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相关概念视频

Restriction Enzymes01:11

Restriction Enzymes

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Restriction enzymes are bacterial enzymes used to cut DNA in a sequence-specific manner. To cleave DNA, they bind to specific palindromic sequences called restriction sites. Such palindromic DNA sequences or inverted repeats are commonly found in regions of functional significance, such as the origin of replication, gene operator sites, and regions containing transcription termination signals.
The host bacteria protect their own genomic DNA from these enzymes by methylating these sites. Some...
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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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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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评估限制酶选择在保护基因组学中的减少表示序列.

Ainhoa López1,2, Carlos Carreras1,2, Marta Pascual1,2

  • 1Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain.

Molecular ecology resources
|September 14, 2023
PubMed
概括

限制酶的选择影响了保护基因组学中的基因组表征. 基因型测序 (GBS) 分析揭示了酶特异性偏见,强调需要仔细选择和高质量的基因组进行准确的人口研究.

关键词:
总体支付系统 (GBS) 是一个.国家统一计划 (SNP) 是一个国家统一计划.保护基因组学 保护基因组学功能性注释功能性注释减少表示序列排序减少表示序列排序.参考基因组是指基因组中的基因组.限制酶 限制酶 限制酶

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科学领域:

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

背景情况:

  • 减少表示测序,如基因型测序 (GBS),对于非模型生物的保护基因组学至关重要.
  • 测序基因位点的分布可能受到限制酶识别位点的GC含量的影响,这可能会影响基因组表示.

研究的目的:

  • 评估由GBS产生的位点的分布和功能组成.
  • 评估不同限制酶 (EcoT22I和ApeKI) 对鱼类和海物种基因组表示的影响.
  • 调查采样外基,内基和基因间区域的潜在偏差.

主要方法:

  • 在两种鱼类 (Symphodus ocellatus,S. tinca) 和两种海 (Paracentrotus lividus,Arbacia lixula) 上应用了GBS.
  • 将测序的位置映射到最接近的可用的参考基因组 (Labrus bergylta,Strongylocentrotus purpuratus).
  • 使用基因本体学 (GO) 术语分类的位置和分析的功能;对参考基因组的模拟酶效应.

主要成果:

  • 在模拟和实验数据中检测到异构或异构区域的基因位点的酶依赖丰富.
  • 在经验数据中,总和适应候选位点之间没有发现显著差异.
  • 确定了所有四种物种的共享,一般功能,用于映射的位置.

结论:

  • 限制酶选择在GBS研究中显著影响基因组表征.
  • 高质量的注释参考基因组对于准确的保护基因组分析至关重要.
  • 需要考虑酶选择偏差,以避免误解人口结构和局部适应信号.