FN Archimer Export Format PT J TI Phylogenetic Diversity of Lhr Proteins and Biochemical Activities of the Thermococcales aLhr2 DNA/RNA Helicase BT AF Hajj, Mirna Langendijk-Genevaux, Petra Batista, Manon Quentin, Yves Laurent, Sebastien Capeyrou, Régine Abdel-Razzak, Ziad Flament, Didier Chamieh, Hala Fichant, Gwennaele Clouet-d’Orval, Béatrice Bouvier, Marie AS 1:1,2;2:1;3:1;4:1;5:3;6:4;7:2;8:3;9:2;10:1;11:1,4;12:1,4; FF 1:;2:;3:;4:;5:PDG-REM-EEP-LMEE;6:;7:;8:PDG-REM-EEP-LMEE;9:;10:;11:;12:; C1 Laboratoire de Microbiologie et Génétique Moléculaires, UMR5100, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, Université Paul Sabatier, F-31062 Toulouse, France Laboratory of Applied Biotechnology (LBA3B), Azm Center for Research in Biotechnology and Its Application, EDST, Lebanese University, Tripoli 1300, Lebanon Ifremer, Univ Brest, CNRS, UMR 6197 Laboratoire de Microbiologie des Environnements Extrêmes, F-29280 Plouzané, France Laboratoire de Biologie Moléculaire, Cellulaire et du Développement, UMR5077, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, Université Paul Sabatier, F-31062 Toulouse, France C2 UNIV TOULOUSE, FRANCE UNIV LEBANESE, LEBANON IFREMER, FRANCE UNIV TOULOUSE, FRANCE SI BREST SE PDG-REM-EEP-LMEE UM BEEP-LM2E IN WOS Ifremer UMR DOAJ copubli-france copubli-univ-france copubli-int-hors-europe copubli-sud IF 6.064 TC 4 UR https://archimer.ifremer.fr/doc/00702/81418/85807.pdf https://archimer.ifremer.fr/doc/00702/81418/85808.zip LA English DT Article DE ;SF2 helicases;aLhr2 helicases;archaea;RNA metabolism;DNA repair;Thermococcales AB Helicase proteins are known to use the energy of ATP to unwind nucleic acids and to remodel protein-nucleic acid complexes. They are involved in almost every aspect of DNA and RNA metabolisms and participate in numerous repair mechanisms that maintain cellular integrity. The archaeal Lhr-type proteins are SF2 helicases that are mostly uncharacterized. They have been proposed to be DNA helicases that act in DNA recombination and repair processes in Sulfolobales and Methanothermobacter. In Thermococcales, a protein annotated as an Lhr2 protein was found in the network of proteins involved in RNA metabolism. To investigate this, we performed in-depth phylogenomic analyses to report the classification and taxonomic distribution of Lhr-type proteins in Archaea, and to better understand their relationship with bacterial Lhr. Furthermore, with the goal of envisioning the role(s) of aLhr2 in Thermococcales cells, we deciphered the enzymatic activities of aLhr2 from Thermococcus barophilus (Tbar). We showed that Tbar-aLhr2 is a DNA/RNA helicase with a significant annealing activity that is involved in processes dependent on DNA and RNA transactions PY 2021 PD JUN SO Biomolecules SN 2218-273X PU MDPI AG VL 11 IS 7 UT 000676681800001 DI 10.3390/biom11070950 ID 81418 ER EF