Embigin is a 327 amino acid regulatory protein belonging to the immunoglobulin superfamily class of CAMs, and has two Ig-like (immunoglobulin-like) V- type domains. In situ hybridization analysis shows that Embigin has specific carbohydrate epitopes and plays an important role in early postimplantation embryogenesis. A highly glycosylated transmembrane glycoprotein, Embigin acts as a regulator of cell/ECM interactions during development and homeostasis of normal adult tissues. Transfection studies suggest its role in promotion of integrin-mediated cell-substratum adhesion. Widely expressed in most of the tissues and embryonal carcinoma cells, prostate and mammary cancer cell lines, it may also help in the classification of human carcinomas.
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