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Global GPx tree of representative species from main taxonomic groups. Glutathione peroxidase protein sequences from major phyla of bacteria, fungi, plants, and animals were retrieved and used to reconstruct a phylogenetic tree, using Bayesian inference. A total of 124 sequences were used, and the tree was built on BEAST software, available at CIPRES platform. The posterior probabilities are discriminated according to the figure legend; only values above 0.9 are indicated.
