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Antibody Structure

Antibody Structure

Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...

Hybridoma Technology

Hybridoma Technology

Hybridoma technology is used for the large-scale production of monoclonal antibodies. Monoclonal antibodies bind to only a single antigenic determinant or epitope. Such antibodies are used in research, diagnostics, and disease therapy. The hybridoma technology established in 1975 by Georges Köhler and Cesar Milstein was awarded the Nobel Prize in Medicine in 1984 for revolutionizing research and therapy.
Hybridoma Selection
Commonly used fusion techniques — electroporation,...

Antibody Structure and Classes

Antibody Structure and Classes

Antibodies, also known as immunoglobulins, are produced by B cells in response to foreign substances, such as bacteria and viruses. These proteins are critical for recognizing and neutralizing these substances, protecting the body from potential harm.
The basic structure of an antibody consists of four protein chains: two identical heavy chains and two identical light chains. These chains are held together by disulfide bonds and other non-covalent interactions, forming a Y-shaped structure.

Antibody Actions

Antibody Actions

Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...

Humoral Immune Responses

Humoral Immune Responses

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Related Experiment Video

Updated: May 2, 2026

Genetic Encoding of a Non-Canonical Amino Acid for the Generation of Antibody-Drug Conjugates Through a Fast Bioorthogonal Reaction

Genetic Encoding of a Non-Canonical Amino Acid for the Generation of Antibody-Drug Conjugates Through a Fast Bioorthogonal Reaction

Published on: September 14, 2018

Chemically programmed antibodies.

Christoph Rader¹

¹Department of Cancer Biology, The Scripps Research Institute, Scripps Florida, 130 Scripps Way #2C1, Jupiter, FL 33458, USA; Department of Molecular Therapeutics, The Scripps Research Institute, Scripps Florida, 130 Scripps Way #2C1, Jupiter, FL 33458, USA.

Trends in Biotechnology

|March 18, 2014

Summary

This summary is machine-generated.

Chemically programmed antibodies (cpAbs) combine small molecules and monoclonal antibodies (mAbs) for enhanced specificity and cost-effectiveness. This innovative approach accelerates drug discovery and development for various human diseases.

Keywords:

covalent conjugation monoclonal antibody pharmaceutical site-specific conjugation small molecule

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Published on: December 23, 2016

Area of Science:

Biochemistry
Immunology
Drug Development

Background:

Small molecules offer diverse specificity and affinity, rivaling monoclonal antibodies (mAbs).
Monoclonal antibodies possess unique pharmacological properties not matched by small molecules.
Current limitations in small molecule drug development necessitate novel therapeutic strategies.

Purpose of the Study:

To introduce chemically programmed antibodies (cpAbs) as a novel therapeutic modality.
To highlight the advantages of cpAbs in overcoming limitations of both small molecules and mAbs.
To underscore the economic and developmental benefits of cpAb technology.

Main Methods:

Development of chemical programming strategies for site-specific and covalent conjugation of small molecules to mAbs.
Utilizing unique reactivity centers on mAbs for precise small molecule attachment.
Leveraging established mAb platforms for versatile cpAb generation.

Main Results:

Chemically programmed antibodies (cpAbs) successfully blend the specificity of small molecules with the pharmacological advantages of mAbs.
cpAbs demonstrate significant economic attractiveness by enabling a single mAb scaffold for multiple target specificities.
Reduced manufacturing costs and accelerated drug discovery and development timelines are key outcomes.
Early preclinical and clinical data indicate broad utility for disease treatment and prevention.

Conclusions:

Chemically programmed antibodies (cpAbs) represent a powerful platform for next-generation therapeutics.
This approach offers a cost-effective and time-efficient method for developing targeted therapies.
cpAbs show significant promise for the treatment and prevention of diverse human diseases.