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揭示了草甘在大肠杆菌中的新型蛋白相互作用伙伴

Alix Sarah Aldehoff¹, Dominique Türkowsky¹, Patrick Lohmann¹

¹Department of Molecular Toxicology, Helmholtz-Centre for Environmental Research GmbH (UFZ), Leipzig, Germany.

Environment international

|December 29, 2024

概括

草甘是一种广泛使用的除草剂,它在像大肠杆菌这样的细菌中影响的不仅仅是其向酶. 这项研究揭示了草甘破坏了氨基酸合成,并与其他细菌蛋白相互作用,影响微生物系统.

科学领域:

微生物学微生物学
生物化学生化学
环境科学环境科学

背景情况:

草甘是一种广泛使用的除草剂,已知通过抑制EPSPS对石基胺途径产生影响.
它对微生物蛋白质组和非标生物的更广泛影响尚未完全理解.
大肠杆菌 (E. coli) 具有对草甘敏感的EPSPS,使其成为研究除草剂效应的相关模型.

研究的目的:

为了确定草甘在E. coli中的新型蛋白质结合伙伴.
为了研究草甘在蛋白质层面的更广泛的作用模式.
了解草甘的代谢干扰超出其主要目标.

主要方法:

使用定量蛋白质组学来分析蛋白质丰度变化.
热蛋白质组分析 (TPP) 用于确定直接的蛋白质-甘酸盐相互作用.
在暴露于草甘后分析了大肠杆菌蛋白质.

主要成果:

暴露于草甘改变了氨基酸合成途径,并增加了什基马酸途径蛋白质的丰度.
细胞外 рибофлавин水平增加,而细胞内 рибофлавин水平保持稳定.
TPP确定了草甘与AroH和ProA等蛋白质之间的相互作用,这表明EPSPS以外的更广泛的影响.

结论:

草甘诱导大肠杆菌的代谢干扰,影响多个途径.
这种除草剂与其主要目标,即EPSPS以外的细菌蛋白相互作用.
这些发现为草甘对微生物系统的更广泛影响提供了新的见解.

关键词:

急性和慢性暴露的情况.埃舍里希亚大肠杆菌 (Escherichia coli) 是一个大肠杆菌.草甘是一种天然的草甘.蛋白质相互作用的合作伙伴热蛋白质组简介的热性简介

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