関連する実験動画
Updated: Feb 6, 2026

08:44
Assembly and Characterization of Polyelectrolyte Complex Micelles
Published on: March 2, 2020
11.6K
NORAD lncRNAは,ゲノム安定性にとって重要なトポイソメラーゼ複合体を組み立てる
Mathias Munschauer1, Celina T Nguyen2, Klara Sirokman2
1Broad Institute of MIT and Harvard, Cambridge, MA, USA. mathias@broadinstitute.org.
Nature
|August 29, 2018
まとめ
長い非コーディングRNAのNORADは,RBMXを結合して,TOP1とPRPF19-CDC5Lを含むNARC1複合体を形成することで,ゲノム安定性を維持する. この相互作用はDNA修復と染色体不安定性の予防に不可欠です
科学分野:
- 分子生物学
- 遺伝学
- RNA 生物学
背景:
- 何千もの長い非コーディングRNA (lncRNA) が存在するが,その機能はほとんど知られていない.
- NORAD (DNA損傷によって活性化される非コーディングRNA) はゲノム安定性に関与しているが,そのメカニズムは不明である.
研究 の 目的:
- NORADと相互作用する タンパク質を特定するために
- ゲノムの安定性を維持するNORADの分子メカニズムを解明する.
主な方法:
- 定量質スペクトロメトリーと結合した RNA 反意味浄化
- 細胞の枯渇と救出実験
主要な成果:
- NORADはRBMXを含むDNA複製および修復タンパク質と相互作用する.
- NORADは,TOP1,ALYREF,およびPRPF19- CDC5L複合体を含むNARC1複合体 (NORAD活性化リボ核タンパク質複合体1) の組み立てに不可欠である.
- NORADまたはRBMXの枯渇は染色体分離の欠陥と細胞サイクル進行の変化につながる.
結論:
- NORAD-RBMXの相互作用は,ゲノム安定性におけるNORADの機能にとって重要である.
- NORADはNARC1複合体の組み立てを促進し,ゲノムの完全性にとって重要な新しいトポイソメラーゼ複合体です.
- lncRNAは,RNA結合タンパク質複合体の構成を調節する役割を果たします.
関連する概念動画
DNA Topoisomerases
35.6K
Topoisomerases are enzymes that relax overwound DNA molecules during various cell processes, including DNA replication and transcription. These enzymes regulate positive and negative DNA supercoiling without changing the nucleotide sequence. DNA overwinding in a clockwise direction results in positively supercoiled DNA, whereas underwinding in a counterclockwise direction produces negatively supercoiled DNA.
Types and Mechanism of action
Topoisomerases are divided into two main types. ...
Types and Mechanism of action
Topoisomerases are divided into two main types. ...
35.6K
lncRNA - Long Non-coding RNAs
10.0K
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...
10.0K
lncRNA - Long Non-coding RNAs
3.7K
3.7K
Protein Complex Assembly
16.8K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
16.8K
Protein Complex Assembly
2.6K
2.6K
Genome Annotation and Assembly
21.0K
The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
21.0K

