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arXiv 1203.4802q-bio.GN
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Shotgun测序数据计算归一化的无参考算法

A Reference-Free Algorithm for Computational Normalization of Shotgun Sequencing Data

C. Titus Brown, Adina Howe, Qingpeng Zhang, Alexis B. Pyrkosz, Timothy H. Brom

摘要:

基因组、转录组、扩增的单细胞基因组和宏基因组的深度鸟枪测序和分析使得能够对广泛的生物体和生态系统进行调查。然而,短读数据集的采样变化和现代测序仪的高测序错误率在数据解释中提出了许多新的计算挑战。这些挑战导致了新的映射工具类和{ \em de novo}汇编器的开发。这些算法受到测序通量持续改进的挑战。在这里,我们描述了数字归一化,一个单程计算算法,系统化的覆盖率在鸟枪测序数据集,从而减少采样变异,丢弃冗余数据,并删除大多数错误。数字标准化显著地减小了鸟枪法数据集的大小,并降低了{ \em de novo}序列组装的存储器和时间要求,所有这些都没有显著影响所生成的重叠群的内容。我们将数字归一化应用于微生物基因组数据、扩增的单细胞基因组数据和转录组数据的组装。我们的实现可以自由使用和修改。

英文摘要:

Deep shotgun sequencing and analysis of genomes, transcriptomes, amplified single-cell genomes, and metagenomes has enabled investigation of a wide range of organisms and ecosystems. However, sampling variation in short-read data sets and high sequencing error rates of modern sequencers present many new computational challenges in data interpretation. These challenges have led to the development of new classes of mapping tools and {\em de novo} assemblers. These algorithms are challenged by the continued improvement in sequencing throughput. We here describe digital normalization, a single-pass computational algorithm that systematizes coverage in shotgun sequencing data sets, thereby decreasing sampling variation, discarding redundant data, and removing the majority of errors. Digital normalization substantially reduces the size of shotgun data sets and decreases the memory and time requirements for {\em de novo} sequence assembly, all without significantly impacting content of the generated contigs. We apply digital normalization to the assembly of microbial genomic data, amplified single-cell genomic data, and transcriptomic data. Our implementation is freely available for use and modification.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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