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. 2016 Jan 19;17:68. doi: 10.1186/s12864-016-2382-2

Fig. 4.

Fig. 4

Proposed hypothetical pathways for anaerobic nitrogen reduction in B. licheniformis. Schematic representation of enzymes are given in grey, transporters in black. Diffusion of gaseous NO through cytoplasmic membrane is indicated by the dashed arrow. Soluble Hmp can be located in the cytoplasm and periplasm