A 34-year-old man comes to the physician for a 2-day history of blistering around the mouth and on the cheeks. Past medical history is unremarkable apart from having been prescribed an antibiotic one week ago for a chest infection. The pharmacologic agent responsible for this patient’s condition most likely inhibits which of the following?
D-ala D-ala
Dihydrofolate reductase
DNA gyrase
30S
50S
