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The molecular biology of coronaviruses

Paul S Masters1

  • 1Wadsworth Center, New York State Department of Health, Albany, 12201, USA.

Advances in Virus Research
|August 1, 2006
PubMed

Insights

Coronaviruses, including the one causing SARS, use unique molecular strategies for gene expression and replication. Advances in reverse genetics aid the study of these large RNA viruses, focusing on receptors, RNA synthesis, and assembly.

Area of Science:

  • Virology
  • Molecular Biology
  • Genetics

Background:

  • Coronaviruses are significant medical and veterinary RNA viruses.
  • Recent emergence of a novel coronavirus causing Severe Acute Respiratory Syndrome (SARS) has increased research interest.
  • Coronaviruses exhibit complex gene expression and replication strategies.

Purpose of the Study:

  • To review classical and contemporary discoveries in coronavirus molecular biology.
  • To emphasize viral receptor interactions, RNA synthesis, and virion assembly.
  • To highlight the impact of reverse genetic systems on coronavirus research.

Main Methods:

  • Literature review of established and recent findings.
  • Focus on molecular mechanisms of viral replication and assembly.
  • Discussion of reverse genetics in studying large RNA virus genomes.

Main Results:

  • Coronaviruses utilize unusual strategies for gene expression, including ribosome frameshifting.
  • Viral RNA synthesis involves genomic and multiple subgenomic RNA species.
  • Virion assembly follows a unique pathway among enveloped RNA viruses.
  • Reverse genetic systems have overcome challenges posed by large coronavirus genomes.

Conclusions:

  • Understanding coronavirus molecular biology is crucial due to their medical and veterinary importance.
  • Key areas of focus include viral receptors, RNA synthesis, and assembly mechanisms.
  • Advancements in reverse genetics facilitate deeper investigation into these complex viruses.

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