一个更新的 Caenorhabditis elegans RNA 结合蛋白质和它们的调节汇编
Felicia Peng1, John Isaac Murray1
1Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States.
G3 (Bethesda, Md.)
|July 14, 2025
概括
这项研究更新了C. elegans中RNA结合蛋白的目录,揭示了它们的特定表达模式和在发育中的保留作用. 了解这些RNA结合蛋白对于破译基因调节网络至关重要.
科学领域:
- 分子生物学分子生物学
- 发展生物学 发展生物学
- 基因组学就是基因组学.
背景情况:
- 基因调控涉及转录和后转录机制.
- RNA结合蛋白 (RBPs) 的表征落后于转录因子,尽管它们在RNA拼接,局部化,翻译和周转方面发挥了作用.
- 在发育过程中对基因调节的全面理解需要绘制RBP网络.
研究的目的:
- 更新wRBP1.0对Caenorhabditis elegansRNA结合蛋白的汇编. 为了更新wRBP1.0对Caenorhabditis elegansRNA结合蛋白的汇编.
- 编目这些RBP的表达模式和发育现象型.
- 为研究C. elegans.中的RBP监管网络提供资源.
主要方法:
- 更新了wRBP1.0汇编,将928个假设的RNA结合蛋白纳入WS290.0.
- 使用细胞类型和发育阶段特定数据编目RBP基因表达.
- 使用现有的功能性基因组资源分析了发育现象型.
主要成果:
- 许多RNA结合蛋白基因在胚胎中表现出细胞类型和发育阶段特定的表达.
- RNA结合蛋白在各个物种中高度保留.
- 丢失RNA结合蛋白可以导致各种发育缺陷.
结论:
- RNA结合蛋白在发育过程中在建立独特的基因表达模式方面发挥着关键作用.
- 更新后的汇编为未来对RBP网络的功能调查提供了宝贵的资源.
- 对RBP调控网络的进一步研究对于完全了解基因调控至关重要.
相关概念视频
Translational Regulation
104
Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...
104
Transcriptional Regulation: Riboswitches
121
Riboswitches are RNA elements that regulate gene expression by altering their secondary structures in response to specific effector molecules. These elements, located in the leader regions of certain mRNAs, act as transcriptional regulators by toggling between alternative conformations to control downstream gene expression. Riboswitch-mediated regulation is a precise mechanism for modulating biosynthetic pathways, as exemplified by the riboflavin biosynthesis pathway in Bacillus...
121
Types of RNA
65.1K
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...
65.1K
Riboswitches
8.6K
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...
8.6K
Regulation of Expression at Multiple Steps
1.0K
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
1.0K
Regulation of Expression Occurs at Multiple Steps
23.5K
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
23.5K


