The intraviral protein-protein interaction of SARS-CoV-2 reveals the key role of N protein in virus-like particle assembly.

Intraviral protein-protein interactions (PPIs) of SARS-CoV-2 in host cells may provide useful information for deep understanding of virology of SARS-CoV-2. In this study, 22 of 55 interactions of the structural and accessory proteins of SARS-CoV-2 were identified by biomolecular fluorescence complementation (BiFC) assay. The nucleocapsid (N) protein was found to ...
have the most interactions among the structural and accessory proteins of SARS-CoV-2, and also specifically interacted with the putative packaging signal (PS) of SARS-CoV-2. We also demonstrated that the PS core containing PS576 RNA bears a functional PS, important for the assembly of the viral RNA into virus like particles (VLPs), and the packaging of SARS-CoV-2 RNA was N dependent.
Mesh Terms:
Coronavirus Nucleocapsid Proteins, HEK293 Cells, Humans, Phosphoproteins, Protein Interaction Maps, SARS-CoV-2, Virus Assembly
Int J Biol Sci
Date: Oct. 22, 2021
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