作为RNA机器的真核基因组
Paulo P Amaral1, Marcel E Dinger, Tim R Mercer
1Institute for Molecular Bioscience, University of Queensland, St. Lucia QLD 4072, Australia.
概括
细胞基因组产生大量的非蛋白质编码RNA (ncRNA),这些RNA调节基因表达和细胞功能. 最近的研究揭示了这些ncRNA在控制基因组动力学,细胞生物学和发育方面的多样性作用.
科学领域:
- 基因组学就是基因组学.
- 分子生物学分子生物学
- 发育生物学 发展生物学
背景情况:
- 细胞基因组被广泛转录,产生了大量的非蛋白质编码RNA (ncRNA).
- 越来越多的证据表明,许多这些ncRNA具有重要的调节作用.
- 了解ncRNA功能对于破译复杂的生物过程至关重要.
研究的目的:
- 要突出了解非蛋白质编码RNA功能的近期进展.
- 为了说明ncRNAs的多样性调节作用.
- 展示ncRNA参与基因组动力学,细胞生物学和发育编程.
主要方法:
- 关于ncRNA功能的最近研究的文献综述.
- 对实验数据的分析表明ncRNA介导调节.
- 综合不同生物背景的发现.
主要成果:
- 证明了真核生物基因组广泛转录为ncRNAs.
- 鉴定ncRNAs使用的多种调节机制.
- 关于ncRNA参与控制基因组稳定性,细胞过程和发育途径的例子.
结论:
- 非蛋白质编码RNA是真核生物中的关键调节剂.
- ncRNAs在基因组动力学,细胞生物学和发育中发挥着关键作用.
- 对ncRNA功能的进一步研究将揭示新的生物学见解.
相关概念视频
Ribosomal RNA Synthesis
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,...
Ribosomal RNA Synthesis
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,...
Structure of a Gene
A gene is the fundamental unit of heredity. Every individual has two copies of each gene, one inherited from each parent. Although most people contain the same genes, there is a small fraction that is slightly different amongst people. A gene with a small difference in its sequence of DNA bases forms different alleles, contributing to different phenotypes.
However, only 1% of the DNA is composed of genes that encode proteins; the rest, 99% is non-coding DNA. This non-coding DNA performs...
However, only 1% of the DNA is composed of genes that encode proteins; the rest, 99% is non-coding DNA. This non-coding DNA performs...
Ribosome Profiling
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 helps...
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 helps...
Eukaryotic RNA Polymerases
RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action.
All three eukaryotic RNAPs require specific transcription factors, of which the...
All three eukaryotic RNAPs require specific transcription factors, of which the...
Eukaryotic RNA Polymerases
RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action.
All three eukaryotic RNAPs require specific transcription factors, of which the...
All three eukaryotic RNAPs require specific transcription factors, of which the...


