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Induction of the mel operon by lactose
| Genotype + plasmid | Medium supplement (0.4%) | α-Galactosidase units |
|---|---|---|
| lacZ + pBR322 | None | 0.1743 ± 0.0023 |
| lacZ + pBR322 | Melibiose | 369 ± 12 |
| lacZ + pBR322 | Lactose | 1.47 ± 0.20 |
| lacZ + pBR322-Oid | Lactose | 48.17 ± 0.56 |
| lacZ + pUC19-Δα | Lactose | 55.7 ± 2.9 |
| WT + pBR322 | Lactose | 2.483 ± 0.084 |
