Table 1.

Summary of data collection and refinement statistics

Measurement	Value
Space group	R3
Unit cell dimensions    a, b, c Å	70.34   70.34   68.24
α, β, γ (°)	90  90   120
Resolution range, Å	22.75 – 1.95
Total number of reflections	98787
Number of unique reflections	8621
Average redundancy	5.5
% completeness	99.3 (98.9)
I/σI	37.0 (2.2)
Rmergea	0.068 (0.60)
Average B-factors [atoms]
nucleotides	54.58 [744]
solvent	60.53 [44]
Rfreeb	0.266
Rworkb	0.208

Values in parentheses represent highest resolution shell

^a$R_{\mathit{\text{merge}}}=\frac{{\displaystyle \sum \left|I-\langle I\rangle \right|}}{{\displaystyle \sum \langle I\rangle }}$ where I is the observed intensity and <I> is the average of intensities obtained from multiple observations of symmetry-related reflections.

^b$R_{factor}=\frac{{\displaystyle \sum \left|\left|F_0\right|-\left|F_c\right|\right|}}{{\displaystyle \sum \left|F_0\right|}}$ where F_o and F_c are the observed and calculated structure amplitudes, respectively.