Figure 4. Specific activity of enzymes of the C₂ specific steps of the ethylmalonyl-CoA pathway and their regulation.

Enzymes: Pcc, propionyl-CoA carboxylase; Epi, ethylmalonyl-CoA/methylmalonyl-CoA epimerase; Mcm, methylmalonyl-CoA mutase; Mcl2, malyl-CoA thioesterase. The y axis is in nmol min⁻¹ mg⁻¹ protein. M, methanol grown cells; A, acetate grown cells; S, succinate grown cells.