The Streptavidin coated AlphaPlex™ 545 (Terbium) Acceptor beads are used to capture a wide variety of biotinylated reagents, ranging from small nucleotides to very large proteins. To avoid steric hindrance, it is recommended to use biotin derivatives including an aliphatic spacer composed of at least six carbons. These beads can be used in conjunction with Alpha Donor beads to create no-wash assays for:

• Protein-protein interactions
• Protein-DNA interactions
• Protein-RNA interactions
• Protein-small molecule interactions
• Analyte detection
• Biomarker detection
• Antibody detection
• Enzymatic assays
• Other immunoassays

AlphaPlex Acceptor beads are intended to be used in multiplexing assays, in conjunction with AlphaLISA Acceptor beads and Alpha Donor beads. In a typical Alpha assay, 1 mg of Acceptor beads is sufficient to run 1,000-2,000 wells using a 50 µL reaction volume.