Maximum likelihood phylogeny of all selected representatives for the serine incorporator family. (Phylogenetic analysis: PhyML with the substitution model WAG, a discrete gamma model with 8 categories and the shape parameter estimated from the dataset (), branch support values are calculated with aLRT non-parametric branch support based on a Shimodaira-Hasegawa-like procedure). Topology: Duplication nodes are significantly supported, with the exception of SERC1_Viridiplantae/SERC2_Viridiplantae. Gene/species tree reconciliation for speciation nodes shows only minor deviations for branches with no significant statistical support.