# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.187124 Bacteria.185215 Proteobacteria.798776 Other_proteobacteria.3167 Acidithiobacillus.3082 Acidithiobacillus_caldus.2479 acu.1134 acu:Atc_1135 restriction modification system DNA specificity subunit; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]