# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.187435 Archaea.71572 Euryarchaeota.56768 Methanosarcina.8277 Methanosarcina_siciliae.4458 msw.957 msw:MSSIT_0939 Type I restriction-modification system, specificity subunit S; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]