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Electrostatic Map of the SARS-CoV-2 Virion Specifies Binding Sites of the Antiviral Cationic Photosensitizer.
Fedorov, Vladimir; Kholina, Ekaterina; Khruschev, Sergei; Kovalenko, Ilya; Rubin, Andrew; Strakhovskaya, Marina.
  • Fedorov V; Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia.
  • Kholina E; Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia.
  • Khruschev S; Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia.
  • Kovalenko I; Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia.
  • Rubin A; Federal Scientific and Clinical Center of Specialized Types of Medical Care and Medical Technologies, Federal Medical and Biological Agency of Russia, 115682 Moscow, Russia.
  • Strakhovskaya M; Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia.
Int J Mol Sci ; 23(13)2022 Jun 30.
Article in English | MEDLINE | ID: covidwho-1917518
ABSTRACT
Electrostatics is an important part of virus life. Understanding the detailed distribution of charges over the surface of a virus is important to predict its interactions with host cells, antibodies, drugs, and different materials. Using a coarse-grained model of the entire viral envelope developed by D. Korkin and S.-J. Marrink's scientific groups, we created an electrostatic map of the external surface of SARS-CoV-2 and found a highly heterogeneous distribution of the electrostatic potential field of the viral envelope. Numerous negative patches originate mainly from negatively charged lipid domains in the viral membrane and negatively charged areas on the "stalks" of the spike (S) proteins. Membrane (M) and envelope (E) proteins with the total positive charge tend to colocalize with the negatively charged lipids. In the E protein pentamer exposed to the outer surface, negatively charged glutamate residues and surrounding lipids form a negative electrostatic potential ring around the channel entrance. We simulated the interaction of the antiviral octacationic photosensitizer octakis(cholinyl)zinc phthalocyanine with the surface structures of the entire model virion using the Brownian dynamics computational method implemented in ProKSim software (version r661). All mentioned negatively charged envelope components attracted the photosensitizer molecules and are thus potential targets for reactive oxygen generated in photosensitized reactions.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Experimental Studies / Prognostic study / Randomized controlled trials Limits: Humans Language: English Year: 2022 Document Type: Article Affiliation country: Ijms23137304

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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Experimental Studies / Prognostic study / Randomized controlled trials Limits: Humans Language: English Year: 2022 Document Type: Article Affiliation country: Ijms23137304