Cited by 67SARS-CoV-2 and COVID-19 ResearchAnimal Virus Infections StudiesCOVID-19 Clinical Research Studies

Coronavirus entry: how we arrived at SARS-CoV-2

Open access
Whittaker, Gary R, Daniel, Susan, Millet, Jean K·2021·Current Opinion in Virology

Abstract

Because of the COVID-19 pandemic, the novel coronavirus SARS-CoV-2 has risen to shape scientific research during 2020, with its spike (S) protein being a predominant focus. The S protein is likely the most complicated of all viral glycoproteins and is a key factor in immunological responses and virus pathogenesis. It is also the driving force dictating virus entry mechanisms, which are highly 'plastic' for coronaviruses, allowing a plethora of options for different virus variants and strains in different cell types. Here we review coronavirus entry as a foundation for current work on SARS-CoV-2. We focus on the post-receptor binding events and cellular pathways that direct the membrane fusion events necessary for genome delivery, including S proteolytic priming and activation. We also address aspects of the entry process important for virus evolution and therapeutic development.

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Crossref · 10.1016/j.coviro.2021.02.006

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  • The S2' cleavage site activates membrane fusion and creates an internal fusion peptide within the S2 domain.

    “The S2' cleavage site plays an important role in the activation of membrane fusion and creates an internal fusion peptide within the S2 domain [19].”
  • At the S2' site, type II serine proteases cleave the cell surface and cysteine-type cathepsin protease cleaves intracellularly, indicating multiple activation triggers for efficient SARS-CoV-2 infection.

    “In the process of fusion at the S2' site, the type II serine proteases cleave the cell surface, and cysteine-type cathepsin protease is responsible for the intracellular compartment cleavage, which indicates the possibility of the multiple activation triggers set up by the SARS-CoV-2 to infect the cell with critical efficiency [19].”

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2 of the 72 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. [67]Morse SS: Emerging Viruses: Oxford University Press; 1996.

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Authors
Whittaker, G. R., Daniel, S., & Millet, J. K.
Affiliations
  • Cornell University (US)
  • Université de Versailles Saint-Quentin-en-Yvelines (FR)
Corresponding author
Whittaker, Gary R
Venue
Current Opinion in Virology
Publisher
Elsevier BV
Published
2021-04
Volume
47
Pages
113-120
ISSN
1879-6257 (ISSN-L)
OpenAlex
W3134724518
Cited by
67
References
72
Citations by year
2026: 3 · 2025: 5 · 2024: 12 · 2023: 8 · 2022: 20 · 2021: 19
FWCI
1.73
Type
journal article
Language
en
Open access
Locations
  • Current Opinion in Virology (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, cc-by-nc-nd)
Funders
NIH
Topics
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
  • Health Sciences › Medicine › Infectious Diseases › COVID-19 Clinical Research Studies
Keywords
SARS-CoV-2, coronavirus entry, spike protein, membrane fusion, receptor binding, viral glycoproteins, viral evolution, antiviral agents, COVID-19 pandemic
MeSH terms
COVID-19, SARS-CoV-2, COVID-19 Drug Treatment, Humans, Signal Transduction, Virus Internalization, Spike Glycoprotein, Coronavirus

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