相关实验视频
Updated: Jun 29, 2025

05:07
Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines
Published on: June 23, 2019
6.7K
解读Myxobacteria产生的5-甲基化pyrazinones的生物合成和生理功能
Le-Le Zhu1, Qingyu Yang1, De-Gao Wang1
1State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
ACS central science
|April 1, 2024
概括
菌根菌产生复杂的分子,如珊瑚. 这项研究揭示了coralinone.
科学领域:
- 微生物学 微生物学
- 自然产品 化学 化学
- 生物化学 生物化学
背景情况:
- 菌类菌群是复杂的二次代谢产物的丰富来源,具有多样化的生物活性.
- 科拉林是一种新型的5-甲基化皮拉津,从*Corallococcus exiguus* SDU70.0中分离出来.
研究的目的:
- 为了发现和表征coralinone,一个从myxobacteria的二次代谢物.
- 为了阐明coralinone的生物合成,功能和自我抵抗机制.
- 探索珊瑚生物合成的进化背景.
主要方法:
- 对*corA*基因的遗传和生物化学分析.
- 生物仿真对珊瑚的总合成.
- 生理学测试以确定coralinone对myxobacterial聚合的影响.
- 对*corA*相关的生物合成基因集群的家族遗传学分析.
- 实验验证 *corB* 基因作为蛋白酶的功能.
主要成果:
- 该NRPS/PKS基因 *corA* 调节珊瑚生物合成,而PKS域负责5甲基化.
- 科拉林通过增加细胞外基质分泌来增强myxobacterial细胞聚合;5-甲基化对此活动至关重要.
- 遗传学分析揭示了5-基化pyrazinone生物合成的不同演变.
- 邻近的基因*corB*编码了一种降解细胞外蛋白质的蛋白酶,抵消了coralinone的聚合诱导作用.
结论:
- 科拉林的5-甲基化对于其在myxobacterial聚合中的作用至关重要.
- 蛋白酶CORB提供了对珊瑚的影响的自我抵抗力.
- 这些发现提供了关于菌体化学生态的见解,以及菌体作为新型化合物的资源的潜力.
相关概念视频
Overview of Metabolism
30.1K
Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
30.1K
The Roles of Bacteria and Fungi in Plant Nutrition
35.3K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
35.3K
Fates of Pyruvate
8.4K
Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
8.4K
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
2.9K
The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...
2.9K
Five-Membered Heterocyclic Aromatic Compounds: Overview
3.9K
Heterocyclic aromatic compounds are cyclic compounds that are aromatic and have one or more heteroatoms—atoms other than carbon, in the ring. Depending upon the number of atoms present in the ring, they can be either five or six-membered. Examples of five-membered heterocyclic aromatic compounds include pyrrole, furan, thiophene, and imidazole. Pyrrole consists of one nitrogen atom having one lone pair of electrons. Furan and thiophene have one oxygen and one sulfur heteroatom,...
3.9K
Riboswitches
8.1K
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
8.1K

