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相关概念视频

Overview of Transposition and Recombination02:13

Overview of Transposition and Recombination

18.7K
Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
18.7K
DNA-only Transposons02:57

DNA-only Transposons

17.1K
DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...
17.1K
LTR Retrotransposons03:08

LTR Retrotransposons

19.3K
LTR retrotransposons are class I transposable elements with long terminal repeats flanking an internal coding region. These elements are less abundant in mammals compared to other class I transposable elements. About 8 percent of human genomic DNA comprises LTR retrotransposons. Some of the common examples of LTR retrotransposons are Ty elements in yeast and Copia elements in Drosophila.
The internal coding region of LTR retrotransposons and their mechanism of transposition closely resembles a...
19.3K
Non-LTR Retrotransposons03:18

Non-LTR Retrotransposons

13.1K
As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
13.1K
Transposons01:24

Transposons

1.2K
Transposons, or "jumping genes," are small mobile genetic elements (MGEs) that range from 700 to 40,000 base pairs in length. They are found in all organisms and can move within the same chromosome or transfer to different chromosomes. In some cases, transposons can also jump between different host DNA molecules, such as plasmids or viruses, contributing to genetic variability.Barbara McClintock first discovered these mobile genetic elements in the 1940s while studying maize genetics, and she...
1.2K
Cis-regulatory Sequences02:02

Cis-regulatory Sequences

11.5K
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...
11.5K

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相关实验视频

Updated: Jan 6, 2026

Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity
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Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity

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创建:一种基于注意力的新型框架,用于高效地分类可转移的元素.

Yang Qi1, Yiqi Chen1, Yingfu Wu1

  • 1School of Computer Science, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an 710129, China.

Briefings in bioinformatics
|November 16, 2025
PubMed
概括
此摘要是机器生成的。

创建,一个新的框架,通过整合全球和本地序列特征,准确地分类可转换元素 (TE). 这种机器学习方法增强了基因组注释和进化研究.

关键词:
注意力机制注意力机制深度学习是一种深度学习.一个层次的分类分类.可转移的元素可以转移.

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Determination of the Optimal Chromosomal Locations for a DNA Element in Escherichia coli Using a Novel Transposon-mediated Approach
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Determination of the Optimal Chromosomal Locations for a DNA Element in Escherichia coli Using a Novel Transposon-mediated Approach
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科学领域:

  • 基因组学就是基因组学.
  • 生物信息学是一种生物信息学.
  • 计算生物学 计算生物学

背景情况:

  • 可移植元素 (TE) 是对基因组调节和进化至关重要的移动DNA序列.
  • 精确的TE分类对于理解其基因组影响至关重要.
  • 现有的基于对齐和机器学习的方法在捕获TE特征方面存在局限性.

研究的目的:

  • 开发一个新的框架,CREATE,用于高效和准确的可转换元素 (TE) 分类.
  • 解决现有方法在捕捉特E的多尺度特征方面的局限性.
  • 为了提高在真核生物基因组中TE注释的准确性.

主要方法:

  • 使用卷积神经网络 (CNN) 和具有注意力机制的循环神经网络 (RNN).
  • 整合的全球模式分布和TEs的局部序列配置文件.
  • 实施了具有九个父节点分类器的层次分类策略.

主要成果:

  • 与现有的 TE 类型注释方法相比,CREATE 显示出更高的性能.
  • 该框架在层次分类任务中实现了高精度.
  • CREATE有效地捕捉了全球和本地特征,以改进TE分类.

结论:

  • 在TE注释准确度方面,CREATE提供了显著的进步.
  • 拟议的框架显示了基因组研究和进化研究的巨大潜力.
  • CREATE提供了一种高效准确的解决方案来对可转换元素进行分类.