类似于YeeE的细菌SoxT蛋白质调解硫的进口,用于氧化和信号传导
Jingjing Li1, Fabienne Göbel1,2, Hsun Yun Hsu1
1Institut für Mikrobiologie & Biotechnologie, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany.
Communications biology
|November 21, 2024
概括
两个新的硫酸盐转运体SoxT1A和SoxT1B对细菌的硫代谢和调节至关重要. SoxT1A进口硫,而SoxT1B则信号外部硫的可用性来控制基因转录.
科学领域:
- 微生物学 微生物学
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 硫氧化 prokaryotes 使用外细胞质和细胞质反应来氧化硫化合物.
- 选择性硫氧化剂根据硫的可用性动态调节基因转录.
- 监管机构对硫进口和外部硫探测的机制尚不清楚.
研究的目的:
- 确定和描述SoxT1A和SoxT1B在硫代谢和调节中的作用.
- 为了阐明这些载体在Alphaproteobacterium Hyphomicrobium denitrificans中的功能.
主要方法:
- 在Hyphomicrobium denitrificans中对SoxT1A和SoxT1B突变的遗传分析.
- 评估硫氧化表型和基因转录水平.
- 研究了SoxT1B与转录抑制剂SoxR.R.之间的相互作用.
主要成果:
- SoxT1A对于将硫输入细胞质中进行氧化至关重要,尽管基因转录高,但SoxT1A突变体中硫氧化阴性表型证明了这一点.
- SoxT1B作为转录抑制器SoxR的信号传感器,在响应外部硫的过程中调节转录.
- 由于转录率低,SoxT1B突变体表现出氧化硫阴性表型,除非SoxR缺席.
结论:
- SoxT1A和SoxT1B对于氧化硫代谢及其在Hyphomicrobium denitrificans中的调控控制至关重要.
- 这些转运体在将硫的可用性与细胞代谢和转录反应联系起来方面发挥着独特和必不可少的作用.
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