未开发的多样性和分子遗传特征的奇马林和phuz编码菌体
Shize Sun1, Cunyuan Li1, Jia Sun1
1College of Life Sciences, Shihezi University, Shihezi, 832003, Xinjiang, China.
BMC genomics
|November 18, 2025
概括
形成核的菌体产生保护性外,帮助基因组复制. 这项研究确定了1103种这种菌体,揭示了它们在人类口腔样本中的多样性和存在,并提供了对它们的生态作用和健康影响的见解.
科学领域:
- 微生物学 微生物学
- 病毒学 病毒学
- 基因组学就是基因组学.
背景情况:
- 形成核的菌体是大型菌体,在细菌感染期间形成保护性蛋白质外.
- 这种外可以保护菌体基因组复制不受宿主防御机制的影响.
- 有限的遗传特征阻碍了对这些菌体的理解.
研究的目的:
- 使用基因组数据识别和描述形成核的菌体.
- 探索这些菌体的多样性,分布和进化关系.
- 调查它们的潜在生态功能和对人类健康的相关性.
主要方法:
- 利用HMMER和RoseTTAFold来识别基于奇马林和PhuZ管蛋白基因的菌体.
- 从1600万个数据集中分析了1103个菌体基因组 (406个高质量基因组).
- 使用vConTACT2进行集群分析和遗传学分析.
主要成果:
- 确定了1103个形成核的菌体的数据集,包括406个高质量的基因组 (200-324 kb).
- 将这些菌体分为21个不同的病毒群.
- 遗传学分析显示独立的分类,与其他大型菌体不同.
- 检测到跨生态系统的菌体分布,包括人类口腔样本.
- 有注释的基因组揭示了DNA复制,修复和反防御系统的基因.
结论:
- 这项研究提供了一个全面的数据集和核形成菌体的分析.
- 这些菌体表现出独特的适应性和多样化的分布,包括在与人类相关的环境中.
- 这些发现为未来研究它们的生态作用和对人类健康的影响奠定了基础.
相关概念视频
Modern Molecular Taxonomy
554
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...
554
Diversity of Archaea II
433
Archaea, one of the three domains of life, exhibit remarkable diversity and adaptability, thriving in both extreme and moderate environments. Historically, most identified archaea have been classified into two major phyla: Euryarchaeota and Crenarchaeota. However, recent molecular studies have expanded this classification to include three additional phyla: Thaumarchaeota, Nanoarchaeota, and Korarchaeota, each exhibiting unique characteristics and ecological roles.Thaumarchaeota: Mesophiles...
433
Applications of Molecular Taxonomy
489
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
489
DNA Bacteriophages
765
Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
765
Genome Size and the Evolution of New Genes
9.0K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
9.0K
Gene Evolution - Fast or Slow?
7.9K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.9K


