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The Coronavirus helicase in replication

Samantha L Grimes1, Mark R Denison1

  • 1Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.

Virus Research
|May 25, 2024
PubMed

Insights

The coronavirus nonstructural protein 13 RNA helicase (nsp13-HEL) is vital for viral replication and a key target for antiviral drugs. Research into its functions may lead to new helicase inhibitors.

Area of Science:

  • Virology
  • Molecular Biology
  • Biochemistry

Background:

  • Coronaviruses utilize nonstructural protein 13 RNA helicase (nsp13-HEL) for replication.
  • nsp13-HEL possesses essential unwinding and nucleoside triphosphatase (NTPase) activities.
  • Enzymatic inactivation of nsp13-HEL is a critical target for antiviral development.

Purpose of the Study:

  • To review the reported and proposed functions of coronavirus nsp13-HEL in viral replication.
  • To highlight research areas for developing nsp13-HEL inhibitors.

Main Methods:

  • Literature review of genetic and biochemical studies.
  • Analysis of structurally-related helicases.
  • Exploration of nsp13-HEL's enzymatic functions beyond canonical activities.

Main Results:

  • nsp13-HEL is confirmed as essential for viral replication.
  • Evidence supports novel roles for nsp13-HEL in coronavirus biology.
  • Potential new hypotheses for nsp13-HEL's function in replication are presented.

Conclusions:

  • nsp13-HEL is a high-priority target for antiviral drug discovery.
  • Further research into nsp13-HEL's diverse functions is crucial.
  • Understanding nsp13-HEL mechanisms can guide the development of effective helicase inhibitors.
Keywords:
COVID-19CoronavirusNidoviralesRNA helicaseReplicaseReviewSARS-CoV-2Sarbecovirusnsp13

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