核糖体蛋白质网络在核糖体动态中的作用
Youri Timsit1,2, Grégoire Sergeant-Perthuis3, Daniel Bennequin4
1Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM110, 163 avenue de Luminy 13288 Marseille, France.
Nucleic acids research
|January 9, 2025
概括
核糖体蛋白质网络通过静电相互作用同步细菌核糖体的运动. 这个机制,类似于一个类似的机制.
科学领域:
- 分子生物学分子生物学
- 生物物理学的生物物理.
背景情况:
- 核糖体对于蛋白质合成至关重要,集成信号并执行复杂的动态.
- 了解核糖体内的信息传输和运动同步仍然是一个挑战.
研究的目的:
- 为了研究核糖体蛋白质网络与核糖体动态之间的关系.
- 阐明细菌核糖体中信息传输和运动协调的机制.
主要方法:
- 分析细菌核糖体中核糖体蛋白网络与主要运动中心之间的相互作用.
- 对围绕核糖体蛋白质的核糖体RNA流动性的研究.
- 检查充电残留物 (Glu 和 Asp) 在RNA-蛋白质静电相互作用中的作用.
主要成果:
- 细菌核糖体中的主要运动中心与核糖体蛋白质特别相互作用.
- 核糖体RNA在单个核糖体蛋白质周围表现出高度的移动性.
- 定期的静电变化涉及负电荷的残留物驱动RNA-蛋白距离接近周期,控制核糖体转位.
- 带电残留物调节静电排斥,协调核糖体动力学.
结论:
- 核糖体蛋白质网络通过"静电多米诺效应"同步核糖体动力学.
- 这种机制将质的概念扩展到超分子组合中的运动调节.
- 这些发现为蛋白质合成期间的核糖体协调运动提供了新的见解.
相关概念视频
Ribosomal RNA Synthesis
13.1K
Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
13.1K
Ribosomes
7.3K
Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that synthesize large quantities of protein—such as secretory cells in the human pancreas—can contain millions of ribosomes.
Ribosome Structure and Assembly
Ribosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome...
Ribosome Structure and Assembly
Ribosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome...
7.3K
Ribosome Profiling
3.5K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.5K
Directing Proteins to the Rough Endoplasmic Reticulum
7.1K
The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
7.1K
Types of RNA
63.2K
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...
63.2K
Protein Networks
3.9K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
3.9K


