# OC Root 2nd 3rd 4th PC Gene/Definition OC.187420 Archaea.54336 Euryarchaeota.36670 - fpl.2089 fpl:Ferp_2192 restriction modification system DNA specificity domain protein; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3] OC.187420 Archaea.54336 Euryarchaeota.36670 Thermococcus.11426 tgg.1259 tgg:A3K92_06560 hypothetical protein; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]