1.4.1.16 A69R mutation to the correspondung residue of Symbiobacteium thermophilum DAPDH. Mutation improves the catalytic efficiencies toward 2-keto acids and does not affect the catalytic efficiency toward meso-DAP -, 762982 1.4.1.16 F146W site-directed mutagenesis, the mutant shows altered activity levels with meso-2,6-diaminoheptanedioate and pyruvate as substrates 724026 1.4.1.16 F146W/M152Q site-directed mutagenesis, the mutant shows altered activity levels with meso-2,6-diaminoheptanedioate and pyruvate as substrates 724026 1.4.1.16 H227C site-directed saturation mutagenesis, the mutant shows 15.1fold increased activity with phenylpyruvate compared to the wild-type enzyme 724034 1.4.1.16 H227I mutant accepts substrates D-2-phenylglycine and D-homophenylalanine 762879 1.4.1.16 H227V mutant shows high activity toward phenylpyruvic acid and 2-oxo-4-phenylbutyric acid 762879 1.4.1.16 H227V site-directed saturation mutagenesis, the mutant shows 35.1fold increased activity with phenylpyruvate compared to the wild-type enzyme 724034 1.4.1.16 K159R mutation decreases the kcat/KM value with meso-DAP, the catalytic efficiency toward pyruvic acid increases by 24% 763313 1.4.1.16 M152A the mutant shows increased activity towards meso-2,6-diaminoheptanedioate and reduced activity towards pyruvate compared to the wild type enzyme 742276 1.4.1.16 M152D inactive 742276