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Multiscale Simulations of Clavulanate Inhibition Identify the Reactive Complex in Class A beta-Lactamases and Predict the Efficiency of Inhibition

机译:Clavulanate抑制的多尺度模拟鉴定β-内酰胺酶的反应性络合物,并预测抑制效率

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摘要

Clavulanate is used as an effective drug in combination with beta-lactam antibiotics to treat infections of some antibiotic resistant bacteria. Here, we perform combined quantum mechanics/molecular mechanics simulations of several covalent complexes of clavulanate with class A beta-lactamases KPC-2 and TEM-1. Simulations of the deacylation reactions identify the decarboxylated transenamine complex as being responsible for inhibition. Further, the obtained free energy barriers discriminate clinically relevant inhibition (TEM-l) from less effective inhibition (KPC-2).
机译:克拉维酸盐用作β-内酰胺抗生素组合的有效药物,以治疗一些抗生素抗性细菌的感染。 在此,我们对克拉维酸盐的几种共价复合物进行综合量子力学/分子力学模拟,β-内酰胺酶KPC-2和TEM-1。 脱酰化反应的模拟鉴定脱羧的二甲胺络合物作为负责抑制。 此外,所获得的自由能屏障在临床相关的抑制(TEM-1)免于较低的效率抑制(KPC-2)。

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