Table 3. LDH specific activity of the A. niger mldhA transformants.
Strain | Activity (U) a | Specific activity (U/mg protein) | mldhA copy number |
---|---|---|---|
D5 | 360.5 ± 35.7 | 171.7 ± 15.0 | 4 |
C12 | 302.7 ± 14.4 | 137.0 ± 14.0 | 11 |
C2 | 180.2 ± 31.2 | 81.3 ± 6.5 | 13 |
C7 | 86.7 ± 16.8 | 40.0 ± 2.0 | 1 |
C16 | 18.8 ± 6.9 | 8.3 ± 3.1 | 1 |
C3 | 2.0 ± 1.1 | 0.9 ± 0.7 | 0 |
Parent | 4.8 ± 4.6 | 2.3 ± 1.5 | 0 |
a LDH was assayed in the direction of lactate oxidation.