6.5.1.B3 723755 Characterization of a heat-stable enzyme possessing GTP-dependent RNA ligase activity from a hyperthermophilic archaeon, Pyrococcus furiosus Pyrococcus furiosus 6.5.1.B3 721179 The structure of Pyrococcus horikoshii 2'-5' RNA ligase at 1.94 A resolution reveals a possible open form with a wider active-site cleft Pyrococcus horikoshii 6.5.1.B3 721179 The structure of Pyrococcus horikoshii 2'-5' RNA ligase at 1.94 A resolution reveals a possible open form with a wider active-site cleft Pyrococcus horikoshii OT-3