Capturing the dynamics of genome replication on individual ultra-long nanopore sequence reads

Müller, Carolin A., Boemo, Michael A., Spingardi, Paolo, Kessler, Benedikt M., Kriaucionis, Skirmantas, Simpson, Jared T. and Nieduszynski, Conrad A. (2019) Capturing the dynamics of genome replication on individual ultra-long nanopore sequence reads. Nature Methods, 16 (5). pp. 429-436. ISSN 1548-7091

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Abstract

Replication of eukaryotic genomes is highly stochastic, making it difficult to determine the replication dynamics of individual molecules with existing methods. We report a sequencing method for the measurement of replication fork movement on single molecules by detecting nucleotide analog signal currents on extremely long nanopore traces (D-NAscent). Using this method, we detect 5-bromodeoxyuridine (BrdU) incorporated by Saccharomyces cerevisiae to reveal, at a genomic scale and on single molecules, the DNA sequences replicated during a pulse-labeling period. Under conditions of limiting BrdU concentration, D-NAscent detects the differences in BrdU incorporation frequency across individual molecules to reveal the location of active replication origins, fork direction, termination sites, and fork pausing/stalling events. We used sequencing reads of 20–160 kilobases to generate a whole-genome single-molecule map of DNA replication dynamics and discover a class of low-frequency stochastic origins in budding yeast. The D-NAscent software is available at https://github.com/MBoemo/DNAscent.git.

Item Type: Article
Additional Information: Funding information: This work was supported by Biotechnology and Biological Sciences Research Council grant BB/N016858/1 (to C.A.M. and C.A.N.) and Wellcome Trust Investigator Award 110064/Z/15/Z (to C.A.N.). J.T.S. is supported by the Ontario Institute for Cancer Research through funds provided by the Government of Ontario and the Government of Canada through Genome Canada and Ontario Genomics (OGI-136). P.S. is funded by a Medical Research Council studentship. P.S. and S.K. are funded by Ludwig Cancer Research. C.A.M is a Queen’s College Extraordinary Junior Research Fellow in Physiology. M.A.B. is a St. Cross College Emanoel Lee Junior Research Fellow.
Uncontrolled Keywords: biotechnology,biochemistry,molecular biology,cell biology ,/dk/atira/pure/subjectarea/asjc/1300/1305
Faculty \ School: Faculty of Science > School of Biological Sciences
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Depositing User: LivePure Connector
Date Deposited: 07 Sep 2022 14:31
Last Modified: 28 Jan 2025 21:47
URI: https://ueaeprints.uea.ac.uk/id/eprint/87854
DOI:

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