Figure 5. eNOR domain tree
A phylogenetic tree of homologs to the nitric oxide reductase from SURF MAG 42 reveals an expanded diversity of putative eNOR homologs in not only Archaea and Chloroflexi, but also Proteobacteria and other diverse phyla. Putative eNOR sequences (red tips) have the characteristic Glu-323 in the alignment; outgroup sequences (blue tips) have Tyr-323 (oxygen reductase superfamily) or other substitutions. Support values for selected bipartitions are labeled (aLRT/bb). Support for other nodes is indicated with the following color scheme: Strong support with both values ≥ 90 (black); weak support with both values ≤ 50 (white); intermediate support with one or both values between 50 and 90 (grey); conflicting support, with one value ≤ 50 and the other ≥ 90 (grey).