Biologists have long known that the production machinery that translates the genetic code into proteins is sloppy. So much so, in fact, that on average about one in five proteins in yeast is mistranslated, the equivalent of translating the Spanish word "Adios" as "Goofbye."
And
[E]very yeast cell churns out about 1.26 million individual PMA1 molecules, making it the second-most abundant cellular protein.
Which, of course, leaves me wondering what the *first*-most abundant cellular protein might be, and ready to smack the writer of the article for keeping us hanging like that.