# OC Root 2nd 3rd 4th PC Gene/Definition OC.187503 Bacteria.888008 Firmicutes.279856 Firmicutes___Clostridia.148591 bprl.1255 bprl:CL2_14300 Restriction endonuclease S subunits; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]