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相关概念视频

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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Nucleic Acid Structure01:25

Nucleic Acid Structure

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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...
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Nucleic Acids02:43

Nucleic Acids

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes,...
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RNA-seq03:21

RNA-seq

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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...
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RNA Splicing01:32

RNA Splicing

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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...
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Nucleic acids02:43

Nucleic acids

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes,...
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相关实验视频

Updated: Jun 23, 2025

Analyzing and Building Nucleic Acid Structures with 3DNA
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Analyzing and Building Nucleic Acid Structures with 3DNA

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在预测的3DRNA结构中结结的文物.

Bartosz A Gren1, Maciej Antczak2,3, Tomasz Zok2

  • 1Centre of New Technologies, University of Warsaw, Warsaw, Poland.

PLoS computational biology
|June 20, 2024
PubMed
概括
此摘要是机器生成的。

RNA结构预测算法,特别是机器学习模型,经常产生在实验数据中找不到的拓结和纠. 这项研究分析了CASP15RNA模型以识别这些文物,并建议改进评估方法.

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相关实验视频

Last Updated: Jun 23, 2025

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Probing RNA Structure with Dimethyl Sulfate Mutational Profiling with Sequencing In Vitro and in Cells
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科学领域:

  • 计算生物学 计算生物学
  • 结构生物学 结构生物学
  • 生物信息学是一种生物信息学.

背景情况:

  • 在蛋白质数据库中的实验确定RNA结构中,拓结是罕见的.
  • 最近的发现包括在实验RNA中的第一个三叶草结和拉索形状,但这些仍然是例外的.
  • 计算型RNA结构预测算法,特别是基于机器学习的算法,通常会产生结结的RNA折叠和结构纠.

研究的目的:

  • 在提交给CASP15竞赛的RNA模型中分析拓结和结构纠.
  • 确定与生成这些结结纠结的RNA构造相关的预测方法.
  • 在预测模型中研究有助于RNA纠易感性的结构特征.

主要方法:

  • 来自CASP15竞赛的所有3DRNA结构预测模型的分析.
  • 拓分析用于识别和分类预测RNA结构中的节点和纠.
  • 识别的拓特征与使用的特定预测算法之间的相关性.

主要成果:

  • CASP15 RNA模型表现出各种类型的拓结和结构纠.
  • 基于机器学习的RNA结构预测器比传统方法更容易产生这些工件.
  • 特定的结构特征与预测期间对纠的易感性增加有关.

结论:

  • 预测算法可以在RNA模型中引入诸如节点和纠之类的拓文物.
  • 需要在RNA结构预测中改进评估指标,以检测和避免这种算法工件.
  • 仔细评估预测的RNA模型至关重要,以防止发布具有不寻常纠的算法生成结构.