Biotinylated Peg
Biotinylated Peg - Related Videos
07:50
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This article describes an electrophysiological method for isolating chemical stimulation to individual sensilla via extracellular, tip-recordings under mineral oil.
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A cell can regulate the amount of particular proteins on its cell membrane through endocytosis, following which cell surface proteins are effectively sequestered in the cytoplasm. Once within a cell, these surface proteins can be either destroyed or “recycled” back to the membrane. The cell surface biotinylation assay provides researchers with a way to study these phenomena. The technique makes use of a derivative of the small molecule biotin, which can label surface proteins and then be...
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04:54
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11:32
Mapping RNA-RNA Interactions Globally Using Biotinylated Psoralen
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Cited by 20 •
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Here, we detail the method of Sequencing of Psoralen crosslinked, Ligated, and Selected Hybrids (SPLASH), which enables genome-wide mapping of intramolecular and intermolecular RNA-RNA interactions in vivo. SPLASH can be applied to study RNA interactomes of organisms including yeast, bacteria and humans.
FAQs
The PEG segment provides a hydrophilic, flexible spacer between the biotin attachment site and the labeled or immobilized biomolecule. This separation can improve solubility and help reduce nonspecific interactions, allowing the biological component to be presented through a more accessible, controlled interface. That behavior is valuable when surface organization or selective molecular recognition affects experimental performance.
Biotin provides a specific binding handle for streptavidin or avidin. When a Biotinylated PEG reagent encounters one of these biotin-binding proteins, the interaction supports selective attachment rather than relying only on nonspecific association. This affinity is useful for connecting biomolecules to protein-based capture systems, surfaces, or engineered interfaces while retaining the advantages of the PEG spacer.
A defined linker or terminal functional group determines how the biotin-containing reagent connects to another molecule or interface. It therefore helps control the orientation, spacing, and chemical presentation of the attached component without eliminating the biotin recognition element. In labeling and immobilization experiments, this design can make molecular attachment more deliberate and reproducible.
Improved solubility helps the reagent remain compatible with biological systems, while reduced nonspecific interactions can limit unintended association with surrounding molecules or surfaces. Together, these properties support cleaner selective binding through the biotin group. They are especially relevant when researchers need a defined interface for biomolecule immobilization, labeling, or biosensor construction.
A general workflow begins by selecting a Biotinylated PEG design compatible with the biomolecule or surface of interest, then using its linker or terminal functionality for attachment. The resulting construct can be brought into contact with streptavidin or avidin to establish selective recognition. Researchers can then use the PEG-spaced presentation for labeling, immobilization, or controlled surface engineering.
For labeling, the reagent provides a biotin-based recognition handle while the PEG segment separates that handle from the protein or nucleic acid component. This arrangement can improve solubility and reduce unwanted interactions during use. The labeled biomolecule can consequently be addressed through streptavidin or avidin, supporting selective detection, capture, or organization in biological technique workflows.
These reagents are useful when an experiment requires a biological component to be selectively positioned at a cell surface, purification interface, or sensing surface. Biotin recognition supplies the addressable connection, and PEG helps create a more hydrated, flexible presentation. The same design supports affinity-based capture and biosensor construction while allowing researchers to control how biomolecules are displayed.