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相关概念视频

RNA Structure01:23

RNA Structure

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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...
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RNA Structure01:19

RNA Structure

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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...
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Protein and Protein Structure02:15

Protein and Protein Structure

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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
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Chromatin Structure and RNA Splicing02:41

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Cis-regulatory Sequences02:02

Cis-regulatory Sequences

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Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
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RNA Stability01:53

RNA Stability

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Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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相关实验视频

Updated: Jan 28, 2026

RNA Secondary Structure Prediction Using High-throughput SHAPE
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解码RNA三重螺旋:从序列和二次结构识别.

Margherita A G Matarrese1, Michela Quadrini2, Nicole Luchetti1

  • 1Department of Engineering, Università Campus Bio-Medico di Roma, Via Àlvaro del Portillo, 21, 00128 Rome, Italy.

Briefings in bioinformatics
|January 26, 2026
PubMed
概括
此摘要是机器生成的。

研究人员开发了一个新的框架和工具,TripleMatcher,以识别RNA三重螺旋体,这对基因调节至关重要. 这种方法从二次RNA数据中准确地检测出这些结构,有助于理解长非编码RNA函数.

关键词:
在RNA模式搜索中寻找RNA模式.RNA的二级结构是RNA的二级结构.预测RNA结构 预测RNA结构长非编码RNA是什么意思没有编码的RNA.

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相关实验视频

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RNA Secondary Structure Prediction Using High-throughput SHAPE
13:42

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Identification of Circular RNAs using RNA Sequencing
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Identification of Footprints of RNA:Protein Complexes via RNA Immunoprecipitation in Tandem Followed by Sequencing RIPiT-Seq
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科学领域:

  • 分子生物学分子生物学
  • RNA结构和功能 RNA结构和功能
  • 生物信息学是一种生物信息学.

背景情况:

  • 长非编码RNAs (lncRNAs) 通过与DNA,RNA和蛋白质的相互作用来调节基因表达.
  • 涉及霍格斯基配对的RNA三重螺旋体是 lncRNA 稳定性和功能的关键结构动机,以 MALAT1.1 为例.
  • 准确检测RNA三重螺旋对于理解它们的调节作用至关重要.

研究的目的:

  • 开发一种基于二次结构的框架,用于注释和检测RNA三环螺旋体.
  • 介绍TripleMatcher,一个用于识别和过潜在RNA三环候选者的计算工具.
  • 通过已知的三螺旋RNA验证框架的性能,并将其应用于大规模的RNA查.

主要方法:

  • 扩展了点括号符号,包括Hoogsteen联系人的第三行.
  • 开发了TripleMatcher以搜索三螺旋模式,根据C1'-C1'距离过,并合并重叠区域.
  • 与八个预测因子进行了基准测试,并对4160个RNA的大数据集进行了前性应用.

主要成果:

  • 在一个由8个RNA (8/8检测) 组成的测试组中,TripleMatcher成功地定位了所有经过实验验证的三重螺旋.
  • 几何过显著提高了精度 (0.42到0.81) 和准确性 (F1从0.42到0.62),同时保持了灵敏度.
  • 从150,990个原始候选物中,前性选确定了97个在7个分子 (包括人类端粒酶复合物) 中的几何可行的三螺旋候选物.

结论:

  • 拟议的框架和TripleMatcher提供了一种有效和准确的方法,用于从二次结构中识别RNA三重螺旋体.
  • 这种方法促进了新型三螺旋结构的发现,并增强了对lncRNA调节机制的理解.
  • 已识别的候选物适用于有针对性的实验验证,促进RNA生物学和基因调控方面的研究.