在Halomonas sp.中,Dimethylsulfoniopropionate裂变和Dimethyl Sulfide生产的代谢调节 D4747 D47 D47 D47 D47 D47 D47 D47 D47 D47
Li-Yuan Zheng1,2,3, Wen-Xin Jiang1, Xiao-Meng Sun1
1Marine Biotechnology Research Center, State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 13, 2026
概括
研究人员在细菌中发现了一种双调节器系统 (AcuR和AcuZ),该系统控制二甲基硫 propionate (DMSP) 分解为二甲基硫化物 (DMS),影响海洋硫循环和气候.
科学领域:
- 海洋微生物生态学
- 生物地质化学循环 生物地质化学循环
- 分子生物学分子生物学
背景情况:
- 甲基硫烯酸 (DMSP) 是一种具有重要的生态功能的关键海洋有机硫化合物.
- 微生物分解DMSP产生二甲基硫化物 (DMS),影响硫循环,云形成和气候.
- 细菌DMSP代谢的调节机制在很大程度上是未知的.
研究的目的:
- 阐明控制细菌DMSP裂变和DMS产生的代谢调节机制.
- 调查转录调节器在控制Halomonas sp.中DMSP代谢中的作用. D47. D47. D47. D47. D47. D47. D47. D47. D47. D47. D47. D47. D47.
主要方法:
- 在模型细菌Halomonas sp.上进行了综合遗传和生化分析. D47. D47. D47. D47. D47. D47. D47. D47. D47. D47. D47. D47. D47.
- 生物信息学分析被用来评估已识别的监管机制的保存.
主要成果:
- 确定了一种复杂的调节机制,涉及两个转录调节器,AcuR和AcuZ.
- 这些调节器通过感知DMSP及其代谢物来协调DMSP的代谢.
- 调控系统微调基因表达,以平衡新陈代谢和排毒,保持细胞完整性.
结论:
- AcuR和AcuZ的监管系统为控制细菌DMSP代谢提供了至关重要的见解.
- 这种机制代表了细菌平衡代谢需求与细胞平衡的策略.
- 在其他高效的DMSP代谢细菌中,已识别的调节方案似乎得到了保留.
相关概念视频
Regulation of Metabolism
11.7K
Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
11.7K
Cleavage and Blastulation
50.4K
After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
50.4K
Regulated Protein Degradation
8.9K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.9K
Preparation and Reactions of Sulfides
5.8K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
5.8K
What is Metabolism?
132.6K
Overview
132.6K
Structure and Nomenclature of Thiols and Sulfides
5.8K
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...
5.8K


