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首页> 外文期刊>Biochemistry >Regulation of the Expression of the β-Lactam Antibiotic-Resistance Determinants in Methicillin-Resistant Staphylococcus aureus (MRSA)
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Regulation of the Expression of the β-Lactam Antibiotic-Resistance Determinants in Methicillin-Resistant Staphylococcus aureus (MRSA)

机译:耐甲氧西林金黄色葡萄球菌(MRSA)中β-内酰胺抗生素抗性决定簇表达的调控

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摘要

β-Lactam antibiotics have faced obsolescence with the emergence of methicillin-resistant Staphylococcus aureus (MRSA). A complex set of events ensues upon exposure of MRSA to these antibiotics, which culminates in proteolysis of BlaI or MecI, two gene repressors, and results in the induction of resistance. We report studies on the mechanism of binding of these gene repressors to the operator regions by fluorescence anisotropy. Within the range of in vivo concentrations for BlaI and MecI, these proteins interact with their regulatory elements in a reversible manner, as both a monomer and a dimer.
机译:随着耐甲氧西林的金黄色葡萄球菌(MRSA)的出现,β-内酰胺抗生素已经过时。当MRSA暴露于这些抗生素后,会发生一系列复杂的事件,最终导致两种基因阻遏物BlaI或MecI的蛋白水解,并导致耐药性的诱导。我们报告了这些基因阻遏物结合到荧光各向异性的操作员区域的机制的研究。在BlaI和MecI的体内浓度范围内,这些蛋白质作为单体和二聚体以可逆的方式与它们的调节元件相互作用。

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