Recombinant Human BTN2A2/Butyrophilin 2A2 Fc Protein, CF

Recombinant Human BTN2A2/Butyrophilin 2A2 Fc Protein, CF Summary

Product Specifications

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.

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).

Related Research Areas

• Butyrophilins
• Co-stimulatory and Co-inhibitory Molecules
• Search Immune Checkpoint Targets