Recombinant Cynomolgus B7-H7/HHLA2 Fc Chimera Protein, CF
Recombinant Cynomolgus B7-H7/HHLA2 Fc Chimera Protein, CF Summary
Product Specifications
| Cynomolgus Monkey B7-H7 (Ile21-Asn345) Accession # XP_005548285 | IEGRMD | Human IgG1 (Pro100-Lys330) |
| N-terminus | C-terminus | |
Analysis
Product Datasheets
Carrier Free
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
10108-B7
| Formulation | Lyophilized from a 0.2 μm filtered solution in Citric Acid and NaCl with Trehalose. |
| Reconstitution | Reconstitute at 200 μg/mL in water. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Scientific Data
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Recombinant Cynomolgus Monkey B7-H7/HHLA2 Fc Chimera (Catalog # 10108-B7) inhibits anti-CD3 antibody induced IL-2 secretion in human T lymphocytes. The ED50 for this effect is 1-6 μg/mL.
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1 μg/lane of Recombinant Cynomolgus Monkey B7-H7/HHLA2 Fc Chimera (Catalog # 10108-B7) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing bands at 92-109 kDa and 180-220 kDa, respectively.
Reconstitution Calculator
Background: B7-H7/HHLA2
B7-H7, also known as HHLA2 (HERV-H LTR-associating protein 2), is a member of the B7 family of immune regulatory proteins (1, 2). The mature human B7-H7 protein consists of a 322 amino acid (aa) extracellular domain (ECD) with three immunoglobulin-like domains, a 21 aa transmembrane segment, and a 49 aa cytoplasmic domain (3-5). Within the ECD, cynomolgus B7-H7 shares 90% aa sequence identity with human B7-H7. It is constitutively expressed on monocytes and is up-regulated by LPS and IFN-gamma stimulation. It is expressed on LPS/IFN-gamma treated B cells but not on resting B cells (5). B7-H7 binds to cell surface determinants on resting and mature T cells, B cells, and monocytes as well as on immature and mature dendritic cells (5). The receptor TMIGD2, commonly found in endothelial and epithelial cells, has also been identified as one of the receptors for B7-H7 (6). Soluble B7-H7 inhibits the proliferation of activated CD4+ and CD8+ T cells and their production of IFN-gamma, TNF-alpha, IL-5, IL-10, IL-13, IL-17A, and IL-22 (5).
- Zou, W. and L. Chen (2008) Nat. Rev. Immunol. 8:467.
- Bour-Jordan, H. et al. (2011) Immunol. Rev. 241:180.
- Mager, D.L. et al. (1999) Genomics 59:255.
- Flajnik, M.M. et al. (2012) Immunogenetics 64:571.
- Zhao, R. et al. (2013) Proc. Natl. Acad. Sci. USA 110:9879.
- Janakiram, M. et al. (2015) OncoImmunology 4:e1026534-1
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