7.1.1.1 A246C reverse activity stronger affected than cyclic activity 658003 7.1.1.1 A253C reverse activity stronger affected than cyclic activity 658003 7.1.1.1 A348C mutation introduced into a cysteine-free mutant enzyme, mutant shows markedly reduced activity 392663 7.1.1.1 A390C mutation introduced into a cysteine-free mutant enzyme 392663 7.1.1.1 A398C the mutant with wild type activity shows increased ratios between the rates of the forward and reverse reactions, thus approaching that of the wild type enzyme 733772 7.1.1.1 A432C mutation in domain III, reverse reaction in the presence of domain I from R. rubrum, 150% higher reaction rate than wild-type domain III/R. rubrum domain I mixture 392667 7.1.1.1 A432C the mutant shows increased ratios between the rates of the forward and reverse reactions, thus approaching that of the wild type enzyme 733772 7.1.1.1 C292T/C339T/C395S/C397T/C435S cysteine of the alpha subunits replaced, similar activity as wild-type 392662 7.1.1.1 C292T/C339T/C395S/C397T/C435S/C147S/C260S all 7 cysteines of the enzyme, 5 localized in the alpha subunit and 2 in the beta subunit, are replaced, the cysteine-free mutant shows about 5fold more activity in the reduction of acetylpyridine adenine dinucleotide by NADH than wild-type, the cyclic reduction of acetylpyridine adenine dinucleotide by NADH via NADPH is 2-2.5fold more activ 392662 7.1.1.1 D135N mutation has no effect in binding affinity of either NAD+ or NADH 674550