体扫描仪:一种可重新配置的机器学习框架,用于细菌的基因组和元基因组特征注释
Dreycey Albin1, Michelle Ramsahoye1, Eitan Kochavi1
1Department of Computer Science, University of Colorado at Boulder, Boulder, CO, United States.
Frontiers in microbiology
|October 2, 2024
概括
体扫描仪 (PhageScanner) 是一个新的开源平台,可以在基因组和转基因组数据中识别体病毒蛋白 (PVPs). 它简化了分析,并优于现有的菌素蛋白注释机器学习模型.
科学领域:
- 微生物学 微生物学
- 生物信息学是一种生物信息学.
- 计算生物学 计算生物学
背景情况:
- 菌体丰富,但许多蛋白质功能仍然未知.
- 体病毒蛋白 (PVPs) 是至关重要的,但使用传统方法很难识别.
- 现有的工具缺乏对基因组和元基因组数据和数据策划框架的全面分析.
研究的目的:
- 开发一个开源平台,PhageScanner,用于有效识别和注释菌体蛋白质.
- 为数据策划和为菌体基因组学创建新型机器学习模型提供框架.
- 改进菌体病毒蛋白 (PVPs) 和其他菌体编码的蛋白质的预测.
主要方法:
- 开发了PhageScanner,这是一个具有GUI的开源平台,用于数据收集,模型训练,测试和预测.
- 实现了基于BLAST的分类器和长短期记忆 (LSTM) 分类器.
- 应用了PhageScanner来预测六个未经表征的菌体基因组中的PVP,并开发了菌体编码毒素的模型.
主要成果:
- 格扫描仪能够简化基因组和元基因组数据的注释.
- 基于BLAST的分类器在与现有的机器学习模型相比,表现优越.
- 在新的菌体基因组中成功预测了PVP,并确定了菌体编码的毒素,展示了平台的实用性.
结论:
- 体扫描仪为细菌体蛋白质注释提供了一个强大的和用户友好的解决方案.
- 该平台有助于发现新型菌素蛋白和开发新的预测模型.
- 这项工作促进了对菌体生物学及其编码功能的理解.
相关概念视频
Lytic Cycle of Bacteriophages
70.4K
Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...
70.4K
CRISPR and crRNAs
16.9K
Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
16.9K
Lysogenic Cycle of Bacteriophages
61.9K
In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
61.9K
Genome Annotation and Assembly
18.8K
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.
18.8K
Conservative Site-specific Recombination and Phase Variation
5.9K
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
5.9K


