Anti-CD2/CD2 Antibody Picoband® Fluoro594 Conjugated

CD2 (cluster of differentiation 2) is a cell adhesion molecule found on the surface of T cells and natural killer (NK) cells. It has also been called T-cell surface antigen T11/Leu-5, LFA-2, LFA-3 receptor, erythrocyte receptor and rosette receptor. Monoclonal antibodies ed against CD2 inhibit the formation of rosettes with sheep erythrocytes, indicating that CD2 is the erythrocyte receptor or is closely associated with it. CD2 is one of the earliest T-cell markers, being present on more than 95% of thymocytes. Due to its structural characteristics, CD2 is a member of the immunoglobulin superfamily; it possesses two immunoglobulin-like domains in its extracellular portion. The localization of CD2 to 1p13 is established by in situ hybridization. CD2 interacts with other adhesion molecules, such as lymphocyte function-associated antigen-3 (LFA-3/CD58) in humans, or CD48 in rodents, which are expressed on the surfaces of other cells. With the use of transgenic mice, such an LCR is identified within the 3-prime flanking region of the human CD2 gene.

E. coli-derived mouse CD2 recombinant protein (Position: R23-S203) . Mouse CD2 shares 49.7% and 73.3% amino acid (aa) sequence identity with human and rat CD2, respectively.

Expressed in the temporal lobe, frontal lobe, parietal lobe, hippocampus, and cerebellum. Also found in kidney, lung, liver, heart, skeletal muscle, placenta. .

CD2 interacts with lymphocyte function-associated antigen (LFA-3) and CD48/BCM1 to mediate adhesion between T-cells and other cell types. CD2 is implicated in the triggering of T- cells, the cytoplasmic domain is implicated in the signaling function.

1. Brown, M. H., Gorman, P. A., Sewell, W. A., Spurr, N. K., Sheer, D., Crumpton, M. J. The gene coding for the human T-lymphocyte CD2 antigen is located on chromosome 1p. Hum. Genet. 76: 191-195, 1987. 2. Clayton, L. K., Ramachandran, H., Pravtcheva, D., Chen, Y.-F., Diamond, D. J., Ruddle, F. H., Reinherz, E. L. The gene for T11 (CD2) maps to chromosome 1 in humans and to chromosome 3 in mice. J. Immun. 140: 3617-3621, 1988. 3. Kingsmore, S. F., Watson, M. L., Moseley, W. S., Seldin, M. F. Physical linkage of genes encoding the lymphocyte adhesion molecules CD2 and its ligand LFA-3. Immunogenetics 30: 123-125, 1989.