通过Streptomyces sp.中的定数感应自诱导体激活DBP降解和相关信号传导路径. 在 SH5 SH5 中,
Ganxing Liu1, Hao An1, Lei Tang1
1Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China.
Journal of hazardous materials
|January 24, 2024
概括
定数感应信号显著增强了由Streptomyces sp.引起的迪布甲酸 (DBP) 降解. 这就是SH5.5. 发现了一种涉及A-like,Orf3412和Orf2879的新型调节级联,加速微生物DBP矿化.
科学领域:
- 微生物学 微生物学
- 环境科学 环境科学
- 生物化学 生化学
背景情况:
- 微生物降解二甲 (DBP) 对于环境修复至关重要.
- 细胞外因素会影响DBP矿化,但定数感应 (QS) 信号的作用在很大程度上仍未被探索.
研究的目的:
- 研究QS信号对Streptomyces sp.中的DBP降解效率的影响. 这就是SH5.5.
- 阐明QS介导的DBP降解背后的分子机制.
主要方法:
- 高性能液体色谱-飞行质谱/质谱 (HPLC-TOF-MS/MS) 的时间用于中间识别.
- 多组体分析以确定关键酶和调节途径.
- 电泳运动转移试验 (EMSA) 和基因过度表达以验证调控相互作用.
- 分子对接以预测连接体-受体复合体的稳定性.
主要成果:
- 细胞外 QS 信号 A-like 显著增强了 DBP 降解.
- 鉴定出单聚甲酸,甲基甲酸和β-基酸是降解中间体.
- 多组学揭示了水解酶,转移酶和脱碳酶的上调.
- 一个层次性的调节级联:A-like/Orf3712复合体形成,增强的Orf2708表达,以及下游激活酶Orf2879.
结论:
- 这项研究提供了 GBLs 类型 QS 信号促进的细菌中 DBP 降解的第一个证据.
- 阐明的信号传导途径突出显示了增强微生物DBP矿化的一种普遍应用潜力.
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