans interactions) through simultaneous binding to the Ig1 and Ig2 modules. This arrangement results in two perpendicular zippers forming a double zipper-like NCAM adhesion complex.


    Related Citations: 
    • Expression, crystallization and preliminary X-ray analysis of the two amino-terminal Ig domains of the neural cell adhesion molecule (NCAM)
      Kasper, C.,Rasmussen, H.,Berezin, V.,Bock, E.,Larsen, I.K.
      (1999) Acta Crystallogr.,Sect.D 55: 1598
    • STRUCTURAL BASIS OF CELL-CELL ADHESION BY NCAM
      Kasper, C.,Rasmussen, H.,Kastrup, J.S.,Ikemizu, S.,Jones, E.Y.,Berezin, V.,Bock, E.,Larsen, I.K.
      (2000) Nat.Struct.Mol.Biol. 7: 389


    Organizational Affiliation

    Protein Laboratory, Institute of Molecular Pathology, Panum Institute, Blegdamsvej 3 C, DK-2200 Copenhagen, Denmark.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Neural cell adhesion molecule 1, 140 kDa isoform
A
291Rattus norvegicusMutation(s): 0 
Gene Names: Ncam1 (Ncam)
Find proteins for P13596 (Rattus norvegicus)
Go to UniProtKB:  P13596
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.218 
  • Space Group: I 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 51.440α = 90.00
b = 107.760β = 90.00
c = 149.300γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-11-04
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-04-04
    Type: Data collection