Immunoglobulin G Fc
Immunoglobulin G Fc - Related Videos
04:48
A Paper-Based Immunoassay for the Detection of Immunoglobulin G
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2025
The video demonstrates a paper-based immunoassay, involving amine-functionalized cellulose discs cross-linked with glutaraldehyde. Covalent immobilization of IgG-Fc-specific capture antibodies, followed by the introduction of immunoglobulin G and horseradish peroxidase-conjugated detection antibodies, results in a color change confirming the presence of immunoglobulin G.
03:31
A Microfluidic Cartridge-Based Detection System for Allergen-Specific Immunoglobulin E
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2025
This video demonstrates a protocol for detecting serum-specific immunoglobulin E using a microfluidic cartridge-based chemiluminescence system. Serum IgEs interact with distinct allergens immobilized in the reaction zone of the cartridge, which are subsequently detected with peroxidase-conjugated anti-IgE antibodies and a chemiluminescent substrate, allowing simultaneous detection of multiple allergen-specific IgEs.
03:03
Measuring the Activation of Fc-Mediated Effector Functions by HA Antibodies
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2025
This video demonstrates an assay measuring the antibody-mediated activation of T cell effector functions. Adding an influenza virus hemagglutinin (HA)-specific monoclonal antibody to transfected mammalian cells expressing HA results in the formation of immune complexes with HA. Upon introducing engineered T cells expressing Fc receptors and a luciferase reporter, the T cells are activated by the antibody-HA complexes, and this activation is detected by adding a luciferase substrate and...
04:51
Measuring Immunoglobulin G Levels Against a Test Vaccine in a Mouse Serum
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2025
This video demonstrates a method for assessing the antibody immune response to a novel nanoemulsion adjuvant vaccine in pre-immunized mice. Immunization enhances antibody response as confirmed by determining the IgG antibody titers.
10:33
Isolation and Characterization Of Chimeric Human Fc-expressing Proteins Using Protein A Membrane Adsorbers And A Streamlined Workflow
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Cited by 3 •
2014
Compared with traditional affinity chromatography using protein A agarose bead-packed columns, protein A membrane adsorbers can significantly speed laboratory-scale isolation of antibodies and other Fc fragment-expressing proteins. Appropriate analysis and quantification methods can further accelerate protein processing, allowing isolation/characterization to be completed in one workday, instead of 20+ work hours.
FAQs
The paired CH2 and CH3 domains provide the Fc with the architecture needed to connect molecular recognition to downstream immune activity. Their arrangement presents interaction sites for Fc gamma receptors and supports complement-related activity, so changes affecting this constant region can influence both cellular signaling and immune clearance. This makes domain organization a central biochemical variable.
The N-linked glycan is not merely a structural decoration. It helps regulate how the Fc engages receptors and how strongly inflammatory activity is promoted. Consequently, glycan state can alter functional behavior and becomes an important variable when comparing Fc-dependent responses, characterizing antibody preparations, or interpreting differences in immune activity.
Fc gamma receptor binding provides a route from Fc-containing antibodies to immune-cell signaling, whereas complement activation represents a separate effector route. Considering both interactions is therefore important: an Fc preparation may be evaluated not only for receptor engagement but also for its capacity to recruit complement-related activity and influence immune clearance.
Analyses can focus on Fc structure, CH2 and CH3 domain organization, the N-linked glycan, receptor interactions, complement activity, stability, cellular signaling, and immune clearance. Examining these features together helps connect molecular properties with functional outcomes rather than treating binding data as isolated. This framework supports characterization of Fc-containing molecules and antibody-based systems.
Fc-containing fusion proteins exploit the region’s ability to extend molecular half-life. Incorporating Fc can help maintain a therapeutic or experimental molecule in a system for longer, while also providing properties that may recruit immune mechanisms. This design is useful when researchers want extended persistence together with Fc-dependent functional behavior.
Fc properties enable affinity-based assays in which Fc-containing molecules are selectively captured or detected. The region’s selective interactions can therefore be used analytically, not only biologically. This makes Fc useful for purification workflows and detection formats where selective binding helps distinguish the molecule of interest from other components in a biochemical sample.