Table 1.
Summary of crystallographic and refinement data.
| Cell Parameters | RT-AATTa | RT-AATT-RT29 | RT-ATTC | RT-ATTC-RT29 |
|---|---|---|---|---|
| Cell constants (Å) | a=54.93 | a=54.55 | a=54.95 | a=54.75 |
| b=145.75 | b=145.65 | b=145.65 | b=145.45 | |
| c=46.86 | c=46.84 | c=46.81 | c=46.86 | |
| Space Group | P21212 | P21212 | P21212 | P21212 |
| Statistics | ||||
| Maximum Resolution | 1.8 Å | 2.05 Å | 1.95 Å | 1.8 Å |
| Reflections (unique) | 35,445 | 23,358 | 28,321 | 35,649 |
| (total) | 169,451 | 204,634 | 146,298 | 160,158 |
| Completeness (%) | 98.9 (97.6) | 96.2 (94.7) | 99.6 (99.6) | 98.8 (92.0) |
| Rsymb (%) | 5.2 (32.3) | 9.1 (56.5) | 6.6 (50.2) | 3.5 (29.2) |
| I/s | 19.7 (4.4) | 22.9 (4.1) | 22.1 (3.1) | 37.1 (3.4) |
| Refinement | ||||
| Resolution range (Å) | 50-1.8 | 50-2.05 | 50–1.95 | 50–1.8 |
| Number of Waters | 237 | 226 | 216 | 226 |
| Average B-factor (Å2): | ||||
| Protein | 29.2 | 30.6 | 38.2 | 34.0 |
| DNA | 56.5 | 48.3 | 60.2 | 52.3 |
| Water | 31.9 | 32.9 | 37.1 | 35.0 |
| RT29 | N/A | 73.1 | N/A | 80.0 |
| Rvaluec (%) | 22.7 | 22.8 | 23.7 | 23.4 |
| Rfree (%) | 26.4 | 28.1 | 25.5 | 26.7 |
a
The RT-AATT structure was reported previously.17 Data in ( ) are for highest resolution shell.
b
Rsym= __i|Ii-<I>|/_<I> where I is the integrated intensity of a reflection.
c
Rvalue=_hkl||Fobs − kFcalc|/_hkl|Fobs|. 5% of all reflections were omitted from refinement and Rfree is the same statistic calculated for these reflections.