Table 2.

Selected Crystal Data and Refinement Statistics

	DDDZ10	DDD2+Z10
(A) Crystal Data
unit cell (α, β, and γ angles are 90°)
a (Å)	24.19	24.86
b (Å)	40.33	41.06
c (Å)	65.69	66.62
space group	P212121	P212121
(B) Data Collection
temperature of data collection (°C)	-160.0	-160.0
total no. of reflections	164005	359861
no. of independent reflections	9994	9574
completeness (%)	96.6	93.4
maximum resolution (Å)	1.42	1.42
(C) Structure Refinement
resolution range (Å)	34.36-1.60	34.94-1.60
no. of reflections used in refinement	7824	8368
no. of reflections used in the test set	471	497
rmsd of bonds from ideal (Å)	0.006	0.006
rmsd of angles from ideal (deg)	1.6	1.6
no. of DNA atoms	486	492
no. of water molecules	110	95
R-factor(test set)a,b	0.262	0.233
R-factor(work set)b	0.179	0.178
R-factor(work+test)b	0.186	0.180

^aCalculated using 6% of the reflection data that were not used in the refinement.

^bR-factor = Σ_hkl|F(hkl)_o - F(hkl)_c|/Σ_hklF(hkl)_o.