This document discusses different classes of antibiotics that target various mechanisms in Mycobacterium tuberculosis. It mentions isoniazid as an inhibitor of mycolic acid synthesis, sulfonamides and trimethoprim as inhibitors of folic acid synthesis, and penicillin binding proteins as targets of beta-lactam antibiotics. It also describes how beta-lactamase inhibitors work by binding to and inactivating beta-lactamase enzymes produced by bacteria, which enhances the activity of beta-lactam antibiotics. The structure of the beta-lactamase inhibitor sulbactam is also briefly mentioned.