TABLE 4.
RubisCO-specific activities and doubling times for R. sphaeroides strain 87 complemented with wild-type and truncated CbbR mutant proteinsa
| Strain | Photoheterotrophic activity |
Photoautotrophic activity |
||
|---|---|---|---|---|
| RubisCO (nmol product/mg of protein) | Doubling time (h) | RubisCO (nmol product/mg of protein) | Doubling time (h) | |
| HR | 21 | 5.5 | 280 | 20.2 |
| 87/CbbR(wt) | 23 | 7.1 | 245 | 18.5 |
| 87 | 5 | 10.5 | 52 | 27.7 |
| 87/CbbR(trunc) | 4 | 11.9 | 27 | 34.5 |
a
Enzyme activities are expressed in nmol product per minute per milligram of protein in lysates. Values are the averages of results of three independent determinations with standard deviations not exceeding 10%. Doubling times are the averages of results of three independent determinations with standard deviations not exceeding 12%.