Recombinant Human B7-H6 Fc Chimera Biotinylated Protein, CF

Catalog # Availability Size / Price Qty
BT7144-050
Recombinant Human B7-H6 Fc Chimera Biotinylated Protein, CF Data
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Recombinant Human B7-H6 Fc Chimera Biotinylated Protein, CF Summary

Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its binding ability in a functional ELISA. When Recombinant Human NKp30 Fc Chimera (Catalog # 1849-NK) is immobilized at 1 μg/mL, 100 μL/well, the concentration of Biotinylated Recombinant Human B7‑H6 Fc Chimera that produces 50% of the optimal binding response is 15-75 ng/mL. Measured by its ability to induce IFN-gamma secretion by NK‑92 human natural killer lymphoma cells. Brandt, C.S. et al. (2009) J. Exp. Med. 206:1495. The ED50 for this effect is 0.6-3 μg/mL
Source
Mouse myeloma cell line, NS0-derived human B7-H6 protein
Human B7-H6
(Met1-Ser262)
Accession # NP_001189368
IEGRMD Human IgG1
(Pro100-Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Analysis
Asp25
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
53 kDa (unlabeled)
SDS-PAGE
74-85 kDa, reducing conditions

Product Datasheets

Carrier Free

What does CF mean?

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.

What formulation is right for me?

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.

BT7144

Formulation Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution Reconstitute at 100 μg/mL in PBS.
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.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 2 weeks, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Data Image

Binding Activity View Larger

When Recombinant Human NKp30 Fc Chimera (Catalog # 1849-NK) is coated at 1 µg/mL, Biotinylated Recombinant Human B7-H6 Fc Chimera (Catalog # BT7144) binds with an ED50of 15-75 ng/mL.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: B7-H6

B7-H6 is a glycosylated member of the B7 family of immune co‑stimulatory proteins (1, 2). Mature human B7-H6 consists of a 238 amino acid (aa) extracellular domain (ECD) that contains one Ig-like V domain and one Ig-like C1 domain, a 21 aa transmembrane segment, and a 171 aa cytoplasmic domain that contains one ITIM, one SH2, and one SH3 motif (3). Both of the Ig-like domains carry N-linked glycosylation (4). Within the ECD, human B7-H6 shares 99%, 94%, and 87% aa sequence identity with chimpanzee, orangutan, and gibbon B7-H6, respectively, and 53% - 56% with bovine, canine, and equine B7-H6. Orthologs in mouse and rat have not been identified. The Ig-like V domain mediates 1:1 stoichiometric binding of B7-H6 to NKp30 expressed on NK cells (4, 5). It does not show binding to NKp44, NKp46, or NKG2D (3, 6). Ligation of NKp30 by B7-H6 induces NK cell activation and target cell cytolysis (3). B7-H6 is expressed on a wide range of hematopoietic, carcinoma, and melanoma tumor cells, which is consistent with the detection of NKp30 binding sites on many tumors (3, 7). The expression of NKp30 ligands on tumor cells correlates with tumor cell sensitivity to NKp30‑dependent cell lysis (7).

References
  1. Zou, W. and L. Chen (2008) Nat. Rev. Immunol. 8:467.
  2. Bour-Jordan, H. et al. (2011) Immunol. Rev. 241:180.
  3. Brandt, C.S. et al. (2009) J. Exp. Med. 206:1495.
  4. Li, Y. et al. (2011) J. Exp. Med. 208:703.
  5. Joyce, M.G. et al. (2011) Proc. Natl. Acad. Sci. 108:6223.
  6. Arnon, T.I. et al. (2006) Semin. Cancer Biol. 16:348.
  7. Byrd, A. et al. (2007) PLoS ONE 2:e1339.
Long Name
B7 Homolog 6
Entrez Gene IDs
374383 (Human); 102121659 (Cynomolgus Monkey)
Alternate Names
B7 homolog 6; B7H6; B7-H6; DKFZp686I21167; DKFZp686O24166; NCR3LG1

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