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For research use only.
Synonyms | Activation B7-1 antigen, B7, CD80, Cd28l, Ly-53, Ly53, MIC17, T-lymphocyte activation antigen CD80, TSA1 |
Species | Rat |
Expression Host | E.coli |
Sequence | Gly41-Ala262 |
Accession | G3V671 |
Calculated Molecular Weight | 24.3 kDa |
Observed Molecular Weight | 32 kDa |
Tag | N-His |
Bio-activity | Not validated for activity |
Purity | > 95% as determined by reducing SDS-PAGE. |
Endotoxin | < 10 EU/mg of the protein as determined by the LAL method |
Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
Formulation | Lyophilized from a 0.2 μm filtered solution in PBS with 5% Trehalose and 5% Mannitol. |
Reconstitution | It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis. |
Background | The B-lymphocyte activation antigen B7-1 (referred to as B7), also known as CD80, is a member of cell surface immunoglobulin superfamily and is expressed on the surface of antigen-presenting cells including activated B cells, macrophages and dendritic cells. As costimulatory ligands, B7-1 which exists predominantly as dimer and the related protein B7-2, interact with the costimulatory receptors CD28 and cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) expressed on T cells, and thus constitute one of the dominant pathways that regulate T cell activation and tolerance, cytokine production, and the generation of CTL. The B7/CD28/CTLA4 pathway has the ability to both positively and negatively regulate immune responses. CD80 is thus regarded as promising therapeutic targets for autoimmune diseases and various carcinomas. |
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