Fig. 3.

Phylogenetic trees of NuoM and N subunits from a rarified subset of publically available genome data. Bootstrap support is marked on the branches with values ≥80% support are shown. a As observed in the NuoL tree, the NuoM genes from Clades 1, 2, and 3 remain separate and distinct. Within Clade 2 the NuoM2 genes appear to be polyphyletic, with separate origins for the Thaumarchaeal NuoM2 and the Deltaproteobacterial NuoM2. Operon diagrams illustrate which NuoM homolog is found in each position of the tree. b The NuoN genes also show the polyphyletic nature of the three 2M clades, as well and separation between Deltaproteobacteria and Thaumarchaeal members of Clade 3. High resolution NuoM and N trees, including those built from MUSCLE and MAFFT alignments are shown in Figures S11-30