NH2 sulfanilamide OH No folic acid PABA bacterial die Bacterial enzyme Fig 14.7 sulfa drugs are metabolized to sulfanilamide, which binds to the bacterial enzymes and keeps them from doing their jobC O N OH H H S O NH2 O N H H No folic acid bacterial die PABA sulfanilamide Bacterial enzyme Fig 14.7 sulfa drugs are metabolized to sulfanilamide, which binds to the bacterial enzymes and keeps them from doing their job