Avidin Biotin Tether
Avidin Biotin Tether - Related Videos
03:12
An Avidin-Biotin Conjugation Technique for Presenting Target Antigens on Mycobacterium bovis BCG
0 Views •
2025
The video demonstrates a technique for loading antigens on Mycobacterium bovis BCG to improve its immunogenic properties. The method uses the avidin-biotin system to coat the bacterial surface with exogenous antigens.
05:43
An In Vitro Assay to Study Platelet Migration Using RGD-Functionalized Avidin-Biotin Tethers
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2024
A detailed protocol for imaging single migrating platelets using RGD-functionalized avidin-biotin tethers with tunable density is provided, revealing that platelets generate enough force to rupture the avidin-biotin bond.
10:11
Expression of Exogenous Antigens in the Mycobacterium bovis BCG Vaccine via Non-genetic Surface Decoration with the Avidin-biotin System
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2018
A novel technique for rapid antigen display on a bacterial surface is presented, which involves surface biotinylation followed by exposure to proteins of interest in fusion with monomeric avidin. Loading BCG with selected antigens successfully improves its immunogenicity, suggesting that surface decoration can replace traditional genetic approaches.
08:51
Visualization of Surface-tethered Large DNA Molecules with a Fluorescent Protein DNA Binding Peptide
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Cited by 7 •
2016
We present an approach for visualizing fluorescent protein DNA binding peptide (FP-DBP)-stained large DNA molecules tethered on the polyethylene glycol (PEG) and avidin-coated glass surface and stretched with microfluidic shear flows.
07:42
A Simple Flight Mill for the Study of Tethered Flight in Insects
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Cited by 37 •
2015
Flight in insects is influenced by a number of factors and the propensity to disperse is an important variable in understanding insect ecology and biological control strategies. We describe the construction and use of a simple, relatively inexpensive, and flexible flight mill for measuring parameters of tethered flight in insects.
FAQs
Avidin’s four biotin-binding sites provide multivalent attachment, so one avidin molecule can participate in a robust connection between labeled components. This site multiplicity helps maintain association when the tether is used in aqueous biological conditions. It also gives researchers a way to build linkages that remain stable while connecting more than one molecular element.
The avidin-biotin pairing is useful because it combines highly specific recognition with strong attachment. Biotinylated molecules can therefore be connected to avidin-bearing surfaces or probes without abandoning aqueous biological conditions. This balance matters when the experimental goal is controlled molecular positioning, since the tether can hold components together while retaining an adaptable connection between them.
Linker design controls the physical character of the connection rather than replacing the avidin-biotin recognition step. By incorporating an adaptable linker, researchers can preserve flexibility between interacting components while still using the strong binding interaction. This is important when molecular orientation or spacing affects how precisely a biomolecule, surface, or probe is positioned.
To build an avidin-biotin tether, a researcher first provides the molecule, surface, or probe with a biotinylated component, then introduces avidin so the binding sites can connect the components. The resulting assembly can be arranged as an immobilized molecule, labeled probe, or surface-linked construct. Linker choice is then used to preserve the desired flexibility.
Protein immobilization uses the interaction to hold a selected biomolecule in a defined attachment scheme, whereas fluorescent labeling connects a detectable probe to a target. Affinity purification uses the same selective pairing to help associate a biotinylated molecule with an avidin-based capture setup. These applications adapt one molecular interaction to localization, detection, or separation-oriented workflows.
Molecular force assays use these tethers when researchers need to measure or manipulate biological interactions with controlled molecular connections. The strong avidin-biotin association helps maintain attachment during the assay, while flexible linker designs can preserve movement between connected components. This combination supports precise positioning and makes the tether useful for relating molecular connections to interaction behavior.