Recombinant Human CD80/B7-1 Protein (mFc Tag)
SKU: PKSH033784-50
Recombinant Human CD80/B7-1 Protein (mFc Tag)
| SKU # | PKSH033784 |
| Expression Host | HEK293 Cells |
Description
| Synonyms | Activation B7-1 antigen, B7, B7-1, B7.1, BB1, CD28LG, CD28LG1, CD28LGB7-1 antigen, CD80, LAB7, T-lymphocyte activation antigen CD80 |
| Species | Human |
| Expression Host | HEK293 Cells |
| Sequence | Val35-Leu242 |
| Accession | P33681 |
| Calculated Molecular Weight | 50.5 kDa |
| Observed Molecular Weight | 70-95 kDa |
| Tag | C-mFc |
| Bio-activity | Not validated for activity |
Properties
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 1.0 EU per μg 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 of PBS, pH 7.4. Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | Please refer to the printed manual for detailed information. |
Background
Cluster of Differentiation 80, also called B7-1, is a member of cell surface immunoglobulin superfamily which plays key, yet distinct roles in the activation of T cells. It is the ligand for two different proteins on the T cell surface: CD28 and CTLA-4. Studies have shown that CTLA-4 binds mostly to CD80. The structure presents two extracellular domains: a membrane distal variable-like domain (IgV) and a membrane proximal Ig constant-like domain (IgC) along with an intracellular domain. Both IgV and IgC consist of anti-parallel beta sandwiches joined by a short linker region. CD80 is mostly expressed on the surface of antigen-presenting cells including activated B cells, macrophages and dendritic cells.