# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.187398 Archaea.69691 Euryarchaeota.54870 Methanosarcina.4974 Methanosarcina_mazei.3446 mma.2917 mma:MM_2978 type I restriction-modification system specificity subunit; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3] OC.187398 Archaea.69691 Euryarchaeota.54870 Methanosarcina.4974 - mvc.2723 mvc:MSVAZ_2756 Type I restriction-modification system, specificity subunit S; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]