微生物中的子:微生物中最少的最少
Moonil Son1,2,3, Sia Han4, Seyeon Lee4
1Department of Microbiology, Pusan National University, Busan, 46241, Republic of Korea. moonilson@pusan.ac.kr.
Journal of microbiology (Seoul, Korea)
|September 5, 2023
概括
微生物的子,与哺乳动物的不同,提供了对子疾病的见解. 在酵母和真菌等生物体中研究这些传染性蛋白质,扩大了我们对它们的生物学和潜在治疗策略的理解.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 蛋白质科学 蛋白质科学
背景情况:
- 子是传染性蛋白质,通常是粉样形状,主要在哺乳动物中引起致命疾病.
- 在Saccharomyces cerevisiae ([PSI+],[URE3]) 和Podospora anserina ([Het-s]) 等模型生物中发现的子扩大了子研究.
- 在 prokaryotes 中也发现了 prion 的类似物,例如 Clostridium botulinum.
研究的目的:
- 概述微生物子研究中的关键挑战和发现.
- 探索子在各种微生物中的生物和病理作用.
- 为了利用微生物的见解来理解和潜在地治疗人类/粉样性疾病.
主要方法:
- 审查关于微生物的现有文献.
- 在真核微生物 (酵母,真菌) 和 prokaryotes. prion 发现的分析.
- 检查子结构,复制和细胞相互作用.
主要成果:
- 在真核微生物中已经发现了十多个子,超出了最初的发现.
- 在 Podospora anserina 中的 [Het-s] 直接诱导细胞死亡.
- 在Clostridium botulinum中的一种子类比物 ([RHO-X-C+]) 影响全球转录.
结论:
- 微生物子为研究子生物学和疾病机制提供了有价值的模型.
- 对微生物的研究为开发针对人类和粉样蛋白疾病的策略提供了潜在的途径.
- 发现的微生物子世界对蛋白质误折叠障碍有着重要的教训.
相关概念视频
Prokaryotic Cells
35.1K
Prokaryotes are small unicellular organisms that include the domains — Archaea and Bacteria. Bacteria include many common microorganisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize...
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize...
35.1K
Genomic DNA in Prokaryotes
44.0K
The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Genomic Diversity in Bacteria
Although bacterial genomes are much...
44.0K
Translation in Prokaryotes
43
Prokaryote translation is a complex, highly coordinated process that converts genetic information from mRNA into functional proteins. It involves three stages: initiation, elongation, and termination, each facilitated by specific molecular components.Initiation of TranslationThe process begins with the assembly of the ribosomal subunits and initiation factors on the mRNA. In bacteria, the 30S ribosomal subunit recognizes the Shine-Dalgarno sequence in the mRNA, a conserved region upstream of...
43
Structure of Porins
3.0K
Mitochondria, chloroplasts, and gram-negative bacteria have transmembrane, beta-barrel proteins called porins to mediate the free diffusion of ions and metabolites across the membrane. Mitochondrial porin precursors contain conserved amino acid sequences called beta signals at their C-terminal. Beta signals have a motif of PoXGXXHyXHy (Po-Polar, X-Any amino acid, G-Glycine, Hy-LargeHydrophobic), which are crucial for precursor recognition to initiate precursor assembly. Beta-barrel...
3.0K
Bacterial Phylum Verrucomicrobiota
35
The phylum Verrucomicrobiota comprises at least four characterized orders, with most species classified within the order Verrucomicrobiotales. Members of this phylum are either aerobic or facultatively aerobic, with the ability to ferment sugars. A notable exception is the genus Methylacidiphilum, which consists of aerobic methanotrophs. Additionally, some Verrucomicrobiota establish symbiotic relationships with protists. These bacteria are widely distributed across various environments,...
35
Environmental Applications of Microorganisms
55
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
55


