Quick update: after analyzing about 3,500 strains of coronaviruses, I found several that shared the same envelope proteins despite being different strains e.g.

Quick update: after analyzing about 3,500 strains of coronaviruses, I found several that shared the same envelope proteins despite being different strains e.g. https://www.ncbi.nlm.nih.gov/ipg/?term=ABP38309.1 https://www.ncbi.nlm.nih.gov/ipg/?term=ABP38309.1 My quick-and-dirty estimate from my data is that about 0.1% share the same envelope protein with other viruses, but this was just rushed amateur work, so don't take the number too seriously.