游艇:一种基于ANI的统计测试,用于检测甲基因组样本中的微生物存在/不存在
David Koslicki1,2,3,4, Stephen White5, Chunyu Ma3
1Department of Computer Science and Engineering, Pennsylvania State University, State College, PA 16802, United States.
Bioinformatics (Oxford, England)
|January 25, 2024
概括
YACHT 是一种新的元基因组学算法,通过统计假设测试来确定样本中的基因组存在. 它解释了序列分歧和序列深度,提高了低丰度生物的准确性.
科学领域:
- 计算生物学 计算生物学
- 转基因组学是指转基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- 甲基因组学涉及从环境DNA中分析微生物群落.
- 一个关键的任务是识别样本元基因组中的参考基因组.
- 目前的工具缺乏置信区间,这使得解释变得复杂,特别是对于稀少的微生物.
研究的目的:
- 引入YACHT (通过假设测试对社区成员资格的答案是/否),这是一种用于元基因组分析的新算法.
- 为确定基因组在元基因组样本中的存在/缺席提供统计框架.
- 解决现有工具关于信任估计和不完整的参考数据库的局限性.
主要方法:
- 开发了YACHT,这是一个测试元基因组社区成员身份的假设测试框架.
- 纳入的平均核酸标识 (ANI) 来解释序列分歧.
- 模拟不完整的测序深度,以改善存在/缺席呼叫.
主要成果:
- YACHT提供了一个统计框架,用于在元基因组中检测基因组的存在/缺失.
- 该算法考虑了序列分歧和序列深度.
- 使用模拟和真实数据的实验证明了YACHT的准确性和可扩展性.
结论:
- YACHT提供了一种统计学上可靠的基因组基因组识别方法.
- 该方法通过提供不确定性量化来改进现有的工具.
- YACHT作为开源软件可供研究界使用.
相关概念视频
Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
Modern Molecular Taxonomy
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...
Methods to Assess Microbial Populations
Assessing microbial populations is crucial for understanding microbial roles in health, ecology, and industry. Various complementary techniques—both culture-based and molecular—enable detailed analysis of microbial abundance, diversity, and function.Viable Plate CountThe viable plate count is a traditional culture-based method used to estimate the number of living microbes in a sample. After serial dilution, the sample is spread onto nutrient agar plates. Each viable cell forms a visible...
Methods to Assess Microbial Communities
Microbial communities, comprising bacteria, archaea, and eukaryotic microorganisms, inhabit diverse ecosystems and play crucial roles in environmental and biological processes. Their diversity is defined by three main parameters: species richness (the number of distinct species), species abundance (the relative quantity of each species), and species evenness (how uniformly individual species are distributed in various locations). These factors together shape the structure and ecological balance...
Automated Microbial Diagnostics
Automated diagnostic analyzers have transformed clinical microbiology by providing rapid and reliable methods for pathogen identification and antibiotic susceptibility testing. Among these systems, the Vitek 2 is widely used because it automates the traditionally labor-intensive processes of microbial identification (ID) and antibiotic susceptibility testing (AST), delivering standardized and timely results that are essential for effective patient care.Microbial Identification with ID CardsThe...


