スプライスサイトでの使用と代替スプライシングにおけるユビキチン型タンパク質Hub1の役割
関連する実験動画
Updated: Jun 1, 2026
08:53
A Reporter Based Cellular Assay for Monitoring Splicing Efficiency
Published on: September 15, 2021
Shravan Kumar Mishra1, Tim Ammon, Grzegorz M Popowicz
1Department of Molecular Cell Biology, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany.
Nature
|May 27, 2011
まとめ
ユビキチンのようなタンパク質Hub1は,スプライソームに結合することによって,代替スプライシングを促進します. この相互作用は,特定のスプライスサイトを認識し,遺伝子製品の多様性を可能にするために不可欠です.
科学分野:
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
- バイオケミストリー バイオケミストリー
背景:
- 代替スプライシングは,真核生物の遺伝子製品を多様化する.
- スプライスゾーム媒介によるスプライス部位の認識は,正確なRNA処理に不可欠です.
研究 の 目的:
- 代替スプライシングにおけるウビキチン型のタンパク質Hub1の役割を調査する.
- 接合部位の選択にハブ1が影響するメカニズムを解明する.
主な方法:
- Hub1-spliceosomeの相互作用の構造的および生化学的分析.
- ハブ1欠乏変異体におけるスプライシング欠陥を評価するために,サッカロミセス・セレヴィセアを用いた遺伝学的研究.
主要な成果:
- Hub1は,スプライソソームタンパク質のHIND要素に非共性的に結合する.
- Hub1は,非正規の5'スプライスサイトの使用を容易にし,SRC1の代替スプライシングを促進します.
- Hub1の喪失,またはHub1-HINDの相互作用の欠陥は,代替スプライシングを損なう.
結論:
- Hub1は,スプライソームの機能を改変することによって,代替スプライシングの新たなレギュレータとして作用します.
- ユビキチンのようなタンパク質によるスプライソームの非共性変異は,スプライスサイト利用の重要なメカニズムです.
関連する概念動画
02:18Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
02:18Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
01:32Pre-mRNA Processing: 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...
01:32RNA 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...
01:32RNA 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...
02:41Chromatin Structure Regulates pre-mRNA Processing
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
The chromatin structure, especially...