1.1.1.193 D33A the mutant shows 0.1-0.6% activity compared to the wild type enzyme 760492 1.1.1.193 D33K inactive 760492 1.1.1.193 D33N inactive 760492 1.1.1.193 D57N the mutant shows 0.1-0.6% activity compared to the wild type enzyme 760492 1.1.1.193 E156Q inactive 760492 1.1.1.193 K151A inactive 760492 1.1.1.193 K151D inactive 760492 1.1.1.193 K151E inactive 760492 1.1.1.193 additional information a ribG mutant can be rescued by expression of ribB, overview -, 684754 1.1.1.193 N9A the mutant shows 0.1-0.6% activity compared to the wild type enzyme 760492 1.1.1.193 R91A the mutation eliminates the endogenous NADPH binding and switches preference of the enzyme to NADH 760492 1.1.1.193 S29A the mutant shows 0.1-0.6% activity compared to the wild type enzyme 760492 1.1.1.193 S88E the mutation eliminates the endogenous NADPH binding and switches preference of the enzyme to NADH 760492