# OC Root 2nd 3rd 4th PC Gene/Definition OC.187414 Archaea.73337 Euryarchaeota.58555 Methanosarcina.10709 mls.1709 mls:MSLAZ_1777 Type I restriction-modification system, specificity subunit S; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]