BTN2A1 (Protein | Antibody | cDNA Clone | ELISA Kit)

All BTN2A1 reagents are produced in house and quality controlled, including 13 BTN2A1 Gene, 1 BTN2A1 qPCR. All BTN2A1 reagents are ready to use.

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BTN2A1 Related Research Area

BTN2A1 Background

The MHC-encoded butyrophilin, BTN2A1, is a cell surface glycoprotein related to the extended family of B7 costimulatory molecules. BTN2A1 mRNA was expressed in most human tissues, but protein expression was significantly lower in leukocytes. An Ig-fusion protein of BTN2A1 bound to immature monocyte-derived dendritic cells. Binding diminished upon MoDC maturation and no binding was detected to Langerhans cells. Induction of the counterreceptor was IL-4 dependent and occurred early during dendritic cell differentiation. The interaction required the presence of Ca2+ and was mediated by high-mannose oligosaccharides. These properties matched DC-SIGN, a DC-specific HIV-1 entry receptor. This was confirmed by binding of soluble BTN2A1 to DC-SIGN-transfectants and its inhibition by a specific Ab. DC-SIGN bound to native BTN2A1 expressed on a range of tissues. However, BTN2A1 was not recognized on some normal cells such as HUVECs despite a similar expression level. The BTN2A1 of tumor cells such as HEK293T have more high-mannose moieties in comparison to HUVECs, and those high-mannose moieties are instrumental for binding to DC-SIGN.

BTN2A1 References

  • Malcherek G, Mayr L, Roda-Navarro P, et al. The B7 homolog butyrophilin BTN2A1 is a novel ligand for DC-SIGN[J]. The Journal of Immunology, 2007, 179(6): 3804-3811.