相关实验视频
Updated: Jul 19, 2026

11:32
Mapping RNA-RNA Interactions Globally Using Biotinylated Psoralen
Published on: May 24, 2017
通过剪接因子1识别内部分支部位RNA的结构基础
Z Liu1, I Luyten, M J Bottomley
1European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, D-69117 Heidelberg, Germany.
概括
剪接因子1 (SF1) 在预mRNA中绑定分支点序列 (BPS). 它的KH-QUA2区域形成了一个结合部位,揭示了SF1如何识别BPSRNA以帮助结合体组装.
科学领域:
- 分子生物学分子生物学
- 在RNA分离过程中.
- 蛋白质-RNA 相互作用
背景情况:
- 结合体组装对于基因表达至关重要.
- 剪接因子1 (SF1) 识别了前mRNA中的内子分支点序列 (BPS) UACUAAC.
- 了解SF1-BPS相互作用是阐明结合体形成的关键.
研究的目的:
- 确定SF1对BPSRNA的识别的结构基础.
- 确定负责BPS结合的SF1的特定区域.
- 阐明SF1促进早期结合体组合的机制.
主要方法:
- 对SF1 KH-QUA2地区的结构分析.
- 用RNA结合测定来表征SF1-BPS相互作用.
- 生物化学试验评估SF1在结合体组装中的作用.
主要成果:
- SF1的KH-QUA2区域形成了一个扩大的KH (hnRNP K) 折叠,对于BPS结合至关重要.
- 在KH域内的一个疏水裂识别了BPS (UAAC) 的3'部分,包括分支点腺素.
- QUA2区域特别与BPS的5'核酸 (ACU) 相互作用.
- 在第一个拼接步骤中,分支点腺素被定位为催化剂.
结论:
- SF1使用独特的KH-QUA2域结构用于特定的BPSRNA识别.
- 详细的分子相互作用解释了SF1如何与BPS结合,并有助于预复基因组的形成.
- 这项工作提供了对结合体组装和功能的初始步骤的见解.
相关概念视频
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 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
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...
Pre-mRNA Processing: 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...

