TABLE 3.
Effect of rhamnose and glucose on β-galactosidase fusions to genes in the rhamnose transport operon
| Strain | Relevant genotype | Glucosea | Rhamnose | Inductionb |
|---|---|---|---|---|
| Rlt117 | rhaR25::Tn5B20 | 2,824 (185)c | 10,451 (751)d | 3.7 |
| Rlt128 | rhaP36::Tn5B20 | 24 (1) | 660 (46)e | 28 |
| Rlt151 | rhaQ38::Tn5B20 | 33 (4) | 424 (41) | 13 |
| Rlt131 | rhaK40::Tn5B20 | 2 (1) | 5 (0) | 2 |
| Rlt144 | rhaK50::Tn5B20 | 2 (1) | 11 (2)e | 5 |
| Rlt146 | rhaK52::Tn5B20 | 4 (2) | 12 (1)e | 3 |
a
The values given represent β-galactosidase activity expressed in Miller units following overnight growth in defined media with either glucose-glycerol or rhamnose-glycerol as carbon sources. Values are the average of at least four independent replicates; values in parentheses represent standard error.
b
Ratio of rhamnose values to the glucose values.
c
Value represents seven independent replicates.
d
Value represents six independent replicates.
e
Value represents three independent replicates.