相关实验视频
Updated: Jun 19, 2026

Novel RNA-Binding Proteins Isolation by the RaPID Methodology
Published on: September 30, 2016
通过PAZ域对超悬特定小干扰RNA识别的结构基础
Jin-Biao Ma1, Keqiong Ye1, Dinshaw J Patel1
1Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York 10021, USA.
通过PAZ域的小干扰RNA (siRNA) 末结合对于RNA沉默至关重要. 这项结构研究揭示了PAZ如何定siRNA复合体,促进基因沉默通路.
科学领域:
- 分子生物学分子生物学
- 结构生物学 结构生物学
- 生物化学 生物化学
背景情况:
- 短RNAs调节基因沉默,影响病毒的抗性和发育.
- RNA沉默涉及Dicer. 处理的小干扰RNA (siRNA).
- 阿尔戈纳特蛋白质与siRNA结合,形成沉默复合体.
研究的目的:
- 确定与siRNA结合的人类阿尔戈诺特PAZ域的晶体结构.
- 阐明PAZ域对siRNA结合的机制.
主要方法:
- 射线晶体 (2.6 A分辨率) 的X射线晶体学
- 生物化学结合测定试验
主要成果:
- 该PAZ域以顺序独立的方式结合一个9-mer siRNA-like复合体.
- PAZ 定了 2 核酸 3' 悬架,并结合了基的骨干.
- 该PAZ域限制了补充链的5'-终端残留物.
结论:
- PAZ作为一个siRNA终结结合模块,用于RNA沉默中的转移.
- 在沉默效应器复合体内,PAZ引导RNA 3'端.
更多相关视频
10:06Engineering Artificial Factors to Specifically Manipulate Alternative Splicing in Human Cells
Published on: April 26, 2017
09:04Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
Published on: September 21, 2017
相关概念视频
RNA Structure
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 Interference
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
Conservation of Protein Domains Over Different Proteins
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
RNA Structure
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 Interference
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
RNA Structure
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...