# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.187469 Archaea.71584 Euryarchaeota.56781 Methanosarcina.8297 Methanosarcina_siciliae.4511 msw.1467 msw:MSSIT_1454 Type I restriction-modification system, specificity subunit S; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]