相关实验视频
Updated: Jul 21, 2026

11:09
Chromatin Isolation by RNA Purification (ChIRP)
Published on: March 25, 2012
一个不断扩大的非编码RNA的宇宙
1Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA. storz@helix.nih.gov
概括
非编码RNAs (ncRNAs) 是参与许多细胞过程的重要分子. 了解它们的丰富性,识别和功能,在分子生物学中提出了关键挑战.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 在RNA生物学,RNA生物学.
背景情况:
- 非编码RNA (ncRNAs) 在各种细胞机制中起着至关重要的作用,包括基因调节和蛋白质处理.
- 新兴研究强调了ncRNAs的大量和重要性,超过了以前的估计.
- ncRNAs的复杂性需要进一步研究它们的基因组编码和功能角色.
研究的目的:
- 为了解决有关基因组编码的ncRNA数量的基本问题.
- 探索识别ncRNA基因的方法,特别是考虑到它们缺乏蛋白质编码序列.
- 阐明ncRNAs在生物系统中的综合功能.
主要方法:
- 基因组分析以确定ncRNAs的目录.
- 对ncRNA基因识别的生物信息方法.
- 功能性研究以表征ncRNA活动.
主要成果:
- 在基因组内编码的大量ncRNAs的识别.
- 开发区分ncRNA基因与其他基因组元素的策略.
- 在细胞过程中特定的ncRNA功能的初始表征.
结论:
- ncRNAs代表了基因组的庞大和功能重要组成部分.
- 有效的识别策略对于对全谱ncRNAs进行分类至关重要.
- 进一步的研究是必不可少的,以完全解开ncRNAs的多样性功能.
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,...
lncRNA - Long Non-coding RNAs
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA (lncRNA)...
RNA-seq
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
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...
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,...
lncRNA - Long Non-coding RNAs
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA (lncRNA)...

