Abstract��To introduce peptidoglycan recycling and the ��-lactams resistance mechanisms of bacteria, so that some help would be supplied to corresponding scientific workers and university teachers. By searching literatures, combined with our own studies, the bactericidal mechanisms of ��-lactams and the resistance mechanisms of bacteria to ��-lactams were summarized. The bactericidal activity of ��-lactams is resulted from the inhibition of cell wall biosynthesis through combination with penicillin binding proteins such as transpeptidase destruction of peptidoglycan balances between biosynthesis and hydrolysis. The drug resistance of bacteria is resulted from the induction of ��-lactamase, expression of out-pumping proteins, increase of outmembrane permeability, and modification of antibiotic target proteins. The proteins related to peptidoglycan recycling, such as transpeptidase and glycosyltransferase, would be potential targets for screening new ��-lactams. The proteins related to ��-lactams resistance, such as ��-lactamase, would be potential targets for screening adjuvant drugs of ��-lactams.
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2017, Vol. 52 
