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. 2018 Apr 25;13(4):e0196032. doi: 10.1371/journal.pone.0196032

Fig 9. Protein sequence read frequencies within the metagenomic record.

Fig 9

The data here represent open reading frames within the recovered genomic DNA that code for enzymes involved in the listed reactions. The following enzymes are involved in the reduction of nitrate (NO3-) and intermediate compounds to Ammonia (NH3) (NarG, NapA, NirK, NirS, NrfH, & NosZ) via denitrification.