FN Archimer Export Format PT J TI Processing of matched and mismatched rNMPs in DNA by archaeal ribonucleotide excision repair BT AF Reveil, Maurane Chapel, Lucie VOURC'H, Blandine Bossé, Audrey Vialle, Lea Brizard, Raphael Moalic, Yann Jebbar, Mohamed Henneke, Ghislaine AS 1:1;2:1;3:1;4:1;5:1;6:1;7:2;8:2;9:1; FF 1:PDG-REM-EEP-LMEE;2:PDG-REM-EEP-LMEE;3:PDG-REM-EEP-LMEE;4:PDG-REM-BEEP-LMEE;5:PDG-REM-BEEP-LMEE;6:PDG-REM-BEEP-LMEE;7:;8:;9:PDG-REM-BEEP-LMEE; C1 Univ Brest, CNRS, Ifremer, UMR6197 Biologie et Ecologie des Ecosystèmes marins Profonds, 1625 Rte de Sainte-Anne 29280 Plouzané, France Univ Brest, CNRS, Ifremer, UMR6197 Biologie et Ecologie des Ecosystèmes marins Profonds, 1625 Rte de Sainte-Anne 29280 Plouzané, France C2 IFREMER, FRANCE UBO, FRANCE SI BREST SE PDG-REM-EEP-LMEE PDG-REM-BEEP-LMEE UM BEEP-LM2E IN WOS Ifremer UMR WOS Cotutelle UMR DOAJ copubli-france copubli-univ-france IF 5.8 TC 0 UR https://archimer.ifremer.fr/doc/00861/97242/106183.pdf https://archimer.ifremer.fr/doc/00861/97242/106497.pdf LA English DT Article AB Ribonucleoside monophosphates (rNMPs) are the main non-canonical nucleotides in genomic DNA, and their incorporation can occur as mismatches or matches in vivo. To counteract the mutagenic potential of rNMPs in DNA, all organisms evolved ribonucleotide excision repair (RER), a mechanism initiated by type 2 RNase H. Here, we describe the in vitro reconstitution of matched and mismatched rNMP repair using archaeal RER enzymes. Our data suggest two types of RER pathways, including the classical flap RER and a back-up RER with the order of reactions changed for Fen1 and Pols. The genomic rNMP level in RER-deficient or PolB-deficient archaeal cells along with in vitro reconstitution of RER suggest an in vivo role of PolD in RER. Our results provide insights into how matched and mismatched rNMPs may be processed by RER. PY 2023 PD DEC SO Iscience SN 2589-0042 PU Elsevier BV VL 26 IS 12 UT 001131634800001 DI 10.1016/j.isci.2023.108479 ID 97242 ER EF