Bad News Wrapped in Protein: Inside the Coronavirus Genome

There are many things fascinating here. But two struck me:

Viral Proofreader · NSP14

As NSP12 duplicates the coronavirus genome, it sometimes adds a wrong letter to the new copy. NSP14 cuts out these errors, so that the correct letter can be added instead.

End of the Line

The coronavirus genome ends with a snippet of RNA that stops the cell’s protein-making machinery. It then trails away as a repeating sequence of aaaaaaaaaaaaa

So this thing has error detection and handling, and an EOF?