# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.226764 Bacteria.577522 Proteobacteria.95742 Betaproteobacteria.138208 Alcaligenes.1964 afa.310 afa:UZ73_01555 heme d1 biosynthesis radical SAM protein NirJ OC.226764 Bacteria.577522 Proteobacteria.95742 Betaproteobacteria.138208 Alcaligenes.1964 afq.2186 afq:AFA_11265 nirJ; heme d1 biosynthesis radical SAM protein NirJ