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. 2012 Aug;19(8):837-44.
doi: 10.1038/nsmb.2339. Epub 2012 Jul 1.

Unraveling Cell Type-Specific and Reprogrammable Human Replication Origin Signatures Associated With G-quadruplex Consensus Motifs

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Unraveling Cell Type-Specific and Reprogrammable Human Replication Origin Signatures Associated With G-quadruplex Consensus Motifs

Emilie Besnard et al. Nat Struct Mol Biol. .

Abstract

DNA replication is highly regulated, ensuring faithful inheritance of genetic information through each cell cycle. In metazoans, this process is initiated at many thousands of DNA replication origins whose cell type-specific distribution and usage are poorly understood. We exhaustively mapped the genome-wide location of replication origins in human cells using deep sequencing of short nascent strands and identified ten times more origin positions than we expected; most of these positions were conserved in four different human cell lines. Furthermore, we identified a consensus G-quadruplex-forming DNA motif that can predict the position of DNA replication origins in human cells, accounting for their distribution, usage efficiency and timing. Finally, we discovered a cell type-specific reprogrammable signature of cell identity that was revealed by specific efficiencies of conserved origin positions and not by the selection of cell type-specific subsets of origins.

Comment in

  • Replication origins run (ultra) deep.
    Gilbert DM. Gilbert DM. Nat Struct Mol Biol. 2012 Aug;19(8):740-2. doi: 10.1038/nsmb.2352. Nat Struct Mol Biol. 2012. PMID: 22864361 No abstract available.

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References

    1. Genome Res. 2007 Jun;17(6):865-76 - PubMed
    1. EMBO J. 2004 Feb 25;23(4):897-907 - PubMed
    1. J Cell Biol. 1998 Mar 23;140(6):1285-95 - PubMed
    1. Nat Methods. 2006 Aug;3(8):637-46 - PubMed
    1. Mol Biosyst. 2009 Dec;5(12):1703-12 - PubMed

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