一个塑料生物合成途径,用于生产结构上不同的微生物防晒
Sıla Arsın1, Endrews Delbaje2, Jouni Jokela1
1University of Helsinki, Department of Microbiology, Faculty of Agriculture and Forestry, 00014 Helsinki, Finland.
ACS chemical biology
|August 21, 2023
概括
研究人员在杆菌Nostoc sp.中发现了两种独特的类氨基酸 (MAA). 在UHCC 0926.6. 这些天然防晒通过分支途径产生,突出显示了蓝藻细菌中MAA生物合成的遗传多样性.
科学领域:
- 微生物学 微生物学
- 生物化学 生化学
- 基因组学就是基因组学.
背景情况:
- 类氨基酸 (MAA) 是天然化合物,以其强大的紫外线吸收特性而闻名,作为有效的防晒剂.
- MAA 是由各种有机体产生的二次代谢产物,包括蓝藻细菌,具有不同的化学结构.
研究的目的:
- 为了识别和描述来自体共生物Nostoc sp.的新型MAA. 在UHCC 0926.6.
- 阐明这些MAA的遗传基础和生物合成途径.
- 为了研究MAA生物合成在蓝藻细菌的进化动态.
主要方法:
- 高分辨率液体染色学质谱学 (HR-LCMS) 用于MAA识别.
- 核磁共振 (NMR) 光谱用于结构阐明.
- 全基因组测序和生物信息分析以确定生物合成基因集群.
主要成果:
- 发现和结构识别两个不同的MAA:aplysiapalythine E和tricore B.
- 确定位于三个单独的基因组区域的MAA生物合成基因,表明有分支的生物合成途径.
- 在12%的公共蓝藻细菌基因组中检测出不相连的MAA生物合成基因集群.
结论:
- 这种蓝藻细菌Nostoc sp. UHCC 0926通过分支生物合成途径产生结构多样化的MAA.
- 不相连的MAA基因集群在蓝藻细菌中普遍存在,这表明进化的可塑性.
- MAA生物合成途径的多样性有助于这些微生物防晒的化学变异性.
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