相关实验视频
Updated: May 12, 2026

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Using the E1A Minigene Tool to Study mRNA Splicing Changes
Published on: April 22, 2021
通过Sam68的酸化来对剪接的信号依赖调节
Nathalie Matter1, Peter Herrlich, Harald König
1Forschungszentrum Karlsruhe GmbH, Institut für Toxikologie und Genetik, Postfach 3640, D-76021 Karlsruhe, Germany.
Nature
|December 13, 2002
概括
该研究显示,由细胞外信号调节的Sam68蛋白修饰控制了替代拼接. 这种机制将信号传导途径与基因表达复杂性联系起来.
科学领域:
- 分子生物学分子生物学
- 细胞信号传输 细胞信号传输
- 遗传学 是一个遗传学.
背景情况:
- 人类的复杂性源于通过替代前传递 RNA 拼接生成多样化的蛋白质.
- 替代拼接需要精确的调节,类似于转录控制,经常受到细胞外信号的影响.
- 信号传导和拼接调节之间的相互作用对细胞过程至关重要.
研究的目的:
- 调查信号传导途径与替代拼接调节之间的联系.
- 为了识别能响应细胞外线的替代拼接的新型调节者.
- 阐明Sam68蛋白在信号调节的替代拼接中的作用.
主要方法:
- 研究Sam68作为细胞外信号调节激酶 (ERK) 的目标.
- 分析了Sam68与CD44v5异构体的拼接调节元件的结合.
- 利用Sam68的强制表达和抑制,以及局部定向的突变发生,以评估其在拼接中的功能.
主要成果:
- Sam68被确定为一种新的ERK标蛋白.
- Sam68与CD44v5外因子结合,这是一个由Ras信号通路调节的部位.
- 通过ERK介导的Sam68的酸化增强了CD44v5外因子的包含,而Sam68的抑制消除了Ras路径诱导的拼接.
结论:
- Sam68作为替代拼接的关键调节器,集成细胞外信号.
- ERK对Sam68的蛋白质修饰对于其在拼接调节中的功能至关重要.
- 这项研究将Sam68定义为依赖信号的替代拼接调节器的原型.
相关概念视频
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 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...
Chromatin 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...
Alternative 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...
Pre-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...
Alternative 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...

