FIG. 3.
Effect of increasing tyrosine concentrations on PDH activities of purified TyrAWT and TyrAfbr mutants. The specific PDH activities of eight purified TyrA proteins were measured at different tyrosine concentrations. —, TyrAWT; +, TyrAfbr-5; ▪, TyrAfbr-7; ▴, TyrAfbr-10; ⧫, TyrAfbr-13; ▾, TyrAfbr-15; , TyrAfbr-18; •, TyrAfbr-20.