@bridgietherease SGP is the surface glycoprotein. All coronaviruses & many other viruses have one – it’s the shell…
SGP is the surface glycoprotein. All coronaviruses & many other viruses have one – it's the shell in which the spikes sit.
With so many additions to the spike however, it's very fragile & carefully engineered. Thats why C works. It cannot mutate – mutations just dissolve.
— Adam Gaertner (@veryvirology) April 3, 2020