从短读测序数据中组装和注释病毒元基因组
Mihnea R Mangalea1, Kristopher Keift2, Breck A Duerkop1
1Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, USA.
Methods in molecular biology (Clifton, N.J.)
|May 31, 2023
概括
这项研究详细介绍了病毒转基因组学方法,用于识别人类便样本中的病毒. 它展示了像VIBRANT这样的计算工具,用于病毒基因组表征和功能分析.
科学领域:
- 病毒学 病毒学
- 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:
- 病毒转基因组学对于在复杂的生物样本中检测和描述病毒群体至关重要.
- 下一代测序 (NGS) 平台,特别是Illumina,为元基因组分析提供必要的短读数据.
- 了解人类便中的病毒种群对于微生物组研究和健康评估至关重要.
研究的目的:
- 描述和验证用于从人类便样本中识别和表征病毒基因组 (包括菌体和真核病毒) 的方法.
- 提出一个综合性的工作流程,整合病毒样粒子净化,NGS,基因组组装和计算分析.
- 突出VIBRANT工具用于自动病毒基因组表征和功能注释的实用性.
主要方法:
- 从人类便样本中净化类似病毒的颗粒.
- 净化病毒DNA和整个元基因组的下一代测序 (Illumina).
- 简短读取的基因组组装和无组装的读取映射到参考数据库.
- 应用VIBRANT计算工具用于病毒序列识别和功能注释.
主要成果:
- 从人类便样本成功识别和描述了各种病毒基因组序列,包括菌体和真核病毒.
- 证明VIBRANT在复杂的元基因组数据集中的自动病毒发现和功能分析中的有效性.
- 对病毒基因组分析的基于组装和无组装方法的验证.
结论:
- 描述的多方法方法为人类便的病毒基因组分析提供了一个强大的框架.
- 像VIBRANT这样的计算工具显著提高了病毒社区特征的效率和准确性.
- 这些方法有助于更深入地了解人类病毒组及其在健康和疾病中的作用.
相关概念视频
Genome Annotation and Assembly
18.9K
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.
18.9K
RNA-seq
10.1K
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
10.1K
Protein Complex Assembly
10.7K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
10.7K
Size and Structure of Viral Genomes
68
Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
68


