Figure 2.

Predictions of vitamin pathway capacity in arthropod endosymbionts and nonsymbiont taxonomic relatives. Red: pathways predicted as complete. Orange: pathway assumed complete. Cyan: predicted as a partial pathway. Dark blue: no predicted synthetic capacity. *Prediction includes contribution of a substitute enzyme. **Pathway has been confirmed as functional in vitro. (A) Left side: endosymbiont capacity for de novo biosynthesis of conventional vitamin forms. Right side: capacity for de novo biosynthesis of active vitamin forms. (B) Overall synthetic capacity of each taxonomic group for conventional vs. active vitamin biosynthesis. (C) Left side: nonsymbiont capacity for de novo biosynthesis of conventional vitamin forms. Right side: capacity for de novo biosynthesis of active vitamin forms. (D) Summary: synthetic capacity of each taxonomic group for conventional vs. active vitamin biosynthesis.