Figure 1.

Structures and damage reactions of the seven B vitamins found in plants and of representative cofactors derived from them. The vitamin moieties are highlighted in blue. Note that folates generally have a short γ-linked poly-Glu chain attached to the glutamyl moiety. Color-coded arrows show the site and nature of spontaneous chemical or enzymatic damage reactions that each vitamin/cofactor can undergo in vivo. The damage reactions involved are documented in Table I.