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Next-generation Sequencing03:00

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The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
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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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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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A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
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Continuous-time systems have continuous input and output signals, with time measured continuously. These systems are generally defined by differential or algebraic equations. For instance, in an RC circuit, the relationship between input and output voltage is expressed through a differential equation derived from Ohm's law and the capacitor relation,
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使用Nextclade进行基于PRRSV-2ORF5的快速血统分类.

Michael A Zeller1, Jennifer Chang2, Giovani Trevisan1

  • 1Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, United States.

Frontiers in veterinary science
|September 30, 2024
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概括

猪生殖和呼吸系统综合征病毒2型 (PRRSV-2) 的新遗传命名法使标准化血统分类成为可能. 该系统与Nextclade集成,有助于识别突变并将菌株与疫苗进行比较,以改善猪健康管理.

关键词:
在ORF5的ORF5PRRSVV 在这个问题上.这是分类分类的分类.血统谱系 血统谱系 血统谱系一个子系子系.

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科学领域:

  • 兽医病毒学 兽医病毒学
  • 分子流行病学分子流行病学
  • 生物信息学是一种生物信息学.

背景情况:

  • 猪生殖和呼吸系统综合征病毒 (PRRSV) 对猪健康和农业经济构成重大全球威胁.
  • 现有的PRRSV-2遗传特征是分散的,阻碍了有效的全球监测和控制策略.
  • 标准化遗传命名对于一致的PRRSV-2血统识别和跟踪至关重要.

研究的目的:

  • 建立和实施基于PRRSV-2 ORF5的基因谱系的标准遗传命名法.
  • 为快速的PRRSV-2血统分类和分析开发一个用户友好的生物信息学工具.
  • 为了促进当代PRRSV-2菌株与历史数据和疫苗序列的比较.

主要方法:

  • 开发基于PRRSV-2 ORF5的基因命名法,扩展以前的分类.
  • 创建一个支架序列数据集,包括历史/当代菌株和疫苗,用于Nextclade v3.0.0.
  • 使用Augur管道与DQ478308.1作为基因分析和分类器生成的参考.

主要成果:

  • 现在可以通过Nextstrain和PRRSView获得PRRSV-2 ORF5谱系分配的功能Nextclade分类器.
  • 该分类器提供了遗传学分类,序列指标 (质量,突变) 和机密的用户分析.
  • 提交的序列是基因排列的,允许与参考病毒,疫苗菌株和元数据进行比较.

结论:

  • 实施的Nextclade工作流提供了一种标准化和高效的PRRSV-2血统分类方法.
  • 该工具有助于识别关键突变,并将当前的PRRSV-2菌株与相关疫苗进行比较.
  • 通过这种标准化分类系统,可以支持加强PRRSV-2的监测和控制策略.