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相关概念视频

RNA Structure01:23

RNA Structure

71.2K
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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Protein Folding Quality Check in the RER01:29

Protein Folding Quality Check in the RER

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ER is the primary site for the maturation and folding of soluble and transmembrane secretory proteins. The calnexin cycle is a specific chaperone system that folds and assesses the confirmation of N-glycosylated proteins before they can exit the ER lumen. The primary players of this quality check pipeline are the lectins, ER-resident chaperones, and a glucosyl transferase enzyme. In case the calnexin system in the lumen fails to salvage a misfolded protein, it is transported to the cytoplasm...
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Protein Folding01:22

Protein Folding

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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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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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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 12, 2025

Probing RNA Structure with Dimethyl Sulfate Mutational Profiling with Sequencing In Vitro and in Cells
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蒙特卡洛反向RNA折叠的过程

Tristan Cazenave1, Hamza Touzani2

  • 1LAMSADE, Université Paris Dauphine - PSL, CNRS, Paris, France. cazenave@lamsade.dauphine.fr.

Methods in molecular biology (Clifton, N.J.)
|September 23, 2024
PubMed
概括
此摘要是机器生成的。

我们开发了一个变压器神经网络,以改善特定结构的RNA序列设计. 这种人工智能方法在解决复杂的逆RNA折叠问题上优于传统方法.

关键词:
蒙特卡洛搜索 蒙特卡洛搜索 蒙特卡洛搜索这是一个RNARNARNARNARNA.变压器 变压器 变压器

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Optical Tweezers to Study RNA-Protein Interactions in Translation Regulation
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Assessment of Immunologically Relevant Dynamic Tertiary Structural Features of the HIV-1 V3 Loop Crown R2 Sequence by ab initio Folding
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科学领域:

  • 计算生物学 计算生物学
  • 生物信息学是一种生物信息学.
  • 机器学习 机器学习

背景情况:

  • 反向RNA折叠问题对于设计功能性RNA分子至关重要.
  • 现有的方法往往难以从序列中预测RNA结构的复杂性.
  • 蒙特卡洛搜索算法为优化序列设计提供了一个框架.

研究的目的:

  • 开发一种人工智能驱动的方法来解决反向RNA折叠问题.
  • 为了利用变压器神经网络在RNA序列设计中产生有效的先验.
  • 为了评估通用嵌套推出政策调整 (GNRPA) 算法的性能,使用变压器生成的前.

主要方法:

  • 在Rfam数据库上训练一个变压器神经网络,用于反向RNA折叠.
  • 使用训练过的变压器来生成 Eterna100 拼图的 priors.
  • 在解决RNA折叠实例之前,在变压器上应用通用化嵌套推出策略适应 (GNRPA) 算法.
  • 对比结果与手工制作的启发式.

主要成果:

  • 变压器神经网络成功生成了RNA折叠问题的先验.
  • 在变压器之前的指导下,GNRPA有效地解决了来自Eterna100数据集的实例.
  • 变压器生成的前置在与手工制作的启发方式相比,表现出更高的性能.

结论:

  • 人工智能驱动的先验显著提高了搜索算法的性能,例如用于逆RNA折叠的GNRPA.
  • 变压器神经网络为推进RNA序列设计提供了一个强大的工具.
  • 这种方法对设计具有所需结构和功能的新型RNA分子充满希望.