Alpha Donor beads conjugated to streptavidin.
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|Product Number||Unit Size||List Price||Your Price||Quantity|
|6760002S||1 mg||339.00 USD|
|6760002||5 mg||1356.00 USD|
|6760002B||50 mg||9500.00 USD|
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These beads can be used to capture biotinylated antibodies, proteins, peptides, nucleic acids, and small molecules, and can be used in conjunction with AlphaScreen, AlphaLISA, or AlphaPlex Acceptor beads to create no-wash assays for:
In a typical Alpha assay, 1 mg of Donor beads is sufficient to run 1,000-2,000 wells using a 25 µL reaction volume. Bead concentration can be adjusted for optimal performance.
AlphaScreen® and AlphaLISA® are bead-based assay technologies used to study biomolecular interactions in a microplate format. The acronym ""Alpha"" stands for amplified luminescent proximity homogeneous assay. As the name implies, some of the key features of these technologies are that they are non-radioactive, homogeneous proximity assays. Binding of molecules captured on the beads leads to an energy transfer from one bead to the other, ultimately producing a luminescent/fluorescent signal. To understand how a signal is produced, one must begin with an understanding of the beads. AlphaScreen and AlphaLISA assays require two bead types: Donor beads and Acceptor beads. Each bead type contains a different proprietary mixture of chemicals, which are key elements of the AlphaScreen technology. Donor beads contain a photosensitizer, phthalocyanine, which converts ambient oxygen to an excited and reactive form of O2, singlet oxygen, upon illumination at 680 nm. Please note that singlet oxygen is not a radical; it is molecular oxygen with a single excited electron. Like other excited molecules, singlet oxygen has a limited lifetime prior to falling back to ground state. Within its 4 µsec half-life, singlet oxygen can diffuse approximately 200 nm in solution. If an Acceptor bead is within that proximity, energy is transferred from the singlet oxygen to thioxene derivatives within the Acceptor bead, subsequently culminating in light production at 520-620 nm (AlphaScreen) or at 615 nm (AlphaLISA). In the absence of an Acceptor bead, singlet oxygen falls to ground state and no signal is produced. This proximity-dependent chemical energy transfer is the basis for AlphaScreen's homogeneous nature.
Disclaimer: For research use only. Not for use in diagnostic procedures.
|Bead Type or Core Bead Type||Alpha Donor|
|One Unit Contains||5 mg|
|Product Brand Name||Alpha|
|Shipping Condition||Blue Ice|
|Unit Size||5 mg|
|Resource Type||File Name||File Format|
|Brochure||Alpha Technology Solutions||PDF 4 MB|
|Brochure||Handle Large Biomolecular Interactions With Ease||PDF 798 KB|
|Guide||Alpha Protein-Protein Interaction Quick Start Guide||PDF 380 KB|
|Guide||AlphaLISA immunoassay development quick guide||PDF 1 MB|
|Guide||ELISA to AlphaLISA Immunoassay Conversion Guide||PDF 1 MB|
|Guide||User's Guide To Alpha Assays Protein:Protein Interactions||PDF 3 MB|
|Application Note||AlphaLISA GMO Protein Detection Seed Extract||PDF 1 MB|
|Application Note||Immunogenicity Assessment Using the AlphaLISA Technology||PDF 289 KB|
|Technical Note||AlphaLISA Assay for Measurement of Core Fucosylated Glycoproteins Using LCA Lectin||PDF 1011 KB|
|Technical Note||AlphaLISA Ligand Binding Assays for Measurement of Human Immunoglobulin G Subclasses in Animal Sera||PDF 838 KB|
|Technical Note||AlphaLISA Tau-Ser400 O-GlcNAc hydrolase (OGA) Assay||PDF 650 KB|
|Poster||Comparison of endogenous methyl marks on histone H3 in cancer-derived cell lines using AlphaLISA||PDF 1 MB|
|Poster||Tau Duplex Assay Poster||PDF 515 KB|