Primary Antibody Binding
Primary Antibody Binding - Related Videos
05:31
A Multiplex Immunostaining Method Using Primary Antibodies from the Same Host Species
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2025
This video demonstrates an assay to perform multiplex immunostaining using primary antibodies from the same host species. In this method, an adrenal tissue section undergoes a two-step immunostaining process. Initially, the section is stained with antibodies specific for markers in the cortex, followed by stripping the bound antibody and restaining with antibodies specific for markers in the medulla.
03:18
Antibody-Dependent Enhancement of Zika Virus by Dengue Antibodies in Human Primary Macrophages
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2026
Source: Asad, S., et al. Quantification of Antibody-dependent Enhancement of the Zika Virus in Primary Human Cells. J. Vis. Exp. (2019)This video demonstrates antibody-dependent enhancement of Zika virus infection in human primary macrophages, using dengue antibody–virus complexes to model how cross-reactive antibodies facilitate Fcγ receptor–mediated viral entry and replication for studying infection mechanisms and immune interactions.
15:27
Determination of High-affinity Antibody-antigen Binding Kinetics Using Four Biosensor Platforms
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Cited by 30 •
2017
We describe here protocols for the measurement of antibody-antigen binding affinity and kinetics using four commonly used biosensor platforms.
11:10
Antibody Binding Specificity for Kappa (Vκ) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study
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Cited by 2 •
2016
We present a protocol to identify protein moieties containing antigens for human and mouse IgM antibodies with specific kappa (Vκ) light chains. This protocol is not limited to IgM class antibodies but applies to all immunoglobulin isotypes that target their antigen with sufficiently high affinity during immunoprecipitations.
07:39
Determining Binding Affinity (KD) of Radiolabeled Antibodies to Immobilized Antigens
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2022
Here, a method is described to determine the binding affinity (KD) of radiolabeled antibodies to immobilized antigens. KD is the equilibrium dissociation constant that can be determined from a saturation binding experiment by measuring the total, specific, and nonspecific binding of a radiolabeled antibody at various concentrations to its antigen.
FAQs
Binding conditions act as controllable determinants of assay performance. Changes in pH, salt concentration, temperature, or antibody concentration can alter the strength and selectivity of the interaction, so these variables affect whether the target is recognized reliably. Controlling them is especially important when comparing protein signals across nervous-tissue samples.
The variable region provides the molecular features that accommodate a complementary epitope, the particular antigenic site being recognized. Hydrogen bonds, electrostatic forces, and hydrophobic contacts collectively support attachment rather than a single type of interaction. This molecular complementarity helps distinguish selected neurotransmitter receptors, ion channels, or neuronal markers from other sample components.
Antibody concentration can influence both the strength and selectivity of primary antibody binding. Increasing or decreasing it may therefore change how clearly the selected antigen is represented relative to other sample components. In neuroscience experiments, keeping this variable controlled supports more consistent detection of receptors, channels, and neuronal markers across preparations.
Different readouts make the same binding principle useful in different ways. Immunohistochemistry and immunofluorescence support localization of selected proteins in nervous tissue, whereas Western blotting supports measurement of protein expression. Choosing among them depends on whether the study prioritizes spatial organization, visual detection, or comparative protein levels.
In neuroscience, the target chosen for binding determines which biological feature becomes visible or measurable. Receptors and ion channels can indicate molecular components of neuronal signaling, while neuronal markers help identify cellular populations or organization. Applying the interaction to these targets allows investigators to connect protein distribution or expression with the structure and condition of nervous tissue.
Reliable binding improves signal specificity, which makes observed signals more informative. In nervous-tissue studies, the resulting evidence can reveal cellular organization, indicate where selected proteins are localized, and support assessment of protein-expression changes associated with disease. Interpretation remains tied to the binding conditions because those variables influence interaction strength and selectivity.