Comprehensive comparison of the third-generation sequencing tools for bacterial 6mA profiling
Beifang Lu,
Zhihao Guo,
Xudong Liu,
Ying Ni,
Letong Xu,
Jiadai Huang,
Tianmin Li,
Tongtong Feng,
Runsheng Li () and
Xin Deng ()
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Beifang Lu: City University of Hong Kong
Zhihao Guo: City University of Hong Kong
Xudong Liu: City University of Hong Kong
Ying Ni: City University of Hong Kong
Letong Xu: City University of Hong Kong
Jiadai Huang: City University of Hong Kong
Tianmin Li: City University of Hong Kong
Tongtong Feng: City University of Hong Kong
Runsheng Li: City University of Hong Kong
Xin Deng: City University of Hong Kong
Nature Communications, 2025, vol. 16, issue 1, 1-18
Abstract:
Abstract DNA N6-methyladenine (6mA) serves as an intrinsic and principal epigenetic marker in prokaryotes, impacting various biological processes. To date, limited advanced sequencing technologies and analyzing tools are available for bacterial DNA 6mA. Here, we evaluate eight tools designed for the 6mA identification or de novo methylation detection. This assessment includes Nanopore (R9 and R10), Single-Molecule Real-Time (SMRT) Sequencing, and cross-reference with 6mA-IP-seq and DR-6mA-seq. Our multi-dimensional evaluation report encompasses motif discovery, site-level accuracy, single-molecule accuracy, and outlier detection across six bacteria strains. While most tools correctly identify motifs, their performance varies at single-base resolution, with SMRT and Dorado consistently delivering strong performance. Our study indicates that existing tools cannot accurately detect low-abundance methylation sites. Additionally, we introduce an optimized method for advancing 6mA prediction, which substantially improves the detection performance of Dorado. Overall, our study provides a robust and detailed examination of computational tools for bacterial 6mA profiling, highlighting insights for further tool enhancement and epigenetic research.
Date: 2025
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DOI: 10.1038/s41467-025-59187-2
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