Recombinant Human CD274 Protein(His Tag) (PDMH100256)
For research use only.
| Synonyms | B7 H, B7 H1, B7 homolog 1, B7-H1, B7H, B7H1, CD 274, CD274, CD274 antigen, CD274 molecule, MGC142294, MGC142296, OTTHUMP00000021029, PD L1, PD-L1, PD1L1, PDCD1 ligand 1, PDCD1L1, PDCD1LG1, PDL 1, PDL1, Programmed cell death 1 ligand 1, Programmed death ligand 1, RGD1566211 |
| Species | Human |
| Expression Host | HEK293 Cells |
| Sequence | Met1-Thr239 |
| Accession | Q9NZQ7 |
| Calculated Molecular Weight | 26.1 kDa |
| Observed Molecular Weight | 35-40 kDa |
| Tag | C-His |
| Bio-activity | Not validated for activity |
| Form | Lyophilized powder |
| Purity | > 90% 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 | Programmed cell death ligand 1(CD274,or B7-H1,PD-L1),is the first member of B7 family to be discovered. B7 family molecules are type I transmembrane proteins belonging to the immunoglobulin superfamily. In concert with an their CD28 family receptors,the B7s are key regulators of the adaptive immune response. CD274 is suggested a negative regulator of T and B cell,and play important role in mediating tolerance of lymphocytes to self-antigens. It also involved in the costimulatory signal,essential for T-cell proliferation and production of IL10 and IFNG,in an IL2-dependent and a PDCD1-independent manner. PD-L1 is a 290 aa transmembrane protein with an a calculated molecular weight of 33 kDa,the apparent molecular weight has been reported as 45-70 kDa,suggesting probable glycosylation . |
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