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Cloning, sequence and expression patterns of mouse desmocollin 2 (DSC 2): a cadherin-like adhesion molecule

Record type: Article

Desmocollins are cadherin-like adhesion molecules of desmosomes. We have determined the full cDNA sequence of a murine desmocollin, the homologue of human and bovine type 2 desmocollins (DSC2), and studied its tissue distribution and expression in stratified epithelia. An 8.5 day mouse embryo cDNA library was screened yielding overlapping clones which encoded the mouse DSC2. This gene has an open reading frame of 2710 base pairs (bp) encoding a polypeptide of 902 amino acids (aa). The polypeptide comprises a signal peptide, a precursor peptide, and a mature protein of 766 aa having an extracellular domain of 549 aa, a single transmembrane domain and a cytoplasmic domain of 184 aa. Like other desmocollins, murine DSC2 has two products, Dsc2a and Dsc2b, produced by alternative splicing of a 46 bp exon which encodes 11 COOH-terminal aa followed by an in-frame stop codon. Inclusion of this exon forms Dsc2b which is 54 aa shorter than Dsc2a. Mouse Dsc2a shows 75.7% amino acid identity to human and 63.3% identity to bovine Dsc2a. The mouse desmocollin is also homologous to the cadherins; 32.2% to the most closely related typical cadherin, human N-cadherin. DSC2 is ubiquitously expressed in epithelial tissues and the heart of adult mice and from the blastocyst stage of development. In situ hybridization shows that the gene is most strongly expressed suprabasally in stratified epithelia, similar to the expression of bovine DSC2.

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Citation

Lorimer, J.E., Hall, L.S., Clarke, J.P., Collins, J.E., Fleming, T.P. and Garrod, D.R. (1994) Cloning, sequence and expression patterns of mouse desmocollin 2 (DSC 2): a cadherin-like adhesion molecule Molecular Membrane Biology, 11, (4), pp. 229-237. (PMID:7711832).

More information

Published date: October 1994

Identifiers

Local EPrints ID: 179807
URI: http://eprints.soton.ac.uk/id/eprint/179807
ISSN: 0968-7688
PURE UUID: 19fb75e9-ebca-4e0b-ac7e-3f3ab63445ca

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Date deposited: 05 Apr 2011 08:13
Last modified: 18 Jul 2017 12:02

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Contributors

Author: J.E. Lorimer
Author: L.S. Hall
Author: J.P. Clarke
Author: J.E. Collins
Author: T.P. Fleming
Author: D.R. Garrod

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