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相关概念视频

Phylogenetic Trees03:21

Phylogenetic Trees

45.3K
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.
45.3K
Phylogeny01:23

Phylogeny

43.9K
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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Protein Networks02:26

Protein Networks

3.9K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
3.9K
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

5.7K
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...
5.7K
Rab Proteins01:14

Rab Proteins

3.9K
Rab proteins constitute the largest family of monomeric GTPases, of which 70 members are present in humans. Rab proteins and their effectors regulate consecutive stages of vesicle transport such as vesicle transport, docking, and fusion to the correct recipient membrane.
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
3.9K
Rab Cascades01:25

Rab Cascades

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Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
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相关实验视频

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Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline
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Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline

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计数具有很少网状顶点的遗传网络:状和网状可见网络.

Yu-Sheng Chang1, Michael Fuchs2

  • 1Department of Mathematical Sciences, National Chengchi University, Taipei, 116, Taiwan.

Bulletin of mathematical biology
|May 18, 2024
PubMed
概括

我们为使用新型图形和生成函数方法提供了对数网和可见网状网络的精确计数,这些网络只有少数网状顶点. 这些发现促进了对复杂网络结构的数学理解.

科学领域:

  • 组合学是一种组合学.
  • 图形理论 图形理论
  • 计算生物学 计算生物学

背景情况:

  • 了解生物网络的结构至关重要.
  • 网状网络和可见网状网络是遗传学中的关键模型.
  • 计算这些具有有限网络化的网络类型在计算上具有挑战性.

研究的目的:

  • 为了获得精确的和不对称的计数结果,为格网络和网状可见网络.
  • 分析具有少量网状顶点的网络.
  • 为了探索最大限度的网状网状可见网络.

主要方法:

  • 组件图形方法. 组件图形方法.
  • 产生函数的技术.
  • 分析组合学用于格网络.

主要成果:

  • 精确的和非对称的公式来计算具有很少网状顶点的状网络.
  • 准确的和非对称的公式来计算有网点的可见网络,只有很少的有网点的顶点.
  • 对于最大限度的网状网-可见网络的公式.

结论:

关键词:
组件图形方法的组件图形方法.计数编目 计数编目 计数编目道网络的网格网络.遗传遗传网络是一个遗传遗传网络.网状 - 可见网络的网状.

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  • 组件图形方法和生成函数为网络计数提供了强大的工具.
  • 这项研究提供了对生物网络模型复杂性的精确数学见解.
  • 结果为分析进化网络的理论基础做出贡献.