1.2.1.48 C241S site-directed mutagenesis, inactive active-site mutant 743336 1.2.1.48 C244S the mutant shows about 90% reduction in catalytic efficiency with benzaldehyde and no activity with 4,4'-diapolycopendial compared to the wild type enzyme 762884 1.2.1.48 D245N NAD+ cosubstrate binding is occuring but catalytic reduction is diminished 693389 1.2.1.48 E207Q site-directed mutagenesis, inactive mutant 743336 1.2.1.48 E331Q site-directed mutagenesis, inactive mutant 743336 1.2.1.48 F456A the mutant shows about 50% reduction in catalytic efficiency with 4,4'-diapolycopendial compared to the wild type enzyme 762884 1.2.1.48 F456A/F457A the mutant shows about 15% reduction in catalytic efficiency with benzaldehyde and no activity with 4,4'-diapolycopendial compared to the wild type enzyme 762884 1.2.1.48 F457A the mutant shows about 40% reduction in catalytic efficiency with 4,4'-diapolycopendial compared to the wild type enzyme 762884 1.2.1.48 G185A disruption of NAD+ binding/utilisation 693389 1.2.1.48 G412R disruption of interaction of side-chains with substrate 693389 1.2.1.48 H411Y disruption of the key abstraction of the hydroxyl hydrogen 693389 1.2.1.48 K449E the mutant shows slight reduction in catalytic efficiency with benzaldehyde and no activity with 4,4'-diapolycopendial compared to the wild type enzyme 762884 1.2.1.48 N112A site-directed mutagenesis, inactive mutant 743336 1.2.1.48 Q445R substitution in the recombinant protein 693389 1.2.1.48 T184M disruption of NAD+ binding/utilisation 693389 1.2.1.48 T184R disruption of NAD+ binding/utilisation 693389 1.2.1.48 Y113F site-directed mutagenesis, the mutant activity is unaltered compared to wild-type 743336 1.2.1.48 Y410F site-directed mutagenesis, the mutant shows normal Vmax/KM levels against octanal and dodecanal and a somewhat reduced but still considerable catalytic capacity for hexadecanal 743336 1.2.1.48 Y92A the mutant shows slight reduction in catalytic efficiency with benzaldehyde and no activity with 4,4'-diapolycopendial compared to the wild type enzyme 762884