5.1.3.33 E151G in the absence of 1,10-phenanthroline, the activity of the single mutant variant is similar to that of the wild type -, 729590 5.1.3.33 E76G in the absence of 1,10-phenanthroline, the activity of the single mutant variant is similar to that of the wild type -, 729590 5.1.3.33 E76G/E151G inactive mutant enzyme 729590 5.1.3.33 E76G/H99G inactive mutant enzyme 729590 5.1.3.33 H14G in the absence of 1,10-phenanthroline, the activity of the single mutant variant is similar to that of the wild type -, 729590 5.1.3.33 H14G/E151G inactive mutant enzyme 729590 5.1.3.33 H14G/E76G inactive mutant enzyme -, 729590 5.1.3.33 H14G/H99G inactive mutant enzyme 729590 5.1.3.33 H99G in the absence of 1,10-phenanthroline, the activity of the single mutant variant is similar to that of the wild type -, 729590 5.1.3.33 H99G/E151G inactive mutant enzyme 729590