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相关概念视频

Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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Proteomics01:33

Proteomics

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A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
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Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

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The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
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Multi-species Conserved Sequences02:51

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Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
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相关实验视频

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Mass Spectrometry-Based Proteomics Analyses Using the OpenProt Database to Unveil Novel Proteins Translated from Non-Canonical Open Reading Frames
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基于多种蛋白质相似性的采样,从大型数据库中选择代表性基因组.

Rémi-Vinh Coudert1,2, Jean-Philippe Charrier2, Frédéric Jauffrit2

  • 1Université Claude Bernard Lyon 1, LBBE, UMR 5558, CNRS, VAS, 69622, Villeurbanne, France.

BMC bioinformatics
|May 6, 2025
PubMed
概括
此摘要是机器生成的。

一种新的方法,即基于多重蛋白相似性的采样 (MPS-Sampling),有效地从大型数据集中选择代表性的细菌基因组. 这种方法确保了分类学和遗传学多样性,而不依赖传统方法,解决了基因组数据分析的关键挑战.

关键词:
盘点指数 盘点指数 盘点指数GTDB GTDB GTDB 的意思是什么基因组收集 基因组收集基因组脱复制是如何发生的Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes Prokaryotes在RiboDBDB中,我们可以看到

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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:

  • 基因组数据库正在迅速扩大,导致高冗余性和可变的数据质量.
  • 选择具有代表性的基因组子集对于基因组研究至关重要,但目前的方法对于大型数据集往往是有偏见的和缓慢的.

研究的目的:

  • 引入MPS采样 (基于多种蛋白质相似性的采样),这是一种用于快速,可扩展和高效的基因组采样的新方法.
  • 针对大型基因组数据集的现有有偏见和耗时的采样方法的局限性.

主要方法:

  • MPS采样利用同源蛋白家族来分组相似的基因组.
  • 它采用两步聚类过程来划分同质基因组.
  • 在这些组中,基于用户定义的标准选择了代表性基因组.

主要成果:

  • 使用48个核糖体蛋白家族,对178,203个细菌基因组进行了MPS采样.
  • 它成功生成了代表性基因组集,显著减少了数据集大小 (0.3%至32.17%).
  • 选择的基因组显示了完整数据集的强大的分类学和遗传学代表性.

结论:

  • MPS采样提供了一种高效,快速和可扩展的解决方案,用于在实际计算限制内采样大型基因组集合.
  • 该方法避免了与分类学信息和遗传学树推断相关的偏见.
  • MPS-Sampling满足了对生物信息学中可靠的基因组采样工具的日益增长的需求.