Table 3.
ABTS oxidation activity of recombinant, wild type OxDC and OxDC mutants.
ABTS Oxidation Activity (U/mg) −Peroxidase | ABTS Oxidation Activity (U/mg) + Peroxidase | Specific Activity (U/mg) Decarboxylase Activity | |
---|---|---|---|
WT OxDC | 0.07 ± 0.01 | 0.12 ± 0.02 | 79 ± 2 |
R92K | 0.04 ± 0.01 | 0.08 ± 0.02 | 1.3 ± 0.4 |
E162D | 0.07 ± 0.01 | 0.12 ± 0.02 | 40 ± 3 |
E162Q | 0.6 ± 0.1 | 1.16 ± 0.03 | 0.4 ± 0.1 |
R270K | 0.02 ± 0.01 | 0.03 ± 0.01 | 2.4 ± 0.4 |
E333D | 0.04 ± 0.01 | 0.08 ± 0.01 | 4 ± 1 |
E333Q | 0.07 ± 0.01 | 0.12 ± 0.01 | 0.4 ± 0.1 |
R92K/R270K | 0.04 ± 0.03 | 0.07 ± 0.01 | 0.4 ± 0.1 |
E162Q/E333Q | 0.04 ± 0.03 | 0.05 ± 0.01 | 0.7 ± 0.1 |