Carcinoembryonic antigen (CEA)-related cell adhesion molecule 1 (CEACAM-1; also BGP) is a 160 kDa member of the CEACAM branch of the CEA gene family of the immunoglobulin superfamily . There is no CEACAM-2 in human. The gene for human CEACAM-1 codes for a 526 amino acid (aa) type I transmembrane protein that contains a 34 aa signal sequence, a 394 aa extracellular domain (ECD), a 24 aa transmembrane segment, and a 74 aa cytoplasmic region. The ECD contains one N-terminal V-type Ig-like domain, followed by three C2-type Ig-like domains. It shows considerable glycosylation, including high mannose residues and (sialyl) LewisX. The cytoplasmic region shows one ITIM motif and a calmodulin binding site.

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-25 ~ -15℃保存，收到货之后有效期1年。 复溶后， 无菌条件下，-85 ~ -65℃保存，3个月有效期。