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Glutamine synthetase activity of S. thermophilus CNRZ385 and GS200
| Strain | Growth medium | Glutamine synthetase activity (U mg protein−1)a
|
|
|---|---|---|---|
| Measurement in the absence of methionine sulfoximine | Measurement in the presence of methionine sulfoximine | ||
| CNRZ385 | M17 | 0.0190 ± 0.0018 | <0.0005 |
| M17 + 0.25 g liter−1 glutamine | 0.0240 ± 0.0026 | <0.0005 | |
| GS200 | M17 | ND | ND |
| M17 + 0.25 g liter−1 glutamine | <0.0005 | <0.0005 | |
Means of three measurements ± standard deviations. ND, not determined.
