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Potential benefits of compartmentalization (with gray circles representing intracellular compartments). (A) Concentration of enzymes. (B) Increased concentration of intermediates through a selectively permeable diffusion barrier. (C) Maintenance of a chemical microenvironment essential for enzymatic function. (D) Protection of enzymes from molecules from deactivators or competitors. (E) Isolation of toxic enzymes of intermediates from the cell.
