相关实验视频
Updated: Jun 29, 2025

07:02
An Assay for Quantifying Protein-RNA Binding in Bacteria
Published on: June 12, 2019
6.6K
在细菌-菌体相互作用中的基于RNA的调节.
Marion Saunier1, Louis-Charles Fortier2, Olga Soutourina3
1Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France; Department of Microbiology and Infectious Diseases, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
Anaerobe
|April 7, 2024
概括
RNAs在细菌对菌体的防御中起着至关重要的作用,并调节菌体与细菌的相互作用. 本综述强调了最近的进展,重点关注Clostridioides difficile和基于RNA的防御系统.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 细菌与菌体 (菌体) 的相互作用驱动细菌基因组进化和菌体多样性.
- RNAs是细菌抗菌体防御系统的组成部分,如CRISPR-Cas,毒素-抗毒素和流产性感染.
- 新兴的防御系统 (逆子,CBASS) 和移动遗传元素突出显示了菌-细菌网络中的动态相互作用.
研究的目的:
- 审查了解RNA在细菌-菌体相互作用中的多方面的作用方面的最新进展.
- 强调RNA组件在细菌防御和调控网络中的重要性.
- 专注于密闭类物种的特定环境,包括致病原体Clostridioides difficile.
主要方法:
- 最近科学出版物的文献综述.
- 在抗菌素防御中对RNA功能的数据的合成.
- 在菌体-细菌交叉交谈中对RNAs调控作用的分析.
主要成果:
- RNA是各种细菌抗菌体策略的核心,包括既有和新系统.
- RNA分子可以具有双重调节和防御功能,正如CRISPRRNAs所示.
- 防御系统和移动遗传元素之间的相互作用是研究的一个关键领域.
结论:
- RNAs是细菌-菌体相互作用的关键媒介,影响细菌进化和菌体多样性.
- 了解基于RNA的机制对于对抗像Clostridioides difficile.这样的细菌病原体至关重要.
- 对RNA作用的进一步研究为针对细菌感染的新型治疗策略提供了潜力.
相关概念视频
Types of RNA
63.6K
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
63.6K
CRISPR and crRNAs
17.0K
Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
17.0K
Bacterial RNA Polymerase
29.5K
Unlike eukaryotes, bacteria use a single RNA Polymerase (RNAP) to transcribe all genes. The different subunits of bacterial RNAPhave distinct functions. The multisubunit structure of the bacterial RNAP helps the enzyme to maintain catalytic function, facilitate assembly, interact with DNA and RNA, and self-regulate its activity.
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
29.5K
Prokaryotic Transcriptional Activators and Repressors
21.0K
The organization of prokaryotic genes in their genome is notably different from that of eukaryotes. Prokaryotic genes are organized, such that the genes for proteins involved in the same biochemical process or function are located together in groups. This group of genes, along with their regulatory elements, are collectively known as an operon. The functional genes in an operon are transcribed together to give a single strand of mRNA known as polycistronic mRNA.
Transcription of prokaryotic...
Transcription of prokaryotic...
21.0K
Lytic Cycle of Bacteriophages
70.7K
Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...
70.7K
Lysogenic Cycle of Bacteriophages
62.1K
In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
62.1K

