| Source | Mouse B7-H1, amino acids (Phe19-Thr238) (Accession# NM_021893), was expressed in 293E cells. Human IgG-Fc is in the carboxy-terminus. |
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| Molecular Mass | The 458 amino acid recombinant protein has a predicted molecular mass of approximately 51.5kD. The DTT-reduced and non-reduced protein migrate at approximately 70 - 80kD and 140kD respectively by SDS-PAGE. The predicted N-terminal amino acid is Phe. |
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| Purity | >95%, as determined by Coomassie stained SDS-PAGE. |
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| Formulation | 0.22 µm filtered protein solution is in PBS, pH 7.2. |
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| Endotoxin Level | Less than 0.1 EU per µg of protein as determined by the LAL method. |
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| Concentration | 10 and 25 µg sizes are bottled at 200 µg/mL. 100 µg size and larger sizes are lot-specific and bottled at the concentration indicated on the vial. To obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool. |
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| Storage & Handling | Unopened vial can be stored between 2°C and 8°C for up to 2 weeks, at -20°C for up to six months, or at -70°C or colder until the expiration date. For maximum results, quick spin vial prior to opening. The protein can be aliquoted and stored at -20°C or colder. Stock solutions can also be prepared at 50 - 100 µg/mL in appropriate sterile buffer, carrier protein such as 0.2 - 1% BSA or HSA can be added when preparing the stock solution. Aliquots can be stored between 2°C and 8°C for up to one week and stored at -20°C or colder for up to 3 months. Avoid repeated freeze/thaw cycles. |
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| Activity | Immobilized mouse PD-L1 binds mouse PD-1 in a dose dependent manner. The ED50 = 0.1 - 0.5 µg/ml. |
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| Recommended Usage | Bioassay |
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| Application Notes | BioLegend carrier-free recombinant proteins provided in liquid format are shipped on blue-ice. Our comparison testing data indicates that when handled and stored as recommended, the liquid format has equal or better stability and shelf-life compared to commercially available lyophilized proteins after reconstitution. Our liquid proteins are verified in-house to maintain activity after shipping on blue ice and are backed by our 100% satisfaction guarantee. If you have any concerns, contact us at [email protected]. |
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| Product Citations | Wang H, et al. 2022. Mol Cancer Ther. 21:1710. PubMed Pereira JA, et al. 2023. Front Immunol. 14:997376. PubMed Smith BC, et al. 2023. J Neuroinflammation. 234:20. PubMed Cheng B, et al. 2022. Cancer Commun (Lond). 42:17. PubMed Mitchell LA, et al. 2019. Oncotarget. 10:2252. PubMed Liao YC, et al. 2021. Front Immunol. 12:743030. PubMed |
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| Structure | Dimer. |
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| Distribution | APC, monocytes, dendritic cells, expressed in nonlymphoid tissues, and stromal cell. |
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| Function | Enhances CD28-independent T-helper cell function, suppresses immune responses against autoantigens, and participates in fetomaternal tolerance. |
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| Interaction | Antigen-stimulated T and B cells, regulatory T cells, follicular T and B cells, dendritic cells, and monocytes. |
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| Ligand/Receptor | PD-1 (CD279). |
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| Bioactivity | Immobilized mouse PD-L1 binds to its receptor PD-1. |
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| Cell Type | Embryonic Stem Cells |
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| Biology Area | Immunology, Cancer Biomarkers, Costimulatory Molecules, Stem Cells |
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| Molecular Family | Adhesion Molecules, CD Molecules, Immune Checkpoint Receptors, Soluble Receptors |
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| Antigen References | 1. Dong H, et al. 1999. Nat. Med. 5:1365.2. Freeman GJ, et al. 2000. J. Exp. Med. 192:1027.3. Latchman Y, et al. 2001. Nat. Immunol. 2:261.4. Latchman YE, et al. 2004. Proc. Natl. Acad. Sci. USA 101:10691.5. Guleria I, et al. 2005. J. Exp. Med. 202:231.6. Lin DY, et al. 2008. Proc. Natl. Acad. Sci. USA 105:3011.7. Dai S, et al. 2014. Cell Immunol. 290:72.8. Melero I, et al. 2015. Nat. Rev. Cancer 15:457. |
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| Gene ID | 60533 |
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| UniProt | View information about B7-H1 on UniProt.org |
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| Regulatory Status | RUO |
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| Other Names | CD274, Programmed cell death 1 ligand 1 (PD-L1), B7 homolog 1 (B7h1) |
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