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G-Quadruplexes and DNA Replication Origins

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DNA Replication

Part of the book series: Advances in Experimental Medicine and Biology ((AEMB,volume 1042))

Abstract

DNA replication ensures the accurate duplication of the genome at each cell cycle. During S phase, tens of thousands of replication origins throughout the vertebrate genome are activated according to a spatiotemporal program. The genome-wide mapping of origins in several model systems has identified G-quadruplexes—higher-order DNA structures formed from G-rich sequences—as potential key regulators of origin activity. Here, I describe genetic experiments demonstrating the role of G-quadruplexes in origin function. I discuss the different means by which G-quadruplexes might regulate origin function. Finally, comparisons of replicon organization in the three domains of life suggest that G-quadruplexes may have retained a conserved role in origin function during evolution.

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Acknowledgments

This work was supported by grants from the Association pour la Recherche sur le Cancer (Equipe labellisée), the Agence Nationale pour la Recherche (ANR-15-CE12-0004-01), and the IdEx Paris Sorbonne to M-N.P. M-N.P is supported by the Inserm.

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Correspondence to Marie-Noëlle Prioleau .

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© 2017 Springer Nature Singapore Pte Ltd.

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Prioleau, MN. (2017). G-Quadruplexes and DNA Replication Origins. In: Masai, H., Foiani, M. (eds) DNA Replication. Advances in Experimental Medicine and Biology, vol 1042. Springer, Singapore. https://doi.org/10.1007/978-981-10-6955-0_13

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