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U1 snRNAのU1 snRNAを含むRNAの4方向の螺旋接合のグローバル折り畳み
D R Duckett1, A I Murchie, D M Lilley
1Department of Biochemistry, University Dundee, United Kingdom.
Cell
|December 15, 1995
まとめ
RNAの螺旋結節は,同軸の積み重ねによって2つの主要な構造に折りたたまれます. その幾何学は,配列とイオン条件によって影響を受け,U1 snRNA結合は,G.A不一致にもかかわらず,その構造を維持しています.
科学分野:
- 分子生物学は分子生物学である.
- 構造生物学 構造生物学とは
- バイオケミストリー バイオケミストリー
背景:
- 螺旋結節は,折りたたまれたRNA分子の3次元構造に不可欠です.
- 彼らの幾何学を理解することは,RNAの機能と調節を解読する鍵です.
研究 の 目的:
- 完全ベースペア化された四方向RNAの螺旋接合のグローバル幾何学を分析する.
- 交差点構造におけるシーケンスとイオン条件の影響を調査する.
- U1 snRNAの四方向交差点の構造的振る舞いを特徴付けるために.
主な方法:
- 比較ゲルエレクトロフォレシスは,RNAの4方向結合のグローバル幾何学を分析するために使用されました.
- 構造イソマーは,コアシアルヘリカルスタッキング中のスタッキングパートナーの代替選択に基づいて特定されました.
主要な成果:
- 四方向のRNA結合は,対方向の同軸の螺旋状の堆積を介して,2つのステレオ化学的に等価な同体のうちの1つに折りたたまれます.
- これらの接点の2つの連続した螺旋軸は,ほぼ直角を形成します.
- 異なったイオン条件下では,シーケンスに依存する重要な構造的変化が観察されました.
- U1 snRNAの四方向結合は,G.A不一致でも,テストされたイオン条件で90度交差した積み重ね構造を維持しました.
結論:
- RNAの4方向の結合は,明確な折り畳み経路と構造的な好みを表しています.
- イオン条件と特定のシーケンスにより,交差点の幾何学が著しく変化します.
- U1のsnRNA結合は,驚くべき構造的安定性を示し,RNAの折り畳み原理の強さを強調しています.
関連する概念動画
RNA Structure
Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
RNA Structure
Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
Ribosomal RNA Synthesis
Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
RNA Structure
The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
Ribosomal RNA Synthesis
Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Nucleic Acid Structure
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...
DNA Structure
DNA has a double-helix structure. The...

