# OC Root 2nd 3rd 4th PC Gene/Definition OC.276843 Archaea.2007 Euryarchaeota.5183 Methanoregula.1414 mbn.897 mbn:Mboo_0883 threonyl-tRNA synthetase; K01868 threonyl-tRNA synthetase [EC:6.1.1.3] OC.276843 Archaea.2007 Euryarchaeota.5183 Methanoregula.1414 mfo.1985 mfo:Metfor_2142 threonyl-tRNA synthetase; K01868 threonyl-tRNA synthetase [EC:6.1.1.3]