# OC Root	2nd	3rd	4th	5th	PC	Gene/Definition
OC.187168	Bacteria.185274	Proteobacteria.723949	Gammaproteobacteria.332145	Nitrosococcus.4418	noc.2745	noc:Noc_2904   Restriction modification system DNA specificity domain
OC.187169	Bacteria.185286	Cyanobacteria.53082	Nostoc.17339	Nostoc_sp_.14058	nop.1593	nop:Nos7524_1656   restriction endonuclease S subunit; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]