The hydrophobic trap-the Achilles heel of RND efflux pumps.

The hydrophobic trap-the Achilles heel of RND efflux pumps.
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DOI:
10.1016/j.resmic.2017.11.001
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发表时间:
2018-09
影响因子:
2.6
通讯作者:
Opperman TJ
Opperman TJ
中科院分区:
生物学3区
文献类型:
--
作者:
Aron Z;Opperman TJ

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耐药-结节分裂(RND)超家族外排泵通过从细胞中挤出不同种类的抗生素,在革兰氏阴性病原体的多药耐药(MDR)中发挥重要作用。人们对开发RND泵的外排泵抑制剂(EPIs)作为辅助治疗非常感兴趣。EPI发现的主要挑战是目标的高度疏水性,多特异性底物结合位点。最近的研究发现,疏水陷阱是RND外排泵的“阿喀琉斯之踵”,它是底物结合部位一个狭窄的苯丙氨酸衬里沟槽。在这篇综述中,我们将研究作为EPI靶点的疏水陷阱和结合在那里的两个化学上不同的EPI系列。
Resistance-nodulation-division (RND) superfamily efflux pumps play a major role in multidrug resistance (MDR) of Gram-negative pathogens by extruding diverse classes of antibiotics from the cell. There has been considerable interest in developing efflux pump inhibitors (EPIs) of RND pumps as adjunctive therapies. The primary challenge in EPI discovery has been the highly hydrophobic, poly-specific substrate binding site of the target. Recent findings have identified the hydrophobic trap, a narrow phenylalanine- lined groove in the substrate-binding site, as the “Achilles heel” of the RND efflux pumps. In this review, we will examine the hydrophobic trap as an EPI target and two chemically distinct series of EPIs that bind there.
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