微生物硫基诺代谢的进展
Yiwei Chen1,2, Dazhi Liu2,3, Ruoxing Chu2
1College of Food Science and Technology, Nanjing Agricultural University, Nanjing, China.
Frontiers in microbiology
|February 12, 2026
概括
硫基诺 (SQ) 是一种关键的硫化合物,通过C-S或C-C键路径被肠道细菌降解. 这种微生物代谢会影响硫循环和人类健康.
科学领域:
- 生物化学和微生物学
- 环境科学与生物地球化学循环
- 人类肠道微生物组研究研究
背景情况:
- 硫基诺 (SQ) 是光合作用生物体中硫脂质的主要成分,每年全球生产约100亿.
- 微生物降解SQ是硫循环的组成部分,对人类健康,特别是肠道微生物组功能,影响越来越大.
- 了解SQ催化作用对于理解微生物在硫循环中的作用及其对宿主健康的影响至关重要.
研究的目的:
- 系统地审查已知的微生物代途径,用于硫基诺 (SQ) 降解.
- 阐明从SQ.中获得的硫酸中间体的降解过程中的机制.
- 简要讨论SQ降解在人类肠道环境中的影响.
主要方法:
- 对硫基诺 (SQ) 代谢的微生物途径的系统文献综述.
- 对CS键裂解路径 (硫-ASMO,硫-ASDO) 和C-C键裂解路径 (硫-EMP,硫-ED,硫-TAL,硫-TK) 的分析.
- 对酸硫酸盐 (SL) 和二基硫酸盐 (DHPS) 等硫酸盐中间体的降解机制的审查.
主要成果:
- 存在两个主要类型的SQ代谢途径:C-S键裂变产生葡萄糖和硫酸盐,和C-C键裂变产生短链硫酸盐.
- 通过像Bilophila wadsworthia这样的细菌降解中间体,可以产生硫化 (H2S),这是与炎症和结肠癌相关的有毒化合物.
- SQ 催化作用对全球硫循环有着显著的贡献,并影响人类肠道微生物组的组成和功能.
结论:
- 硫基诺的微生物降解涉及各种途径,影响硫的生物地球化学.
- SQ降解的代谢产物,特别是H2S,对人类肠道健康和疾病有重大影响.
- 对SQ催化物的进一步研究是有必要的,以充分理解其在微生物生态和人类健康中的作用.
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