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