Anti-CD9 Antibody Picoband®

CD9 antigen is a protein that in humans is encoded by the CD9 gene. CD9 is a cell surface glycoprotein that is known to complex with integrins and other transmembrane 4 superfamily proteins. It is found on the surface of exosomes. It can modulate cell adhesion and migration and also trigger platelet activation and aggregation. In addition, the protein appears to promote muscle cell fusion and support myotube maintenance. This protein also seems to be a key part in the egg-sperm fusion during mammalian fertilization. While oocytes are ovulated, CD9-deficient oocytes are not properly fused with sperm upon fertilization. CD9 is located in the microvillar membrane of the oocytes and also appears to intervene in maintaining the normal shape of oocyte microvilli.

E. coli-derived mouse CD9 recombinant protein (Position: T110-I193) . Mouse CD9 shares 77.4% and 86.9% amino acid (aa) sequence identity with human and rat CD9, respectively.

Cardiovascular, Cell Type Markers, Developmental Biology, Embryogenesis, Embryonic Stem Cells, Immunology, Intracellular, Platelets, Reproduction, Stem Cells, Surface Molecules

Involved in platelet activation and aggregation. Regulates paranodal junction formation. Involved in cell adhesion, cell motility and tumor metastasis. Required for sperm-egg fusion (By similarity) . Acts as a receptor for PSG17. .

1. Katz F, Povey S, Parkar M, Schneider C, Sutherland R, Stanley K, Solomon E, Greaves M (March 1984) . Chromosome assignment of monoclonal antibody-defined determinants on human leukemic cells. Eur J Immunol 13 (12) : 1008–1013. 2. Le Naour F, Rubinstein E, Jasmin C, Prenant M, Boucheix C (2000) . Severely Reduced Female Fertility in CD9-Deficient Mice. Science 287 (5451) : 319–321. 3. Runge KE, Evans JE, He ZY, Gupta S, McDonald KL, Stahlberg H, Primakoff P, Myles DG (2007) . Oocyte CD9 is enriched on the microvillar membrane and required for normal microvillar shape and distribution.Developmental Biology 304 (1) : 317–325.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.