ポリアデニラートRNAをポリアデニラートA結合タンパク質によって認識する
R C Deo1, J B Bonanno, N Sonenberg
1Laboratories of Molecular Biophysics, The Rockefeller University, New York, New York 10021, USA.
Cell
|September 28, 1999
まとめ
mRNAに結合するヒトのポリ・ア・結合タンパク質 (PABP) の構造が明らかにされ,ポリ・ア・テイルを認識する方法が示されました. この発見は,真核生物における翻訳とmRNAの安定性についての洞察を提供します.
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:
- 多分子A結合タンパク質 (PABP) は,真核生物の遺伝子発現に不可欠である.
- PABPは3'mRNAのポリ (A) 尾に結合し,翻訳とmRNAの安定性に影響を与えます.
- PABPの構造を理解することは,その規制機能を明確にするための鍵です.
研究 の 目的:
- ヒトのPABPとRNAリガンドのコクリスタル構造を決定する.
- PABPとポリ・ア・テイルとの分子相互作用を解明する.
- 翻訳とmRNA代謝におけるPABPの役割の構造的基礎を提供すること.
主な方法:
- 解像度2.6AのX線結晶学. 解像度2.6AのX線結晶学. 解像度2.6AのX線結晶学. 解像度2.6AのX線結晶学.
- ポリアデニラートRNAによるヒトPABP (RRM1/2ドメイン) の共結晶化.
- 構造分析と分子モデリング.
主要な成果:
- 構造は,PABPのRRM1/2ドメインによって形成された連続したRNA結合 troughを明らかにします.
- ポリアデニラートRNAは,結合 trough. 内の拡張された形状を採用します.
- 保存されたRNPモチーフ残基とアデニン塩基間の特定の接触がRNA認識を媒介する.
- PABP RRM1/2の保全された水性/酸性表面は,他のタンパク質との相互作用を示唆しています.
結論:
- 判定された構造は,PABPがポリ・A・テイルを認識するための詳細な分子メカニズムを提供します.
- この構造的な洞察は,PABPが翻訳開始とmRNAの衰退における役割を理解する上で極めて重要です.
- 保存された表面は,変換因子との相互作用を媒介し,規制研究のためのターゲットを提供することができます.
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 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 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-seq
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
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...
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...


