関連する実験動画
Updated: Jun 16, 2026

10:25
Using the E1A Minigene Tool to Study mRNA Splicing Changes
Published on: April 22, 2021
代替スプライシングによる真核タンパク質の拡張
Timothy W Nilsen1, Brenton R Graveley
1Center for RNA Molecular Biology, Department of Biochemistry, Case Western Reserve University, School of Medicine, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA. twn@case.edu
Nature
|January 30, 2010
まとめ
代替スプライシングは,単一の遺伝子が複数のタンパク質を作り出すことを可能にし,複雑な生物が当初予測されたよりも少ない遺伝子でどのように発達するかを説明します. このプロセスは,哺乳類の複雑さを理解する上で鍵となるものです.
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
- 発達生物学 発達生物学について
背景:
- 生物の複雑さは,膨大な数の遺伝成分を必要とします.
- 初期の推定では,哺乳類の遺伝子は10万以上になると予測されていた.
- 実際の遺伝子の数は驚くほど少なく,酵母のような単純な生物と似ています.
研究 の 目的:
- 哺乳類における予測された遺伝子数と実際の遺伝子数との差異を説明するために.
- 生物の複雑性を生み出すための代替スライシングの役割を強調する.
- 限られた遺伝子組が,多種多様なタンパク質を生成する方法を調査する.
主な方法:
- 遺伝子発現データの分析.
- 比較ゲノミクス 比較ゲノミクス
- 代替スプライシングイベントを特定するための分子経路分析.
主要な成果:
- 哺乳類は,当初見積もっていたよりも著しく少ない遺伝子を持っている.
- 代替スプライシングは,複雑な生物のタンパク質の多様性に大きく貢献しています.
- 単一の遺伝子は,複数のメッセンジャーRNA (mRNA) トランスクリプト,そしてその後,異なるタンパク質を生成することができます.
結論:
- 代替スプライシングは,機能的なタンパク質を拡張することによって,より低い遺伝子数を補償します.
- このメカニズムは,複雑な生命体の発達と維持に極めて重要です.
- 代替スプライシングの理解は,生物の複雑性の遺伝的基礎を解読する鍵です.
関連する概念動画
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...
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...
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...
What is Gene Expression?
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then processed and...
What is Gene Expression?
Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...

