CEACAM1 is a member of the carcinoembryonic antigen (CEA) gene family, which belongs to the immunoglobulin superfamily. Two subgroups of the CEA family, the CEA cell adhesion molecules and the pregnancy-specific glycoproteins, are located within a 1.2 Mb cluster on the long arm of chromosome 19. Eleven pseudogenes of the CEA cell adhesion molecule subgroup are also found in the cluster. The encoded protein was originally described in bile ducts of liver as biliary glycoprotein. Subsequently, it was found to be a cell-cell adhesion molecule detected on leukocytes, epithelia, and endothelia. The encoded protein mediates cell adhesion via homophilic as well as heterophilic binding to other proteins of the subgroup. Multiple cellular activities have been attributed to the encoded protein, including roles in the differentiation and arrangement of tissue three-dimensional structure, angiogenesis, apoptosis, tumor suppression, metastasis, and the modulation of innate and adaptive immune responses. Multiple transcript variants encoding different isoforms have been reported, but the full-length nature of only two has been determined.
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Protein Aliases: antigen CD66; BGP-1; Biliary glycoprotein 1; Biliary glycoprotein D; carcinoembryonic antigen 1; carcinoembryonic antigen 7; Carcinoembryonic antigen-related cell adhesion molecule 1; carcinoembryonic antigen-related cell adhesion molecule 1 (biliary glycoprotein); CD66a; CD66a antigen; CEA-related cell adhesion molecule 1; hepatitis virus (MHV-4) susceptibility; hepatitis virus receptor; MHV-R; MHVR1; Murine hepatitis virus receptor
Gene Aliases: bb-1; BGP; BGP1; BGPI; C-CAM; Cc1; CD66a; Cea-1; Cea-7; Cea1; Cea7; CEACAM1; Hv-2; Hv2; mCEA1; Mhv-1; MHVR; MHVR1; mmCGM1; mmCGM1a; mmCGM2
Molecular Function: immunoglobulin receptor superfamily