CD81 (TAPA-1) Mouse, anti-Human, R718, Clone: JS-81, BD OptiBuild™

Description

• The JS-81 monoclonal antibody specifically binds to CD81, which is also known as, Target of the antiproliferative antibody 1 (TAPA1, TAPA-1), or Tetraspanin-28 (Tspan-28/TSPAN28)
• CD81 is an ∼26 kDa transmembrane protein that belongs to the tetraspanin (TM4SF) family
• It is involved in cell growth and signal transduction
• CD81 has a very broad cellular distribution, being expressed on cells of hematopoietic, neuroectodermal and mesenchymal origin
• In hematopoietic cells, the CD81 antigen is expressed on B and T lymphocytes, NK cells, thymocytes, eosinophils, germinal center follicular dendritic cells, and to a variable extent on monocytes
• The CD81 antigen is not expressed on neutrophils, platelets, or erythrocytes
• CD81-specific antibodies have been shown to have anti-proliferative effects on different lymphoid cell lines, particularly those derived from large cell lymphomas
• They are also reported to induce homotypic cell aggregation
• Immunoprecipitation studies reveal that CD81 is a component of a multimolecular complex of CD19, CD21, and CD225 that is involved in the activation and control of B cell growth.