Substrate | Specific activity (U mg-1) | Relative activity b (%) |
---|---|---|
Wild type | Â | Â |
FA | 260 ± 9.0 | 100 |
FA + L-cysteine a | 759 ± 156 | 292 |
PCA | 259 ± 4.0 | 100 |
PCA + L-cysteine | 257 ± 3.3 | 99 |
CA | 31.7 ± 2.8 | 12 |
CA + L-cysteine | 35.9 ± 3.5 | 14 |
M57L | Â | Â |
FA | 20.1 ± 0.3 | 100 |
FA + L-cysteine a | 66.7 ± 8.5 | 332 |
PCA | 20.5 ± 0.3 | 100 |
PCA + L-cysteine | 26.0 ± 2.7 | 127 |
CA | < 2.6 | < 13 |
CA + L-cysteine | ND c | Â |