From: High external pH enables more efficient secretion of alkaline α-amylase AmyK38 by Bacillus subtilis
Strain | Plasmid | Na2CO3a | α-amylase activity(kU l-1)b |
---|---|---|---|
168 | pHYK38 | - | 2.9 ± 0.3 |
168ΔdltB | pHYK38 | - | 7.0 ± 0.3 |
MGB874 | pHYK38 | - | 0.10 ± 0.01 |
874ΔdltB | pHYK38 | - | 0.27 ± 0.02 |
168 | pHYK38 | + | 14.3 ± 0.2 |
168ΔdltB | pHYK38 | + | 14.8 ± 0.4 |
MGB874 | pHYK38 | + | 20.8 ± 0.8 |
874ΔdltB | pHYK38 | + | 20.1 ± 0.2 |