Structure-based phylogeny reveals relationships between the VASt domain and Bet v1-like domains. Structure-based neighbor joining tree including 16 VASt domains and 33 structural analogs identified by fold recognition searches. Representative proteins are labeled along branches and representative structures shown as ribbons colored from blue (N-terminus) to red (C-terminus). Terminal nodes are colored according to taxonomic distribution. Five structural groups (I to V) are highlighted, VASt domains from phylogenetic group 8 (G8) are also indicated. Bet v1, Betula verrucosa pollen antigen 1; PR-10, pathogenesis-related 10; PITP, phosphatidylinositol transfer protein; StAR, steroidogenic acute regulatory protein; StARD, STAR domain protein; START, StAR-related lipid-transfer; PYR1, pyrabactin resistance 1; PYL, PYR1-like; RCAR, Regulatory components of abscisic acid receptors.