関連する実験動画
Updated: Jul 9, 2026

13:47
Chromatin Immunoprecipitation (ChIP) using Drosophila tissue
Published on: March 23, 2012
まとめ
ドロソフィラ5SRNA遺伝子の核細胞の位置は,AまたはBの2段階に分けられます. この位置付けは,規制順序と5のアクセシビリティに影響します.
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
- クロマチンの構造 クロマチンの構造
背景:
- ドロソフィラ・メラノガスターの5SRNA遺伝子クラスタは,373bp単位のタンデムリピートで構成されています.
- 各重複ユニットには,135bpの遺伝子と238bpのスペーサーがあり,全体の長さは二核細胞に近似しています.
研究 の 目的:
- ドロソフィラ・メラノガスターの5SRNA遺伝子リピートにおけるヌクレオソームの位置づけを調査する.
- 5Sの繰り返しの中でマイクロコックスのヌクレアースに敏感な部位を特定し,クロマチンの構造を理解する.
主な方法:
- マイクロコックスの核酸でドロソフィラ核の消化.
- シングルカット制限酵素で精製されたDNAを割る.
- 5Sリピート内のヌクレアゼ敏感部位のマッピング.
主要な成果:
- マイクロコックスの核酵素に敏感な4つの部位がマッピングされました:A1 (bp -110),A1' (bp -80),A2 (bp +80,イントラジェニックコントロール領域内) とB (bp -190).
- これらの部位は,5S遺伝子の繰り返しの上で,2つの可能な核細胞位相 (AとB) を示唆しています.
- フェーズAは,リンカー領域の規制配列を暴露し,フェーズBは,リンカーを遺伝子の5'端に配置する.
結論:
- 核細胞は,5S RNA 遺伝子の繰り返しにおいて,異なる位置づけの相を採用することができる.
- 特定された核細胞の段階化は,規制要素と遺伝子領域のアクセシビリティに影響を与えます.
さらに関連する動画
10:13Immunofluorescent Staining for Visualization of Heterochromatin Associated Proteins in Drosophila Salivary Glands
Published on: August 21, 2021
04:59Single Nucleotide Polymorphism-sensitive FISH Detection of Locus-specific Ribosomal RNA Transcription in Drosophila melanogaster
Published on: March 28, 2025
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Euchromatin
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Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...