大规模的RNA编辑在亚胞性线粒体中
Akinori Yabuki1,2,3, Chihaya Fujii1,2, Euki Yazaki4
1Japan Agency for Marine-Earth Science and Technology.
Microbes and environments
|March 16, 2025
概括
帕拉迪尼达的原生体保留了功能性线粒体和器官基因组,与其他胞体不同. 它们的线粒体基因组经历了广泛的RNA编辑,可能恢复蛋白质功能.
科学领域:
- 亲生组织学 亲生组织学 Protistology
- 寄生虫学的寄生虫学
- 线粒体生物学 线粒体生物学
- 编辑RNA编辑RNA编辑
背景情况:
- 无脊椎动物寄生虫 (Ascetosporeans) 是无脊椎动物寄生虫,已知其线粒体功能减弱,在某些类别中缺少有机细胞基因组.
- 由于缺乏基因组数据,Paradinida的线粒体性质,另一个亚胞体序列,仍然没有表征.
研究的目的:
- 为了研究Paradinida的线粒体特征和器官基因组状态.
- 探索在Paradinida线粒体中RNA编辑的存在和性质.
主要方法:
- 建立了两个Paradinida文化.
- 进行DNA和RNA测序分析.
- 对RNA编辑酶的生物信息识别 (PPR-DYW,类似ADAR).
- 免疫光显微镜用于ADAR类定位.
主要成果:
- 帕拉迪尼达具有非减小的线粒体与保留的细胞器基因组.
- 大规模的A-to-I和C-to-URNA编辑发生在Paradinida线粒体基因组中.
- 蛋白质编码基因中的非同义编辑表明它具有修复功能.
- 鉴定PPR-DYW和ADAR类同类物,ADAR类可能局部化到线粒体.
结论:
- 帕拉迪尼达表现出独特的线粒体和基因组特征与其他ascetosporeans相比.
- 在Paradinida线粒体中进行广泛的RNA编辑在维护遗传信息方面起着至关重要的作用.
- 这些发现扩大了对寄生虫原生体中器官RNA编辑多样性和复杂性的理解.
相关概念视频
Types of RNA
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...
RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
Types of RNA
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...
RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
RNA Editing
RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
Types of 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 regulating 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 Performs Diverse...
RNA Performs Diverse...


