Original is taken directly from the HIV Drugs Sketchy; I can rewatch for specifics tomorrow to see if this would cause any sort of confusion. Looks like a good change to me though!
maybe bold gp120 and gp41 in extra section to help recognize association
Reporting back 
The Sketchy just says the env encoded proteins (which they earlier say are gp120 and gp41) are sent to the ER for processing and does a bit of hand-waving on specifics. Only thing I’d change is to get rid of the ambiguity of singular/plural after cloze; just make it clear we’re asking for one thing
Think this shouldn’t cause much confusion and if anything provide us with more context to base our answer to 1672 on than the previous version (which is factually incorrect)
Edit: also rewatched HIV micro sketch to make sure and they directly mention gp160 being cleaved to 120 + 41 in that one
Will push by tonight if there’s no objection