2v5m | pdb_00002v5m
STRUCTURAL BASIS FOR DSCAM ISOFORM SPECIFICITY
|
Overview
The Dscam gene gives rise to thousands of diverse cell surface receptors, thought to provide homophilic and heterophilic recognition specificity for, neuronal wiring and immune responses. Mutually exclusive splicing allows, for the generation of sequence variability in three immunoglobulin, ecto-domains, D2, D3 and D7. We report X-ray structures of the, amino-terminal four immunoglobulin domains (D1-D4) of two distinct Dscam, isoforms. The structures reveal a horseshoe configuration, with variable, residues of D2 and D3 constituting two independent surface epitopes on, either side of the receptor. Both isoforms engage in homo-dimerization, coupling variable domain D2 with D2, and D3 with D3. These interactions, involve symmetric, antiparallel pairing of identical peptide segments from, ... [(full description)]
About this Structure
2V5M is a [Single protein] structure of sequence from [Drosophila melanogaster] with GOL as [ligand]. Full crystallographic information is available from [OCA].
Reference
Structural basis of Dscam isoform specificity., Meijers R, Puettmann-Holgado R, Skiniotis G, Liu JH, Walz T, Wang JH, Schmucker D, Nature. 2007 Aug 26;. PMID:17721508
Page seeded by OCA on Mon Oct 29 23:04:07 2007
