α-Galactosidase Actvities in Cell Lysates of Different Strains Grown on C + Y Medium Supplemented with the Indicated Carbon Source
| Strain[i] | Carbon source | α-Galactosidase activity (U/mg protein)[ii] |
| sp. R6x (wild type) | glucose | 0.7 ± 0.1 |
| glucose/sucrose | 0.4 ± 0.1 | |
| glucose/raffinose | 200 ± 40 | |
| sucrose/raffinose | 0.7 ± 0.2 | |
| sp. R6x (ΔptsII) | glucose | 0.8 ± 0.1 |
| glucose/raffinose | 220 ± 38 | |
| sucrose/raffinose | 203 ± 45 | |
| sp. R6x (ΔccpA) | glucose | 0.7 ± 0.1 |
| glucose/raffinose | 238 ± 44 | |
| sucrose/raffinose | 1.0 ± 0.4 | |
| sp. R6x (ΔrafR) | glucose | 0.4 ± 0.1 |
| glucose/raffinose | 34 ± 8 | |
| sp. R6x (ΔrafS) | glucose | 0.8 ± 0.1 |
| glucose/raffinose | 444 ± 92 | |
| E. coli | L broth | 0 |
| E. coli pR326aga | L broth | 800 ± 120 |
| E. coli rafR/aga | L broth | 4600 ± 410 |
[i] (sp.) S. pneumoniae.
[ii] The activities are expressed in units (nmoles ofp-nitrophenol produced per min of incubation at room temperature) per mg protein with their s.d. Shown is the mean of three experiments.