# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.187450 Archaea.61502 Euryarchaeota.46423 Methanobacterium.3394 Methanobacterium_formicicum.2122 mfc.283 mfc:BRM9_0287 hsdS; type I restriction-modification system S ubunit HsdS; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]