Mycobacterial Epoxide Hydrolase EphD Is Inhibited by Urea and Thiourea Derivatives.

Mycobacterial Epoxide Hydrolase EphD Is Inhibited by Urea and Thiourea Derivatives.
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分枝杆菌环氧化物水解酶ePhD被尿素和硫脲衍生物抑制。

DOI:
10.3390/ijms22062884
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发表时间:
2021-03-12
影响因子:
5.6
通讯作者:
Korduláková J
Korduláková J
中科院分区:
生物学2区
文献类型:
--
作者:
Madacki J;Kopál M;Jackson M;Korduláková J

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人类细胞内病原体结核分枝杆菌的基因组编码异常大量的环氧化物水解酶,这些酶被认为参与忍受宿主巨噬细胞的恶劣环境所需的脂质代谢和解毒反应。因此,这些酶代表了诸如尿素衍生物等化合物的合适靶标,尿素衍生物是已知的可溶性环氧化物水解酶抑制剂。在这项工作中,我们使用脂肪酸底物在体外研究了硫脲药物 isoxyl 对结核分枝杆菌的六种环氧化物水解酶的影响。我们发现 EphD 是一种受异氧基抑制的蛋白质,它是一种参与分枝杆菌酸代谢的酶,分枝杆菌酸是分枝杆菌细胞壁的关键成分。通过分析分枝菌酸谱,我们证明了异氧基和其他两种基于尿素的抑制剂(硫醋酮和 AU1235)对分枝杆菌细胞内 EphD 环氧化物水解酶活性的抑制作用。
The genome of the human intracellular pathogen Mycobacterium tuberculosis encodes an unusually large number of epoxide hydrolases, which are thought to be involved in lipid metabolism and detoxification reactions needed to endure the hostile environment of host macrophages. These enzymes therefore represent suitable targets for compounds such as urea derivatives, which are known inhibitors of soluble epoxide hydrolases. In this work, we studied in vitro the effect of the thiourea drug isoxyl on six epoxide hydrolases of M. tuberculosis using a fatty acid substrate. We show that one of the proteins inhibited by isoxyl is EphD, an enzyme involved in the metabolism of mycolic acids, key components of the mycobacterial cell wall. By analyzing mycolic acid profiles, we demonstrate the inhibition of EphD epoxide hydrolase activity by isoxyl and two other urea-based inhibitors, thiacetazone and AU1235, inside the mycobacterial cell.
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