6.2.1.13 D212betaE site-directed mutagenesis, comparison of the wild-type CD spectrum with the mutant CD spectrum, structure and reaction kinetics, overview. The mutant shows 2-4% of the wild-type activity, phosphorylation of the mutant is reduced 693061 6.2.1.13 D674A site-directed mutagenesis, the mutation does not eliminate the ability of ACD to be phosphorylated from either direction, although phosphorylation by ATP is reduced 744911 6.2.1.13 D674A the variant retains about 1% activity compared to wild type enzyme 744911 6.2.1.13 D674E the variant retains about 45% activity compared to wild type enzyme 744911 6.2.1.13 D674N the variant retains about 1% activity compared to wild type enzyme 744911 6.2.1.13 E213A site-directed mutagenesis, the mutant variant is not phosphorylated by acetyl-CoA and phosphate 744911 6.2.1.13 E213A the variant retains about 1% activity compared to wild type enzyme 744911 6.2.1.13 E213D the variant retains about 1% activity compared to wild type enzyme 744911 6.2.1.13 E213Q the variant retains about 1% activity compared to wild type enzyme 744911 6.2.1.13 E218A site-directed mutagenesis, the mutant variant is not phosphorylated by acetyl-CoA and phosphate 744911 6.2.1.13 E218alphaD site-directed mutagenesis, comparison of the wild-type CD spectrum with the mutant CD spectrum, structure and reaction kinetics, overview. The mutant shows 1-10% of the wild-type activity, phopshorylation of the mutant is reduced 693061 6.2.1.13 E218alphaQ site-directed mutagenesis, comparison of the wild-type CD spectrum with the mutant CD spectrum, structure and reaction kinetics, overview. Inactive mutant, phopshorylation of the mutant is reduced 693061 6.2.1.13 E218Dalpha 1-10% of wild-type activity 693061 6.2.1.13 G266S the Acs mutant does not cause growth arrest in contrast to the wild-type enzyme 716267 6.2.1.13 H252A site-directed mutagenesis, alteration of His252 in EhACD effectively eliminate overall enzymatic activity as well as phosphorylation in either direction of the reaction 744911 6.2.1.13 H252A the variant has no detectable activity in either direction of the reaction 744911 6.2.1.13 H257alphaD site-directed mutagenesis, comparison of the wild-type CD spectrum with the mutant CD spectrum, structure and reaction kinetics, overview. Inactive mutant, which is not phosphorylated at both the alpha- and beta-subunit 693061 6.2.1.13 H257Dalpha mutant shows no activity in either direction 693061 6.2.1.13 H533D the variant retains about 3% activity compared to wild type enzyme 744911 6.2.1.13 H533E the variant retains about 1% activity compared to wild type enzyme 744911 6.2.1.13 H533K the variant retains about 10% activity compared to wild type enzyme 744911 6.2.1.13 H533N the variant retains about 5% activity compared to wild type enzyme 744911 6.2.1.13 H533Q the variant retains about 5% activity compared to wild type enzyme 744911 6.2.1.13 H533R the variant retains about 10% activity compared to wild type enzyme 744911 6.2.1.13 H533R the variant retains less than 25% activity compared to wild type enzyme 744911 6.2.1.13 H71betaA site-directed mutagenesis, comparison of the wild-type CD spectrum with the mutant CD spectrum, structure and reaction kinetics, overview. Inactive mutant, which is impaired in phosphorylation of the beta subunit 693061 6.2.1.13 additional information gradual ACS gene silencing (49-93%) significantly decreases the acetate flux without affecting the levels of glycolytic metabolites and ATP in trophozoites. Amoebae lacking ACS activity are unable to reestablish the acetyl-CoA/CoA ratio after an oxidative stress challenge 744414