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. Author manuscript; available in PMC: 2014 Mar 30.
Published in final edited form as: Nat Rev Microbiol. 2013 Mar;11(3):205–212. doi: 10.1038/nrmicro2970

Figure 2. Distribution of terminal oxidase genes in shotgun metagenomes.

Figure 2

An average genome is an estimate based on the mean of the normalized gene lengths of four bacterial housekeeping genes (the RNA polymerase genes rpoA, rpoB and rpoC, and the recombinase gene recA) from each metagenome. Metagenomes from various environments were included, for comparison. See Supplementary information S2,S3 (box; table) for a detailed description of this analysis. HCOs, haem–copper oxidases.