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Related Concept Videos

Antibody Actions01:26

Antibody Actions

1.3K
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...
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Cross-reactivity00:42

Cross-reactivity

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Overview
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Conjugated Proteins02:50

Conjugated Proteins

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Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
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Related Experiment Video

Updated: Aug 28, 2025

Detection of SARS-CoV-2 Neutralizing Antibodies using High-Throughput Fluorescent Imaging of Pseudovirus Infection
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Structure-based neutralizing mechanisms for SARS-CoV-2 antibodies.

Qingrui Huang1, Xiaonan Han1, Jinghua Yan1,2

  • 1CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People's Republic of China.

Emerging Microbes & Infections
|September 15, 2022
PubMed
Summary

Antibody therapeutics against SARS-CoV-2 are advancing rapidly. Understanding the molecular mechanisms of neutralizing antibodies is key for developing effective treatments and next-generation vaccines.

Keywords:
SARS-CoV-2antibody structureneutralizing antibodyneutralizing mechanismpan-coronavirus vaccine

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Area of Science:

  • Immunology
  • Structural Biology
  • Virology

Background:

  • The COVID-19 pandemic spurred significant research into antibody-based therapeutics against SARS-CoV-2.
  • Numerous monoclonal antibodies (mAbs) targeting the SARS-CoV-2 spike protein have been developed.
  • Neutralizing antibodies are crucial for host protection against viral infection.

Purpose of the Study:

  • To review the latest understanding of antibody neutralizing mechanisms against SARS-CoV-2.
  • To highlight the molecular and structural insights into antibody-mediated neutralization.
  • To inform the optimization of antibody therapeutics and vaccine development.

Main Methods:

  • Review of recent scientific literature on SARS-CoV-2 antibody therapeutics.
  • Analysis of structural biology data, particularly from cryo-electron microscopy (cryo-EM).
  • Examination of molecular mechanisms of antibody neutralization.

Main Results:

  • A large number of mAbs targeting diverse epitopes on the spike protein have been identified.
  • Cryo-EM has provided detailed structural insights into how these mAbs neutralize SARS-CoV-2.
  • Understanding these mechanisms is vital for therapeutic efficacy.

Conclusions:

  • Continued research into antibody neutralizing mechanisms is critical.
  • Structural insights are accelerating the development of effective antibody therapies.
  • This knowledge will aid in designing next-generation pan-coronavirus vaccines.