Fig. 5From: Complete genome sequence analysis of the thermoacidophilic verrucomicrobial methanotroph “Candidatus Methylacidiphilum kamchatkense” strain Kam1 and comparison with its closest relativesOverview of the nitrogen metabolism of “Ca. Methylacidiphilum kamchatkense” Kam1. Letters inside arrows refers to the enzymes catalyzing the reaction, see (Additional file 1: Table S9) for locus tags. Dark gray arrows: nitrogen assimilation; light gray arrows: detoxification; white arrow: fortuitous reaction. Nas: assimilatory nitrate reductase; Nir: Nitrite reductase; Nif: nitrogenase; pmo: particulate methane monooxygenase; Hao: hydroxylamine oxidase; Nor: nitric oxide reductase; Black arrow with a question mark: NO oxidation, either nonenzymatic or catalyzed by a yet unidentified NO oxidaseBack to article page