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Unrooted phylogenetic tree of SSIII/SSIV/GlgA2 glycogen/starch synthases. Phylogenetic groups are color coded according to their taxonomy: green corresponds to the green algae and plants, red corresponds to Chlamydiales, blue corresponds to proteobacteria, and turquoise corresponds to cyanobacteria. Bootstrap values greater than 50 are indicated at nodes (1,000 bootstrap replicates).
