Recombinant Human BTN2A2 Fc Chimera Biotinylated Protein, CF

Butyrophilin 2A2 Learn More About B7-related Butryophilins as Immune Modulators
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BT8918-050
Recombinant Human BTN2A2 Fc Chimera Biotinylated Protein, CF Data
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Recombinant Human BTN2A2 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 ability to inhibit anti-CD3 antibody induced IL-2 secretion in human T lymphocytes. The ED50 for this effect is 0.1-0.5 μg/mL.
Source
Human embryonic kidney cell, HEK293-derived human BTN2A2/Butyrophilin 2A2 protein
Human BTN2A2
(Gln33-Val237)
Accession # Q8WVV5
IEGRMD Human IgG1
(Pro100-Lys330)
N-terminusC-terminus
Accession #
N-terminal Sequence
Analysis
No result obtained. Gln33 inferred from enzymatic pyroglutamate treatment revealing Phe34
Structure / Form
Disulfide-linked homodimer. Biotinylated via sugars
Predicted Molecular Mass
50 kDa (unlabeled)
SDS-PAGE
66-77 kDa and 140-180 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.

BT8918

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.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Data Image

Bioactivity View Larger

Both Biotinylated Recombinant Human BTN2A2 Fc Chimera (Catalog # BT8918) and Recombinant Human BTN2A2 Fc Chimera (Catalog # 8918-BT) inhibit anti-CD3 antibody-induced IL-2 secretion in human T lymphocytes. The ED50for this effect is 0.1-0.5 µg/mL. The similarity in activity highlights that the biotinylated protein is fully functional.

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: BTN2A2/Butyrophilin 2A2

Butyrophilin 2A2 (BTN2A2) is a widely expressed 65 kDa type I transmembrane glycoprotein that functions as a negative regulator of immune responses (1). Mature human Butyrophilin 2A2 consisits of a 233 amino acid (aa) extracellular domain with two immunoglobulin-like domains, a 21 aa transmembrane segment, and a 237 aa cytoplasmic domain. Within the Ig-like domains, human Butyrophilin 2A2 shares 70% aa sequence identity with mouse and rat Butyrophilin 2A2. Alternative splicing generates additional isoforms of human Butyrophilin 2A2 that lack the first, second, or both Ig-like domains as well as isoforms with substitutions and deletions in the cytoplasmic region. Within the immune system, Butyrophilin 2A2 is expressed on thymic epithelial cells, naïve B cells, splenic NK cells, dendritic cells, and peritoneal macrophages and is up-regulated with cell activation (2, 3). Butyrophilin 2A2 inhibits T cell proliferation and activation and enhances the development of FoxP3+ regulatory T cells (2, 3). Its up-regulation in the hippocampus is associated with schizophrenia (4).

References
  1. Arnett, H.A. and J.L. Viney (2014) Nat. Rev. Immunol. 14:559.
  2. Smith, I.A. et al. (2010) J. Immunol. 184:3514.
  3. Ammann, J.U. et al. (2013) J. Immunol. 190:5030.
  4. Sinkus, M.L. et al. (2013) Brain Behav. Immun. 32:51.
Long Name
Butyrophilin Subfamily 2 Member A2
Entrez Gene IDs
10385 (Human); 238555 (Mouse); 306957 (Rat)
Alternate Names
BTF2; BTF2BT2.2butyrophilin 2; BTN2; BTN2A2; Butyrophilin 2; butyrophilin subfamily 2 member A2; butyrophilin, subfamily 2, member A2; FLJ41908

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