# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.309747 Bacteria.880415 Firmicutes.265144 Firmicutes___Clostridia.128862 Hungateiclostridium.4855 ccl.3311 ccl:Clocl_3942 nitrogen regulatory protein PII; K04751 nitrogen regulatory protein P-II 1