TABLE 1.
Data and refinement statistics
| Parameter | Total | Outer shell |
|---|---|---|
| Native diffraction data | ||
| Resolution (Å) | 30.3-2.0 | 2.07-2.00 |
| Rmergea (%) | 6.4 | 30.4 |
| I/σ(I) | 20.7 | 3.8 |
| Redundancy | 5.6 | 3.6 |
| Refinement | ||
| No. of reflections | (20.0-2.0 Å) | |
| Work | 16,841 | |
| Free FLAGb | 811 | |
| Modeled regions | Amino acids 49-124 in molecule A | |
| Amino acids 49-126 in molecule B | ||
| DNA 1-21 in chain C and 1-21 in chain D 4 zinc atoms | ||
| 157 solvent atoms | ||
| R factor (%) | 21.3 | |
| Rfree (%) | 25.1 | |
| <B> for all atoms (Å2) | 29.37 | |
| Root mean square deviations | ||
| Bond lengths (Å) | 0.005 | |
| Bond angles (degrees) | 1.031 |
a
Rmerge = ∑h ∑i|I(h)i - <I(h)>|/∑h ∑i I(h)i, where I(h) is the intensity of reflection h, ∑h is the sum over all reflections, and ∑i is the sum over i measurements of reflection h.
b
5% of the reflection data excluded from refinement.