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| RNAP | tR2 (%) | Rel. |
|---|---|---|
| WT | 50 ± 1 | 1 |
| D446A | 34 ± 1 | 0.68 |
| E546A | 41 ± 3 | 0.82 |
| W183A | 53 ± 6 | 1.1 |
| Δ443–451 | 52 ± 5 | 1.0 |
| Δ533–546 | 69 ± 3 | 1.4 |
The last column shows termination efficiencies relative to wild-type RNAP.
