1.1.1.274 A272G mutation increases Km and kcat compared to the wild-type enzyme 657308 1.1.1.274 F22Y isoenzyme A, similar kcat as wild-type 440307 1.1.1.274 F22Y mutation reduces Km and increases kcat by 50% compared to the wild-type enzyme 657308 1.1.1.274 F22Y/A272G increased activity compared to the wild-type enzyme, substrate inhibition at substrate concentrations above 17.5 mM 657308 1.1.1.274 F22Y/A272G isoenzyme A, reduced kcat for NADH 440311 1.1.1.274 F22Y/K232G/R235G/R238E/A272G isoenzyme A, increase in kcat for NADH 440311 1.1.1.274 F22Y/K232G/R235G/R238H/A272G isoenzyme A, increase in kcat for NADH 440311 1.1.1.274 F22Y/K232G/R235T/R238E/A272G isoenzyme A, 24fold increase in kcat for NADH 440311 1.1.1.274 F22Y/K232G/R238H/A272G isoenzyme A, increase in kcat forNADH 440311 1.1.1.274 F22Y/K232G/R238H/A272G mutant shows a higher activity with NADH compared to the wild-type enzyme 657308 1.1.1.274 F22Y/S232T/R235S/R238H/A272G isoenzyme A, increase in kcat for NADH 440311 1.1.1.274 K232 isoenzyme A, designed to improve the ability to use NADH as cofactor 440310 1.1.1.274 K232G/R238H isoenzyme A, increase in kcat for NADH 440311 1.1.1.274 K232Q isoenzyme A, designed to improve the ability to use NADH as cofactor 440310 1.1.1.274 K232S isoenzyme A, designed to improve the ability to use NADH as cofactor 440310 1.1.1.274 additional information construction of enzyme gene knockout mutant M-AKR, that shows decreased degradation activity with testosterone, estradiol, oestrone, and methyltestosterone compared to the wild-type enzyme. Compared to the wild-type, the mutation of the endogenous 2,5DKR gene results in lower degradation of estradiol and methyltestosterone but has no effct on degradation of estrone and testosterone -, 742259 1.1.1.274 additional information evaluation of the food grade expression systems NICE, Lactococcus lactis, and pSIP, Lactobacillus plantarum, for the production of 2,5-diketo-D-gluconic acid reductase from Corynebacterium glutamicum that also satisfies food safety requirements. Both systems are suitable for 2,5-DKG reductase expression, maximum production yields are obtained with Lactobacillus plantarum/pSIP609 by pH control at 6.5, overview 723915 1.1.1.274 additional information mutagenesis of 3 amino acids in the cofactor-binding pocket, mutations lead to higher activity with NADH as cofactor 440313 1.1.1.274 Q192R isoenzyme A, 2.5fold increase in kcat 440307 1.1.1.274 R235G isoenzyme A, designed to improve the ability to use NADH as cofactor 440310 1.1.1.274 R235T isoenzyme A, designed to improve the ability to use NADH as cofactor 440310 1.1.1.274 R238E isoenzyme A, designed to improve the ability to use NADH as cofactor 440310 1.1.1.274 R238H isoenzyme A, designed to improve the ability to use NADH as cofactor, 7fold higher activity with NADH than wild-type 440310