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Updated: Aug 19, 2026

Antibody Binding Specificity for Kappa (Vκ) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study
Published on: June 29, 2016
Desmosome-binding antibody KM48 recognises an extracellular antigen different from desmosomal cadherins Dsg 1-3 and
Stéphane Duhieu1, Céline Laperdrix, Takashi Hashimoto
1Department of Dermatology, Hôpital Edouard Herriot, Université Claude Bernard, EA3732/CNRS, Lyon 1, France.
Abstract:
Desmosomes are the most prominent and mechanically important epidermal intercellular junctions. Transmembrane proteins of desmosomes, desmogleins and desmocollins, are responsible for extracellular binding and, thus, are important for interkeratinocyte cohesion. We show here, using three different approaches, that the extracellular "cores" of epidermal desmosomes contain a highly glycosylated antigen, different from desmosomal cadherins. This protein, recognised by KM48 monoclonal antibody, is likely to be involved in the processes of keratinocyte differentiation, desmosome turnover and epidermal cohesion.
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