# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.187430 Archaea.71444 Euryarchaeota.56637 Methanosarcina.8105 Methanosarcina_siciliae.3955 msj.1339 msj:MSSAC_1342 Type I restriction-modification system, specificity subunit S; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]