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Regulation of some enzymes possibly relevant for autotrophic CO2 fixation by Metallosphaera sedula, as determined by activity measurements in cell extracts at 65°C
| Growth conditions | Sp act (nmol min−1 mg−1)
|
||
|---|---|---|---|
| 3-Hydroxy-propionate reduction | 3-Hydroxypropionyl-CoA synthetase | Malate dehydrogenase (control) | |
| Autotrophic | 23 | 91 | 1,400 |
| Heterotrophic | 8.5 | 12 | 3,200 |
