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  • Title: Degradation of penicillin-binding protein 2' in methicillin-resistant Staphylococcus aureus.
    Author: Sumita Y, Fukasawa M, Mitsuhashi S, Inoue M.
    Journal: Chemotherapy; 1995; 41(3):172-7. PubMed ID: 7656662.
    Abstract:
    We detected a novel protein with [14C]benzylpenicillin (PCG)-binding capacity and a molecular mass of about 60 kD in methicillin-resistant Staphylococcus aureus using a high concentration of [14C]PCG and extending the reaction time. However, the fluorogram showed that the band density of penicillin-binding protein 2' (PBP2') decreased gradually with incubation time. The appearance of the 60-kD protein and the reduction of the band density of PBP2' were stoichiometrically linked, and the binding profiles of beta-lactams for PBP2' and the 60-kD protein corresponded. These results suggested that the 60-kD protein is a degradation product of PBP2'.
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