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関連する概念動画

RNA Splicing01:32

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 Splicing01:32

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...
Transfer RNA Synthesis02:36

Transfer RNA Synthesis

One of the unique features of tRNA is the presence of modified bases. In some tRNAs, modified bases account for nearly 20% of the total bases in the molecule. Altogether, these unusual bases protect the tRNA from enzymatic degradation by RNases.
Each of these chemical modifications is carried by a specific enzyme, post-transcription. All of these enzymes have unique base and site-specificity. Methylation, the most common chemical modification, is carried by at least nine different enzymes, with...
Alternative RNA Splicing02:18

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...
Alternative RNA Splicing02:18

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...
Transfer RNA Synthesis02:36

Transfer RNA Synthesis

One of the unique features of tRNA is the presence of modified bases. In some tRNAs, modified bases account for nearly 20% of the total bases in the molecule. Altogether, these unusual bases protect the tRNA from enzymatic degradation by RNases.
Each of these chemical modifications is carried by a specific enzyme, post-transcription. All of these enzymes have unique base and site-specificity. Methylation, the most common chemical modification, is carried by at least nine different enzymes, with...

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関連する実験動画

Updated: May 10, 2026

Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
11:34

Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins

Published on: August 9, 2019

U1 snRNAは"スクリプト"を書き換える.

Evan C Merkhofer, Tracy L Johnson

    Cell
    |July 10, 2012
    PubMed
    まとめ
    この要約は機械生成です。

    スプライシングファクターは,ポリアデニレーション機構に影響することによって,メッセンジャーRNA (mRNA) の長さを制御する. この発見は,活発な脳と免疫細胞における遺伝子発現を理解するために極めて重要です.

    さらに関連する動画

    Analysis of Spliceosomal snRNA Localization in Human Hela Cells Using Microinjection
    07:35

    Analysis of Spliceosomal snRNA Localization in Human Hela Cells Using Microinjection

    Published on: August 6, 2019

    A Reporter Based Cellular Assay for Monitoring Splicing Efficiency
    08:53

    A Reporter Based Cellular Assay for Monitoring Splicing Efficiency

    Published on: September 15, 2021

    関連する実験動画

    Last Updated: May 10, 2026

    Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
    11:34

    Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins

    Published on: August 9, 2019

    Analysis of Spliceosomal snRNA Localization in Human Hela Cells Using Microinjection
    07:35

    Analysis of Spliceosomal snRNA Localization in Human Hela Cells Using Microinjection

    Published on: August 6, 2019

    A Reporter Based Cellular Assay for Monitoring Splicing Efficiency
    08:53

    A Reporter Based Cellular Assay for Monitoring Splicing Efficiency

    Published on: September 15, 2021

    科学分野:

    • 分子生物学は分子生物学である.
    • 遺伝子発現の規制について
    • RNA 処理 RNA 処理

    背景:

    • ユカリオットメッセンジャーRNA (mRNA) の発現は,多数のRNA処理因子に依存しています.
    • mRNAの長さの正確な調節は,細胞機能と遺伝子発現にとって非常に重要です.
    • 神経細胞と免疫細胞は,特に活性化すると,複雑な遺伝子発現パターンを表します.

    研究 の 目的:

    • プレ-mRNAスプライシング因子とポリアデニレーション機構の相互作用を調査する.
    • mRNAの長さの調節が特定の細胞の遺伝子発現にどのように影響するかを理解する.

    主な方法:

    • 特定のプレ-mRNAスプライシング因子の機能を調査した.
    • ポリアデニレーション複合体とmRNA処理に対する効果を分析した.
    • 活性化された神経細胞と免疫細胞における影響を調べた.

    主要な成果:

    • プレ-mRNAスプライシングファクターがポリアデニレーション機構の活性を直接調節することを示した.
    • この調節がmRNAの長さの調節につながることを示した.
    • 活性化ニューロンと免疫細胞における同型表現に対する有意な影響を観察した.

    結論:

    • プレ-mRNAスプライシングファクターは,スプライシングを超えて,mRNA処理に影響を与える,規制的な役割を果たします.
    • このメカニズムは,特にダイナミックな細胞状態において,遺伝子発現の正確な制御に関する洞察を提供します.
    • 発見は,神経および免疫の文脈で細胞機能のためのmRNA長さの調節の重要性を強調しています.