3P40

Crystal structure of neurofascin adhesion complex in space group p3221


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.316 
  • R-Value Work: 0.273 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Homophilic adhesion mechanism of neurofascin, a member of the l1 family of neural cell adhesion molecules.

Liu, H.Focia, P.J.He, X.

(2011) J.Biol.Chem. 286: 797-805

  • DOI: 10.1074/jbc.M110.180281
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The L1 family neural cell adhesion molecules play key roles in specifying the formation and remodeling of the neural network, but their homophilic interaction that mediates adhesion is not well understood. We report two crystal structures of a dimeri ...

    The L1 family neural cell adhesion molecules play key roles in specifying the formation and remodeling of the neural network, but their homophilic interaction that mediates adhesion is not well understood. We report two crystal structures of a dimeric form of the headpiece of neurofascin, an L1 family member. The four N-terminal Ig-like domains of neurofascin form a horseshoe shape, akin to several other immunoglobulin superfamily cell adhesion molecules such as hemolin, axonin, and Dscam. The neurofascin dimer, captured in two crystal forms with independent packing patterns, reveals a pair of horseshoes in trans-synaptic adhesion mode. The adhesion interaction is mediated mostly by the second Ig-like domain, which features an intermolecular β-sheet formed by the joining of two individual GFC β-sheets and a large but loosely packed hydrophobic cluster. Mutagenesis combined with gel filtration assays suggested that the side chain hydrogen bonds at the intermolecular β-sheet are essential for the homophilic interaction and that the residues at the hydrophobic cluster play supplementary roles. Our structures reveal a conserved homophilic adhesion mode for the L1 family and also shed light on how the pathological mutations of L1 affect its structure and function.


    Organizational Affiliation

    Department of Molecular Pharmacology and Biological Chemistry, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Neurofascin
A
404Homo sapiensMutation(s): 0 
Gene Names: NFASC (KIAA0756)
Find proteins for O94856 (Homo sapiens)
Go to Gene View: NFASC
Go to UniProtKB:  O94856
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.316 
  • R-Value Work: 0.273 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 94.508α = 90.00
b = 94.508β = 90.00
c = 126.723γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data collection
HKL-2000data scaling
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2010-10-05 
  • Released Date: 2010-11-03 
  • Deposition Author(s): Liu, H., He, X.

Revision History 

  • Version 1.0: 2010-11-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance