3NCM image
Deposition Date 1998-09-21
Release Date 1999-07-23
Last Version Date 2024-11-06
Entry Detail
PDB ID:
3NCM
Title:
NEURAL CELL ADHESION MOLECULE, MODULE 2, NMR, 20 STRUCTURES
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Conformers Calculated:
100
Conformers Submitted:
20
Selection Criteria:
LEAST RESTRAINT VIOLATION
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:PROTEIN (NEURAL CELL ADHESION MOLECULE, LARGE ISOFORM)
Mutations:K1Y, L2V
Chain IDs:A
Chain Length:92
Number of Molecules:1
Biological Source:Rattus norvegicus
Ligand Molecules
Primary Citation
Structure and interactions of NCAM modules 1 and 2, basic elements in neural cell adhesion
Nat.Struct.Biol. 6 486 493 (1999)
PMID: 10331878 DOI: 10.1038/8292

Abstact

The structure in solution of the second Ig-module fragment of residues 117-208 of NCAM has been determined. Like the first Ig-module of residues 20-116, it belongs to the I set of the immunogloblin superfamily. Module 1 and module 2 interact weakly, and the binding sites of this interaction have been identified. The two-module fragment NCAM(20-208) is a stable dimer. Removal of the charged residues in these sites in NCAM(20-208) abolishes the dimerization. Modeling the dimer of NCAM(20-208) to fit the interactions of these charges produces one coherent binding site for the formation of two antiparallel strands of the first two NCAM modules. This mode of binding could be a major element in trans-cellular interactions in neural cell adhesion.

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Primary Citation of related structures