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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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Phylogenetic Trees03:21

Phylogenetic Trees

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Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
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Phylogeny01:23

Phylogeny

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Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
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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.
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The Tree of Life - Bacteria, Archaea, Eukaryotes02:40

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The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
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Protein Families

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Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism.   Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members.   If these new proteins contain similar amino acids in key...
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相关实验视频

Updated: Sep 10, 2025

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

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蛋白质结构遗传学

Caroline Puente-Lelievre1,2, Ashar Malik3,4,5, Jordan Douglas2,6

  • 1School of Biological Sciences, The University of Auckland, Auckland, New Zealand.

Genome biology and evolution
|August 21, 2025
PubMed
概括
此摘要是机器生成的。

蛋白质结构遗传学使用3D结构来追踪进化历史,提供对蛋白质进化的见解,特别是在低序列相似性区域. 人工智能的进步现在提供了可访问的结构数据,增强了基因分析.

关键词:
进化生物学分子进化人类遗传学蛋白质结构审查结构遗传学

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Creating and Applying a Reference to Facilitate the Discussion and Classification of Proteins in a Diverse Group

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相关实验视频

Last Updated: Sep 10, 2025

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

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A Practical Guide to Phylogenetics for Nonexperts
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Creating and Applying a Reference to Facilitate the Discussion and Classification of Proteins in a Diverse Group
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科学领域:

  • 分子进化
  • 结构生物学
  • 生物信息学

背景情况:

  • 蛋白质结构比序列更为保存,因此对进化分析具有价值.
  • 在
  • 黄昏地区
  • 低序列相似性对传统的基因组学方法构成挑战.
  • 历史上,高分辨率结构数据的有限性限制了这个领域.

研究的目的:

  • 审查当前的蛋白质结构遗传学.
  • 概述从结构数据中提取进化见解的方法.
  • 突出这一领域的关键应用和未来方向.

主要方法:

  • 使用3D蛋白质结构数据进行遗传学分析.
  • 利用人工智能的突破性技术提供可访问,高质量的结构数据.
  • 从蛋白质结构构建基因树的方法的开发和应用.

主要成果:

  • 蛋白质结构遗传学提供了比单独的序列更大的进化分辨率,特别是在具有挑战性的低相似性区域.
  • 人工智能驱动的结构数据可访问性克服了历史的限制.
  • 目前的方法正在进步, 但仍落后于基于序列的概率模型.

结论:

  • 蛋白质结构遗传学是一个快速发展的领域,具有显著的潜力.
  • 序列和结构数据的整合有望增强遗传学分析.
  • 未来的方向包括进一步发展概率模型和跨学科合作.