Desmocollin-1 Products

Description

Desmocollin-1 (DSC1) is a 100 kDa-110 kDa transmembrane glycoprotein in the cadherin family of calcium dependent adhesion molecules (1-3). Human DSC1 is synthesized with a 105 amino acid (aa) propeptide. The mature protein consists of a 557 aa extracellular domain (ECD) that contains five cadherin-like domains, a 23 aa transmembrane segment, and a 180 aa cytoplasmic domain (4, 5). Within the ECD, human DSC1 shares 79% and 82% aa sequence identity with bovine and mouse DSC1, respectively, and 53% with human DSC2 and DSC3. An alternately spliced isoform has a substituted and truncated cytoplasmic domain (5). DSC1 is one of the principal components of desmosomes which form adhesive contacts between epithelial cells (1, 2). It is predominantly expressed in the outer layers of stratified epithelia of the skin, tongue, and hair follicle root sheath (6, 7). It is required for both promoting epidermal differentiation and maintaining epidermal strength (8). DSC2 and DSC3, by contrast, are preferentially localized in the basal and suprabasal layers of the epidermis (1). DSC1 is not expressed in normal colon epithelium, but it is induced during colon carcinogenesis (9). Loss of DSC1 function in the skin disorders IgA pemphigus and Netherton Syndrome results from autoimmune targeting or enhanced KLK-7 mediated proteolysis, respectively (10-12).

Bioinformatics

Uniprot	Q08554 Human
Product By Gene ID	1823
Alternate Names	cadherin family member 1 CDHF1 desmocollin 1 Desmocollin1 Desmocollin-1 desmosomal glycoprotein 2/3 DG2/DG3 DG2/DG3 DSC1