Acquisition of cofactors. The following metabolic intermediates that occur in other pathways are labeled in blue: chorismate (Fig. 4 and 8), 2-oxoglutarate (2-OG) (Fig. 4), pyruvate (Fig. 3, 4, 8, and 10), coenzyme A (CoA) (Fig. 3, 6, and 7), and menaquinone (Fig. 3).