Characterization of Critical Determinants of ACE2-RBD Interaction
Brown, E. E. F.; Rezaei, R.; Jamieson, T.; Dave, J.; Martin, N. T.; Singaravelu, R.; Crupi, M. J. F.; Boulton, S.; Tucker, S.; Duong, J.; Poutou, J.; Pelin, A.; Yasavoli-Sharahi, H.; Taha, Z.; Arulanandam, R.; Surendran, A.; Ghahremani, M.; Austin, B.; Matar, C.; Diallo, J.-S.; Bell, J. C.; Ilkow, C. S.; Azad, T.
Show abstract
Despite sequence similarity to SARS-CoV-1, SARS-CoV-2 has demonstrated greater widespread virulence and unique challenges to researchers aiming to study its pathogenicity in humans. The interaction of the viral receptor binding domain (RBD) with its main host cell receptor, angiotensin-converting enzyme 2 (ACE2), has emerged as a critical focal point for the development of anti-viral therapeutics and vaccines. Utilizing our recently developed NanoBiT technology-based biosensor, we selectively identify and characterize the impact of mutating certain amino acid residues in the RBD of SARS-CoV-2 and in ACE2. Specifically, we examine the mutational effects on RBD-ACE2 binding ability, before and after the addition of competitive inhibitors, as well as neutralizing antibody activity. These critical determinants of virus-host interactions may provide more effective targets for ongoing vaccines, drug development, and potentially pave the way for determining the genetic variation underlying disease severity.
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