Proteins Nsp12 and 13 of SARS-CoV-2 Have Mitochondrial Recognition Signal: A Connection with Cellular Mitochondrial Dysfunction and Disease Manifestation

Upasana Ray; Feroza Begum

doi:10.20944/preprints202006.0352.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 28 June 2020 / Approved: 29 June 2020 / Online: 29 June 2020 (10:40:07 CEST)

Mitochondria are classically termed as powerhouse of a mammalian cell. Most of the cellular chemical energy in the form of adenosine tri phosphate (ATP) is generated by mitochondria and dysregulation of mitochondrial functions thus can be potentially fatal of cellular homeostasis and health. Acute respiratory distress has been earlier linked to mitochondrial dysfunction. SARS-CoV-2 infection severity leads to acute respiratory distress syndrome (ARDS) and can be fatal. We tried to investigate possible connection between SARS-CoV-2, ARDS and mitochondria. Here, we report identification of SARS-CoV-2 non-structural proteins (particularly Nsp12 and 13) that have recognition sequence with respect to mitochondrial entry. We also report that these proteins can potentially shuttle between cytoplasm and mitochondria based on the localization signals and help in downstream maintenance of the virus. Their properties to use ATP for enzymatic activities may cause ATP scavenging allowing viral RNA functions in lieu of host cell health.

SARS-CoV-2; ARDS; non-structural proteins; mitochondria

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Proteins Nsp12 and 13 of SARS-CoV-2 Have Mitochondrial Recognition Signal: A Connection with Cellular Mitochondrial Dysfunction and Disease Manifestation

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