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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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Genome Annotation and Assembly03:36

Genome Annotation and Assembly

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The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
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Genomic DNA in Prokaryotes00:46

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The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
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Replication in Prokaryotes01:32

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DNA replication has three main steps: initiation, elongation, and termination. Replication in prokaryotes begins when initiator proteins bind to the single origin of replication (ori) on the cell's circular chromosome. Replication then proceeds around the entire circle of the chromosome in each direction from the two replication forks, resulting in two DNA molecules.
Many Proteins Work Together to Replicate the Chromosome
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Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies
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一步一步的细菌基因组比较

Dennis Carhuaricra-Huaman1,2, João Carlos Setubal3

  • 1Programa de Pós-Graduação Interunidades em Bioinformática, Instituto de Matemática e Estatística, Universidade de São Paulo, Sao Paulo, SP, Brazil.

Methods in molecular biology (Clifton, N.J.)
|May 31, 2024
PubMed
概括

这项研究提供了一个全面的生物信息学工作流程,用于分析细菌基因组. 研究人员可以使用该协议来探索细菌多样性,识别关键基因,并使用开源工具了解进化关系.

关键词:
细菌 细菌是一种细菌.潘格诺姆是一个名字.人类遗传学分析进行比较的基因组学.

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科学领域:

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

背景情况:

  • 数以千计的细菌基因组序列公开可用,为详细的多样性研究提供了巨大的潜力.
  • 比较基因组学能够对细菌种群及其遗传构成进行深入分析.

研究的目的:

  • 描述一个完整的生物信息学工作流程,用于对细菌基因组进行比较分析.
  • 为具有基本生物信息学专业知识的研究人员提供一个实用的,逐步的协议.

主要方法:

  • 工作流包括基因组注释,泛基因组重建和可视化,以及遗传学分析.
  • 它使用了最先进的开源工具,并使用Salmonella enterica serovar Typhimurium进行了证明.
  • 该协议依赖于Linux命令和脚本,使用R环境可视化结果.

主要成果:

  • 工作流程有助于识别特定的遗传元素,包括抗菌素耐药性基因,毒性因子和菌体序列.
  • 它可以对细菌数据集进行详细的比较基因组调查.
  • 这项研究为细菌基因组分析提供了一种可复制的方法.

结论:

  • 这种生物信息学工作流使研究人员能够进行细菌的详细比较基因组研究.
  • 该协议增强了细菌多样性的探索和功能相关基因组特征的识别.
  • 可访问的,开源工具使先进的细菌基因组学研究变得更容易实现.