# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.187238 Bacteria.1255081 Thermodesulfobacteria.1719 Thermodesulfobacterium.1460 - top.164 top:TOPB45_0148 restriction modification system DNA specificity domain protein; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3] OC.187239 Bacteria.184952 Proteobacteria.636131 Epsilonproteobacteria.23210 Sulfurospirillum.3965 sba.2272 sba:Sulba_2351 restriction endonuclease S subunit; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]