Fig. 3.

Cartoon of core and specific key metabolic features in the Nitrospira pangenome, as predicted from genome annotation. AIO arsenite oxidase, CynS cyanate hydratase, FDH formate dehydrogenase, H2ase hydrogenase, MSP methionine salvage pathway, SOR sulfite dehydrogenase, TrHb2 2/2 hemoglobin group 2. Enzyme complexes of the electron transport chain are labeled by Roman numerals. * N. moscoviensis possesses an octaheme nitrite reductase (ONR) putatively involved in nitrite reduction to ammonia