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Phylogeny of AroK/L. The AroK/L phylogeny was calculated from an amino acid alignment of 88 sequences and 123 characters. The node supporting monophyly of arom-possessing taxa is boxed. The node showing separation of the Plantae away from the remaining eukaryotes and grouping with the cyanobacteria is circled. Note also that the HTH_XRE domain (Helix-turn-helix motif pfam01381) is fused to AroK in some proteobacteria.
