Abstract
Variants of the SARS-CoV-2 virus continue to remain a threat 2 years from the beginning of the pandemic. As more variants arise, and the B.1.1.529 (Omicron) variant threatens to create another wave of infections, a method is needed to predict the binding affinity of the spike protein quickly and accurately with human angiotensin-converting enzyme II (ACE2). We present an accurate and convenient energy minimization/molecular mechanics Poisson-Boltzmann surface area methodology previously used with engineered ACE2 therapeutics to predict the binding affinity of the Omicron variant. Without any additional data from the variants discovered after the publication of our first model, the methodology can accurately predict the binding of the spike/ACE2 variant complexes. From this methodology, we predicted that the Omicron variant spike has a K d of ∼22.69 nM (which is very close to the experimental K d of 20.63 nM published during the review process of the current report) and that spike protein of the new “Stealth” Omicron variant (BA.2) will display a K d of ∼12.9 nM with the wild-type ACE2 protein. This methodology can be used with as-yet discovered variants, allowing for quick determinations regarding the variant’s infectivity versus either the wild-type virus or its variants.
【초록키워드】 ACE2, pandemic, variant, SARS-CoV-2 virus, omicron, variants, binding affinity, Spike protein, infections, Omicron variant, B.1.1.529, methodology, predict, binding, angiotensin, ACE2 protein, surface area, human Angiotensin-converting enzyme, wild-type virus, wild-type, variant spike, predicted, can be used, the spike protein, complexes, the binding affinity, the SARS-CoV-2 virus, 【제목키워드】 SARS-CoV-2, spike, Human, prediction, affinity, Generalized,