Ly108: a new member of the mouse CD2 family of cell surface proteins.

Peck SR, Ruley HE
Immunogenetics. 2000 52 (1-2): 63-72

PMID: 11132158 · DOI:10.1007/s002510000252

Proteins of the CD2 family belong to the immunoglobulin (Ig) superfamily of receptors that are expressed predominantly on hematopoeitic cells and function to modulate immune responses. The present study characterized a new member of the CD2 family, designated Ly108. The Ly108 gene encodes a protein of 331 amino acids, including a putative leader peptide, an extracellular region consisting of two Ig-like domains, a hydrophobic transmembrane segment, and a cytoplasmic tail of 69 amino acids. An alternatively spliced transcript, whose encoded protein differs only in the cytoplasmic domain, was also identified. Like other CD2 family members, the extracellular region of Ly108 also contains an N-terminal Ig variable regionlike domain lacking any disulfide bonds and a membrane-proximal truncated C2-like domain with two conserved disulfide bonds. Overall, Ly108 is most similar to CD84 and Ly9, and the gene maps to the distal arm of mouse Chromosome 1, in the vicinity of CD48 and Ly9. Ly108 transcripts appeared to be expressed only in lymphoid tissues, and were readily detected in all but the most highly differentiated mouse B- and T-cell lines analyzed.

MeSH Terms (19)

Amino Acid Sequence Animals Base Sequence CD2 Antigens Cell Line Chromosome Mapping DNA, Complementary Female Gene Expression Humans Male Membrane Proteins Mice Mice, Inbred BALB C Mice, Inbred C57BL Molecular Sequence Data RNA, Messenger Sequence Analysis, DNA Sequence Homology, Amino Acid

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