Stabilizing Prefusion SARS-CoV-2 Spike by Destabilizing the Postfusion Conformation
Background/Objectives: As with many viral fusion proteins, the native conformation of SARS-CoV-2 Spike is metastable.Most COVID-19 vaccines utilize a stabilized Spike (Spike-2P) containing two proline substitutions, and subsequently, a further stabilized variant with four additional proline substitutions, Spike-6P, has been developed.In an alternat