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相关概念视频

Single Nucleotide Polymorphisms-SNPs01:05

Single Nucleotide Polymorphisms-SNPs

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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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Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
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Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
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gutMSNP:人类肠道微生物单核酸多形态的综合数据库.

Kai Qian1, Meiyu Du1, Senwei Tan1

  • 1College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang  150081, China.

Nucleic acids research
|December 8, 2025
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概括

肠道微生物群包含数以百万计的单核酸多态 (SNP),对微生物功能和宿主健康至关重要. 肠MSNP数据库为探索这些SNP及其对肠道微生物基因组的影响提供了全面的资源.

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科学领域:

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

背景情况:

  • 在肠道微生物基因组中,单核酸多态 (SNP) 显著影响微生物的致病性和宿主健康.
  • 了解这些SNP对于阐明微生物功能和微生物群驱动疾病的机制至关重要.
  • 一个大规模的,标准化的SNP存储库对于全面分析至关重要.

研究的目的:

  • 介绍 gutMSNP,一个用户友好的数据库资源人类肠道微生物群SNP.
  • 提供SNP,其注释和相关数据的系统和全面的集合.
  • 为肠道微生物组内SNP分析提供综合工具.

主要方法:

  • 在人类肠道微生物基因组中识别和分类超过1.64亿个SNP.
  • 包括物种级和基因级的微生物记录,以及特定于表型的SNP分布模式.
  • 整合了8146个参考基因组和一个在线SNP捕获工具.

主要成果:

  • 肠道MSNP包含164,015,783个SNP跨肠道微生物基因组在三个置信级别.
  • 该数据库包括364个物种级和8251个基因级记录,详细说明了表型特定的SNP模式.
  • 有8146个参考基因组,以及用于SNP搜索,注释和分析的工具.

结论:

  • 肠MSNP是人类肠道微生物组基于SNP的研究的一个基本资源.
  • 该数据库有助于对微生物功能和宿主微生物相互作用进行详细的调查.
  • 它的全面数据集和分析工具使微生物组研究的研究人员有能力.