Gfp Agarose Beads
Gfp Agarose Beads - Related Videos
13:46
Immunoprecipitation-Based Techniques: Purification of Endogenous Proteins Using Agarose Beads
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2023
Source: Susannah C. Shissler1, Tonya J. Webb1 1 Department of Microbiology and Immunology, University of Maryland, Baltimore, MD 21201 Immunoprecipitation (IP, also known as a 'pull-down' assay) is a widely used technique that has applications in a variety of fields. First conceived in 1984, it was refined in 1988 (1, 2). The fundamental goal of IP is purification and isolation of a specific protein using an antibody against that protein. The word "immuno" refers to the use of an antibody while...
07:59
Tracking Cells in GFP-transgenic Zebrafish Using the Photoconvertible PSmOrange System
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Cited by 2 •
2016
We established the photoconvertible PSmOrange system as a powerful, straight-forward and cost inexpensive tool for in vivo cell tracking in GFP transgenic backgrounds. This protocol describes its application in the zebrafish model system.
06:08
Using Linear Agarose Channels to Study Drosophila Larval Crawling Behavior
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Cited by 12 •
2016
The Drosophila larva is a powerful model system to study neural control of behavior. This publication describes the use of linear agarose channels to elicit sustained bouts of linear crawling and methods to quantify the dynamics of larval structures during repetitive crawling behavior.
04:26
Agarose-Based Preparation of Human Precision-Cut Lung Slices
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2025
In this video, we describe a procedure to inflate isolated human lungs with agarose and prepare human precision-cut lung slices. The prepared ex vivo lung slices can be used for further immunologic experiments.
02:35
DNA Agarose Gel Electrophoresis
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2021
Agarose gel electrophoresis is a laboratory technique commonly used to separate DNA fragments by size. However, it can also be used to isolate and purify DNA fragments using a gel extraction protocol. Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA. In cloning experiments, both the insert and vector DNA...
FAQs
Selectivity comes from the GFP-binding ligand attached to the agarose solid phase. GFP or a GFP-tagged protein binds to this ligand, whereas many other cellular components remain unbound. Washing then separates these fractions, reducing nonspecific material associated with the sample. This mechanism allows researchers to enrich fluorescently labeled proteins before biochemical analysis.
The ligand provides the molecular recognition needed to bind GFP-tagged material, while the agarose matrix provides a recoverable solid support. Together, they convert a binding event in a complex biological sample into a separable fraction. The matrix-bound material can be retained during washing and subsequently recovered for elution or examined directly.
Direct analysis keeps the captured fraction associated with the bead-based workflow and avoids making elution a necessary step. Elution, by contrast, releases the retained material for downstream examination as a separate sample. The choice depends on whether the experiment requires analysis of the bead-bound fraction or recovery of the captured protein material.
A typical workflow begins by exposing a biological sample to the beads so GFP or a GFP-tagged protein can bind the immobilized ligand. Unbound cellular components are removed through washing. The retained fraction is then either eluted or analyzed directly. This sequence supports enrichment before biochemical examination of the fluorescently labeled material.
They are useful when researchers need to examine GFP-tagged proteins from embryos, tissues, or cultured cells. The approach provides a way to move from a fluorescent labeling strategy to biochemical analysis, complementing observations of where and when a protein is expressed. It can therefore support studies connecting developmental protein patterns with molecular interactions and function.
Fluorescent labeling provides information about a protein's localization and expression, while capture with GFP agarose beads makes that labeled material available for biochemical analysis. Considering these types of information together can help researchers investigate whether observed developmental patterns correspond to molecular interactions or other functional behavior. This links imaging-based observations with molecular study.