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相关概念视频

RNA Structure01:23

RNA Structure

79.4K
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...
79.4K
RNA Structure01:19

RNA Structure

7.9K
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...
7.9K
Ribosome Profiling02:24

Ribosome Profiling

4.2K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
4.2K
Nucleic Acid Structure01:25

Nucleic Acid Structure

9.7K
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...
9.7K

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相关实验视频

Updated: Feb 26, 2026

Probing RNA Structure with Dimethyl Sulfate Mutational Profiling with Sequencing In Vitro and in Cells
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Probing RNA Structure with Dimethyl Sulfate Mutational Profiling with Sequencing In Vitro and in Cells

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用FRET引导的RNA3D结构的选择.

Mirko Weber1, Felix Erichson1, Maciej Antczak2,3

  • 1Laserinstitut Hochschule Mittweida, University of Applied Sciences Mittweida, Technikumplatz 17, 09648 Mittweida, Germany.

Nucleic acids research
|February 25, 2026
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概括
此摘要是机器生成的。

本研究介绍了一种以弗斯特共振能量转移 (FRET) 为指导的方法,用于预测RNA的3D结构. 该方法通过将计算建模与单分子FRET实验相结合,成功识别了RNA的构造状态.

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相关实验视频

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科学领域:

  • 生物分子建模模型
  • 结构生物学是结构生物学.
  • RNA生物物理学的RNA生物物理

背景情况:

  • 由于复杂的能量格局和形状多样性,预测RNA结构具有挑战性.
  • 准确的RNA结构集合对于理解结合和折叠至关重要.
  • 现有的计算方法与大型RNA分子的异质性作斗争.

研究的目的:

  • 开发和验证一个以弗斯特共振能量转移 (FRET) 为指导的战略,用于预测RNA的3D结构.
  • 为了确定与单分子FRET (smFRET) 实验数据一致的RNA构造状态.
  • 将计算式RNA建模与实验生物物理技术相结合.

主要方法:

  • 使用RNAComposer,FARFAR2和AlphaFold3.3进行预测的3DRNA结构.
  • 基于沃森-克里克基配对和eRMSD值的验证模型.
  • 使用FRETraj预测FRET分布的计算机染料对可访问的接触体积.
  • 将预测的FRET分布与实验smFRET数据进行比较,以确定兼容状态.

主要成果:

  • 成功预测了与实验smFRET数据一致的RNA3D结构.
  • 证明了in silico预测的RNA结构可以重现实验转移效率.
  • 确定了与观察到的FRET状态相容的特定RNA构造状态.
  • 验证了FRET引导工作流的实用性,用于分析灵活的RNA动机.

结论:

  • 以FRET为指导的工作流程能够准确预测RNA构造状态.
  • 这种综合性方法增强了对RNA折叠和动态的研究.
  • 该方法为捕捉灵活RNA基因中的多样性构造状态提供了基础.