A novel pleuromutilin antibacterial compound, its binding mode and selectivity mechanism.

A novel pleuromutilin antibacterial compound, its binding mode and selectivity mechanism.
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一种新型的胸膜素抗菌化合物,其结合模式和选择性机制。

DOI:
10.1038/srep39004
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发表时间:
2016-12-13
期刊:
影响因子:
4.6
通讯作者:
Yonath A
Yonath A
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Eyal Z;Matzov D;Krupkin M;Paukner S;Riedl R;Rozenberg H;Zimmerman E;Bashan A;Yonath A

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越来越多的具有抗生素耐药性的致病菌的出现是一个全球性的威胁。因此,临床上可获得的对多重耐药病原体有效的强效抗生素正变得极其稀少。核糖体是抗生素的主要靶点,因此是新药开发的目标。Lefamulin是一种半合成的胸膜残素化合物,对多重耐药病原体具有高度活性,是一种很有前景的抗生素,目前正在进行治疗成人社区获得性细菌性肺炎的III期试验。金黄色葡萄球菌大核糖体亚基与lefamulin复合物的晶体结构揭示了其蛋白质合成抑制机制及其效力的基本原理。此外,通过对细菌和真核生物胸膜残蛋白结合袋周围核糖体结构的分析,揭示了该药物选择性的关键。
The increasing appearance of pathogenic bacteria with antibiotic resistance is a global threat. Consequently, clinically available potent antibiotics that are active against multidrug resistant pathogens are becoming exceedingly scarce. Ribosomes are a main target for antibiotics, and hence are an objective for novel drug development. Lefamulin, a semi-synthetic pleuromutilin compound highly active against multi-resistant pathogens, is a promising antibiotic currently in phase III trials for the treatment of community-acquired bacterial pneumonia in adults. The crystal structure of the Staphylococcus aureus large ribosomal subunit in complex with lefamulin reveals its protein synthesis inhibition mechanism and the rationale for its potency. In addition, analysis of the bacterial and eukaryotes ribosome structures around the pleuromutilin binding pocket has elucidated the key for the drug’s selectivity.
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