Our portfolio of trusted, expertly-crafted resources includes Avi-tag biotinylated recombinant proteins that offer key advantages for researchers.

• Consistent labeling: Biotinylation only occurs on a single lysine residue within the Avi-tag.
• Uniform orientation: Precise control of biotinylation means the Avi-tag protein exhibits uniform orientation when binding to a streptavidin-coated surface.
• High bioactivity: Because biotinylation is restricted to the single, unique Avi-tag site, the natural binding activities of the target protein remains unaffected.

Our Avi-tag biotinylated proteins are held to the same rigorous quality testing standards as all of our recombinant proteins, resulting in equivalent bioactivity to that of non-biotinylated proteins. We internally test new lots with previous lots to also ensure high lot-to-lot consistency. Use our biotinylated recombinant proteins for protein detection, purification, functional analyses, and other protein research applications.

Find biotinylated proteins for your research.

Schematic showing a biotinylated antibody and the formation of a complex with Streptavidin and biotin conjugates.

Human CD86-Fc Chimera (Cat. No. 775602) is immobilized at 1.0 µg/mL. Biotinylated Recombinant Human CTLA-4-Fc Chimera binds with an EC₅₀ of 12 - 48 ng/mL. HRP Avidin (Cat. No. 405103) was used to detect the binding.

Human B7-H1 (PD-L1, CD274)-Fc chimera is immobilized at 1 μg/mL. Biotinylated recombinant human PD-1 (CD279)-Fc chimera binds in a dose-dependent manner. The EC₅₀ range for this effect is 25 - 100 ng/mL. HRP Avidin (Cat. No. 405103) was used to detect the binding.