Structural evidence for the covalent modification of FabH by 4,5-dichloro-1,2-dithiol-3-one (HR45).
Structural evidence for the covalent modification of FabH by 4,5-dichloro-1,2-dithiol-3-one (HR45).
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DOI:
10.1039/c7ob01396e
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发表时间:
2017-08-02
影响因子:
3.2
通讯作者:
Campopiano DJ
中科院分区:
文献类型:
--
作者:
Ekström AG;Kelly V;Marles-Wright J;Cockroft SL;Campopiano DJ
Mass spectrometry and modelling shows the antimicrobial inhibitor 4,5-dichloro-1,2-dithiol-3-one (HR45) acts by forming a covalent adduct with the target β-ketoacyl-ACP synthase III (FabH). The 5-chloro substituent directs attack of the essential active site thiol (C112) via a Michael type addition elimination reaction mechanism. We use mass spectrometry analysis and molecular modelling to show the established antimicrobial inhibitor 4,5-dichloro-1,2-dithiol-3-one (HR45) acts by forming a covalent adduct with the target β-ketoacyl-ACP synthase III (FabH). The 5-chloro substituent directs attack of the essential active site thiol (C112) via a Michael-type addition elimination reaction mechanism.
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