Recombinant Human CD28 Protein(hIgG1 Fc Tag) (PDMH100448)

For research use only.
Synonyms | PAS, T-cell-specific surface glycoprotein CD, CD28, Tp44, CD28 antigen, CD28 molecule, GPSAT, GYPA, HGpMiX, MNS, PAS2, T-cell-specific surface glycoprotein CD28, T44 |
Species | Human |
Expression Host | Mammalian |
Sequence | Asn19-Pro152 |
Accession | P10747-1 |
Calculated Molecular Weight | 39.6 kDa |
Observed Molecular Weight | 55-70 kDa |
Tag | C-hIgG1 Fc |
Bio-activity | Not validated for activity |
Purity | > 95% as determined by reducing SDS-PAGE. |
Endotoxin | < 1.0 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 | CD28 (Cluster of Differentiation 28) is a disulphide-bonded glycoprotein belonging to the immunoglobulin (Ig) superfamily, and structurally consists of a single Ig V-like extracellular domain, a transmembrane domain and an intracellular domain. Mouse CD28 is constitutively expressed on the surface of all murine T cells and on developing thymocytes as disulfide-linked homodimers or as monomers. CD28 can binds the B7-1 and B7-2 ligand, and together perform important functions in the T and B cell response pathways. B7/CD28 family members, which can augment or antagonize T-cell receptor signaling, in the regulation of central and peripheral T-cell tolerance. CD28 is thus involved in T-cell activation, the induction of cell proliferation and cytokine production and promotion of T-cell survival. |
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