Impact of ribonucleotide incorporation by DNA polymerases β and λ on oxidative base excision repair

Verfasser / Beitragende:
[Emmanuele Crespan, Antonia Furrer, Marcel Rösinger, Federica Bertoletti, Elisa Mentegari, Giulia Chiapparini, Ralph Imhof, Nathalie Ziegler, Shana J.; id_orcid 0000-0001-6808-5950 Sturla, Ulrich Hübscher, Barbara Van Loon, Giovanni Maga]
Ort, Verlag, Jahr:
2016
Enthalten in:
Nature Communications, 7, p. 10805
Format:
Artikel (online)
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024 7 0 |a 10.3929/ethz-b-000113967  |2 doi 
024 7 0 |a 10.1038/ncomms10805  |2 doi 
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245 0 0 |a Impact of ribonucleotide incorporation by DNA polymerases β and λ on oxidative base excision repair  |h [Elektronische Daten]  |c [Emmanuele Crespan, Antonia Furrer, Marcel Rösinger, Federica Bertoletti, Elisa Mentegari, Giulia Chiapparini, Ralph Imhof, Nathalie Ziegler, Shana J.; id_orcid 0000-0001-6808-5950 Sturla, Ulrich Hübscher, Barbara Van Loon, Giovanni Maga] 
246 0 |a Nat Commun 
506 |a Open access  |2 ethresearch 
520 3 |a Oxidative stress is a very frequent source of DNA damage. Many cellular DNA polymerases (Pols) can incorporate ribonucleotides (rNMPs) during DNA synthesis. However, whether oxidative stress-triggered DNA repair synthesis contributes to genomic rNMPs incorporation is so far not fully understood. Human specialized Pols β and λ are the important enzymes involved in the oxidative stress tolerance, acting both in base excision repair and in translesion synthesis past the very frequent oxidative lesion 7,8-dihydro-8-oxoguanine (8-oxo-G). We found that Pol β, to a greater extent than Pol λ can incorporate rNMPs opposite normal bases or 8-oxo-G, and with a different fidelity. Further, the incorporation of rNMPs opposite 8-oxo-G delays repair by DNA glycosylases. Studies in Pol β- and λ-deficient cell extracts suggest that Pol β levels can greatly affect rNMP incorporation opposite oxidative DNA lesions. 
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700 1 |a Crespan  |D Emmanuele  |e joint author 
700 1 |a Furrer  |D Antonia  |e joint author 
700 1 |a Rösinger  |D Marcel  |e joint author 
700 1 |a Bertoletti  |D Federica  |e joint author 
700 1 |a Mentegari  |D Elisa  |e joint author 
700 1 |a Chiapparini  |D Giulia  |e joint author 
700 1 |a Imhof  |D Ralph  |e joint author 
700 1 |a Ziegler  |D Nathalie  |e joint author 
700 1 |a Sturla  |D Shana J.; id_orcid 0000-0001-6808-5950  |e joint author 
700 1 |a Hübscher  |D Ulrich  |e joint author 
700 1 |a Van Loon  |D Barbara  |e joint author 
700 1 |a Maga  |D Giovanni  |e joint author 
773 0 |t Nature Communications  |d London : Nature Publishing Group  |g 7, p. 10805  |x 2041-1723 
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950 |B ETHRESEARCH  |P 700  |E 1-  |a Mentegari  |D Elisa  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Chiapparini  |D Giulia  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Imhof  |D Ralph  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Ziegler  |D Nathalie  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Sturla  |D Shana J.; id_orcid 0000-0001-6808-5950  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Hübscher  |D Ulrich  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Van Loon  |D Barbara  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Maga  |D Giovanni  |e joint author 
950 |B ETHRESEARCH  |P 773  |E 0-  |t Nature Communications  |d London : Nature Publishing Group  |g 7, p. 10805  |x 2041-1723 
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