Figure 1.

Metagenomic analysis of anammox reactor. (a) Community structure analysis based on ribosomal proteins identified in the metagenome. The genomes of unisolable Ca. B. pituitae, Ca. N. proteolyticus, and Ca. D. denitrificans were reconstructed in this study, although the genome of Ca. D. symbiosum is still divided into four contigs. Taxa representing <2% of the total were classified as ‘Other’. (b) Schematic representation of transformation steps of nitrogen compounds and the genes associated with each reaction step in the ABC. Dashed line indicates the predicted reaction.