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KPop: Accurate, Assembly-Free, and Scalable Comparative Analysis of Microbial Genomes

biorxiv(2022)

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摘要
The recent explosion in the amount of available sequencing data challenges existing analysis techniques. Here we introduce KPop, a novel versatile method based on full k -mer spectra and dataset-specific transformations, through which thousands of assembled or unassembled microbial genomes can be quickly compared. Unlike minimizer-based methods that produce distances and have lower resolution, KPop is able to accurately map sequences onto a low-dimensional space. Extensive validation on simulated and real-life viral and bacterial datasets shows that KPop can correctly separate sequences at both species and sub-species levels even when the overall genomic diversity is low. KPop also rapidly identifies related sequences and systematically outperforms minimizer-based methods. KPop’s code is open-source and available on GitHub at . ### Competing Interest Statement The authors have declared no competing interest.
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