# OC Root	2nd	3rd	4th	PC	Gene/Definition
OC.187396	Archaea.65993	Euryarchaeota.51037	Methanococcus.3731	mvn.267	mvn:Mevan_0264   restriction modification system DNA specificity domain; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]