BTN1A1, Butyrophilin, BTN
Human BTN1A1 / Butyrophilin Protein, Fc Tag, Ala 27 - Arg 242 (Accession # AAH96312) was produced in human 293 cells (HEK293) at ACROBiosystems.
Human BTN1A1, Fc Tag is fused with a human IgG1 Fc tag at the C-terminus, and has a calculated MW of 50.6 kDa. The predicted N-terminus is Ala 27. As a result of glycosylation, the reducing (R) protein migrates as 55-66 kDa, and the non-reducing (NR) protein migrates as 116-130 kDa in SDS-PAGE.
Less than 1.0 EU per μg by the LAL method.
>95% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in 50 mM tris, 100 mM glycine, pH7.5. Normally Trehalose is added as protectant before lyophilization.
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See Certificate of Analysis for reconstitution instructions and specific concentrations.
Avoid repeated freeze-thaw cycles.
No activity loss was observed after storage at:
In lyophilized state for 1 year (4°C); After reconstitution under sterile conditions for 3 months (-70°C).
Butyrophilin subfamily 1 member A1 (BTN1A1) is also known as BTN, which is a member of the immunoglobulin superfamily and the major protein associated with fat droplets in the milk. BTN1A1 may have a cell surface receptor function. The human butyrophilin gene is localized in the major histocompatibility complex (MHC) class I region of 6p and may have arisen relatively recently in evolution by the shuffling of exons between 2 ancestral gene families. Furthermore, BTN1A1 regulates the amount of lipids and size of droplets expressed in milk and inhibits the proliferation of CD4 and CD8 T-cells activated by anti-CD3 antibodies, T-cell metabolism and IL2 and IFNG secretion.
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