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Updated: Aug 11, 2026

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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
Published on: October 9, 2014
2種類のタンパク質キナーゼCの発現と性質:単一の遺伝子からの代替スプライシング
まとめ
ラットの脳タンパク質キナーゼCの2つの亜種が特定され,カルボキシル末端領域で異なっている. 単一の遺伝子の代替スプライシングにより,これらの異なるタンパク質キナーゼC酵素が生成されます.
科学分野:
- 分子生物学は分子生物学である.
- 神経科学は神経科学である.
- バイオケミストリー バイオケミストリー
背景:
- タンパク質キナーゼC (PKC) は,細胞シグナル伝達に不可欠な酵素の家族です.
- ネズミの脳には複数のPKC亜種が存在し,複雑な調節作用を暗示しています.
- PKC亜種の構造的・機能的多様性を理解することは,神経経路の解読に不可欠です.
研究 の 目的:
- ネズミの脳タンパク質キナーゼCの2つの異なる亜種をクローンして発現させる.
- これらのPKC亜種の生化学的および運動的特性を特徴付ける.
- これらの亜種を生成するための分子基盤を調査する.
主な方法:
- コンプリメンタリーDNA (cDNA) のクローン化とCOS 7細胞での発現.
- 活性化剤 (Ca2+,フォスフォリピド,ダイアシルグリセロール) に反応する酵素活性を決定する生化学的測定法.
- 酵素動力学と物理性質の分析.
- 部分ゲノム構造分析. 部分ゲノム構造分析.
主要な成果:
- 2つのPKC亜種 (671および673アミノ酸) がうまく発現しました.
- 両酵素ともPKCの典型的な活性を示し,標準の活性化剤に反応した.
- 発現した酵素は生化学的および運動的に, ネズミの脳PKCと区別することができなかった.
- 配列分析は,カルボキシル末端領域に限られた差異を示し,代替スプライシングを示唆しました.
- ゲノム解析により,両方の亜種は,代替スプライシングによる単一の遺伝子から生じていることが確認されました.
結論:
- ネズミの脳タンパク質キナーゼC亜種は,単一の遺伝子の代替スプライシングから生じる可能性があります.
- これらの亜種は,カルボキシル末端領域において微妙に異なっていますが,基本的な酵素特性を共有しています.
- 代替スプライシングは,脳内のPKCファミリー内で機能的多様性を生み出すためのメカニズムを提供します.
関連する概念動画
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...
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...
Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
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...
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...
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...

