Protein Marker Detection
Protein Marker Detection - Related Videos
05:44
The c-FOS Protein Immunohistological Detection: A Useful Tool As a Marker of Central Pathways Involved in Specific Physiological Responses In Vivo and Ex Vivo
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Cited by 44 •
2016
Here, we present a protocol based on c-FOS protein immunohistological detection, a classical technique used for the identification of neuronal populations involved in specific physiological responses in vivo and ex vivo.
09:00
Detection of Protein Ubiquitination
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Cited by 96 •
2009
Ubiquitination is a key posttranslational modification carried out by a set of three enzymes. Mutations of genes involved in this modification are associated with many different human diseases. Here, we describe protocols to detect protein ubiquitination in cultured cells in vivo and test tubes in vitro.
03:41
Fluorescence Anisotropy-Based Detection of Protein-Protein Interactions
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2025
In this video, we describe the fluorescence anisotropy technique to study the interactions between the fluorophore-tagged Shwachman-diamond syndrome (SBDS) protein and the elongation factor-like 1 GTPase (EFL1). On incubating SBDS proteins with gradually increasing concentrations of EFL1, a steady increase in anisotropy is observed, indicating a successful interaction between the two proteins.
07:42
In-vivo Detection of Protein-protein Interactions on Micro-patterned Surfaces
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Cited by 7 •
2010
This video shows experiments with subsequent analysis of protein-protein interactions by the use of micro-patterned surfaces. The approach offers the possibility to detect protein interactions in living cells and combines high throughput capabilities with the possibility to extract quantitative information.
06:15
Biotinylated Cell-Penetrating Peptide Probe to Detect Protein-Protein Interactions
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2025
This video demonstrates a technique that uses biotinylated cell-penetrating peptides to detect intracellular protein-protein interactions. The cell-penetrating peptides facilitate the conjugated peptide to enter a cell and specifically bind to its interacting proteins. The biotin, after binding to avidin, allows purification of the interacting proteins’ complex from a cell lysate.
FAQs
Affinity reagents, including antibodies, are selected for their ability to bind particular target proteins. This selective binding links the presence of a protein to a measurable signal, allowing investigators to distinguish relevant cellular or biological features from other material in a sample. The quality of this binding directly affects how confidently a marker can be interpreted.
Marker selection connects the measurement to the biological question. Neuronal markers can help characterize neurons, glial markers can identify glial cells, and synaptic or disease-associated markers can focus analysis on communication-related structures or pathological states. Matching the marker to the question supports interpretation of cellular organization, disease mechanisms, or responses to treatment.
Quantitative analysis estimates how strongly a marker is present rather than recording only whether it can be detected. Comparing measured levels across tissues, biological states, injury conditions, or treatment groups can reveal changes associated with disease or intervention. These measurements may also contribute to biomarker development and evaluation of experimental therapies.
A typical workflow begins by exposing the sample to an antibody or another affinity reagent directed toward the target protein. After binding occurs, a signal is generated and then measured. Immunohistochemistry, immunofluorescence, and Western blotting provide different experimental formats for carrying out this sequence, depending on the sample and the intended analysis.
These methods are useful when investigators need to examine protein markers in different neuroscience research settings. They can support characterization of neural cells and structures, assessment of tissue changes after injury or treatment, or investigation of disease-associated proteins. The selected method provides the format in which the target-associated signal is generated and measured.
Researchers can use marker measurements to compare normal and disease-associated biological states, examine changes following injury, and evaluate responses to experimental treatment. Patterns involving neuronal, glial, synaptic, or disease-associated proteins can help investigate mechanisms underlying brain function and neurological disorders while also supplying evidence for biomarker development and therapy assessment.