Figure 3.

Reported products of diterpene synthases from the Lamiaceae. Blue numbers, compounds experimentally verified to be products of new enzymes from this study. Red circle, compounds that previously were inaccessible biosynthetically or were accessible only as minor components of multiproduct enzymes but are the single product of a newly characterized enzyme. At the center is GGPP, a precursor to all of these diterpenes. Inner ring, class II products; outer ring, class I products derived from the compound in the connected segment of the inner ring.