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. 2020 Sep 26;88(8):662–673. doi: 10.1007/s00239-020-09965-x

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© The Author(s) 2020

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Fig. 4 — Schematic phylogenetic tree from MUSCLE alignment. aLRT-SH over 0.5 are shown, with branches below 0.5 being collapsed. N1–N3 refer to the three nodes discussed in the manuscript. Proteins that contain the “canonical” tryptophan triad are represented by blue branches. Proteins with a WWWW tetrad are represented by red branches and with a YWWW tetrad green. The canonical triad is found widely through the CPD Class I, Plant Cry and Cry-DASH subfamilies. Tetrads are found mainly in the (6–4) Photolyase/Animal Cry subfamily. The full tree is in Supplementary Figure S4 (Color figure online)