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Related Concept Videos

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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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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Leaky Scanning02:28

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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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Deciphering SARS-CoV-2 Virologic and Immunologic Features.

Grégorie Lebeau1,2, Damien Vagner1,3, Étienne Frumence1,2

  • 1Unité de Recherche Études Pharmaco-Immunologiques, Centre Hospitalier Universitaire La Réunion Site Félix Guyon, CS11021, 97400 Saint Denis de La Réunion, France.

International Journal of Molecular Sciences
|August 23, 2020
PubMed
Summary
This summary is machine-generated.

Severe acute respiratory syndrome coronavirus (SARS-CoV)-2 causes COVID-19, leading to severe illness and organ damage through a dysregulated immune response. Understanding its virology and immunology is crucial for developing effective immunotherapies and managing patient outcomes.

Keywords:
COVID-19SARS-CoV-2immunopathologyimmunotherapyvirus biology

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Area of Science:

  • Virology
  • Immunology
  • Pathophysiology

Background:

  • Severe acute respiratory syndrome coronavirus (SARS-CoV)-2 (COVID-19) poses a significant global health burden.
  • Understanding the pathophysiology of severe COVID-19 cases, particularly those requiring intensive care, is critical.
  • Tissue damage in COVID-19 can result from direct viral effects or an overactive immune response.

Purpose of the Study:

  • To review current knowledge on SARS-CoV-2 virologic and immunologic features.
  • To elucidate the virus's biology, life cycle, and organ tropism.
  • To examine the impact of SARS-CoV-2 on host functions, especially the immune response, and discuss therapeutic strategies.

Main Methods:

  • Literature review of SARS-CoV-2 virology.
  • Analysis of immunologic responses in severe COVID-19.
  • Review of current immunotherapies and clinical outcomes.

Main Results:

  • SARS-CoV-2 can trigger a dysregulated immune response in severe cases, leading to multi-organ injury.
  • The virus affects various host biological and physiological functions.
  • Knowledge gaps exist regarding the precise mechanisms of immune dysregulation and organ damage.

Conclusions:

  • A comprehensive understanding of SARS-CoV-2's virologic and immunologic aspects is essential for clinical management.
  • Further research into immune dysregulation is needed to develop targeted therapies.
  • Effective immunotherapies are crucial for improving clinical outcomes in severe COVID-19 patients.