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A unique set of Gα subunits is present in Cladonia. The protein phylogeny (PhyML, 100 bootstraps) of the eight C. grayi Gα subunits clusters into three major MAG A, MAG B, and MAG C clades (highlighted). The unique MAG C paralogs are shown on the bottom. The green branches correspond to nodes with bootstrap support ≥67%. The C. grayi proteins are labeled brown. Bar indicates amino acid substitutions/site. See also Additional file 8
