6ZX8

Racemic compound of RNA duplexes.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	293	0.2 M zinc acetate, 0.1 M cacodylate buffer, 18% polyethylene glycol 8000.

Crystal Properties
Matthews coefficient	Solvent content
1.95	36.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 21.018	α = 104.931
b = 25.804	β = 96.588
c = 38.414	γ = 92.107

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M		2019-02-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1	1.283	BESSY	14.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Rrim I (All)	CC (Half)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.98	37	81.4	0.099	0.14	0.985	4.31	1.9		8769

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.98	2.1	69.2		0.479	0.677	0.782

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	6ZQ9	1.981	36.809	4678	244	86.984	0.177	0.1725	0.2592	26.045

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
-0.626	0.925	-0.218	1.807	-0.294	-0.875

RMS Deviations
Key	Refinement Restraint Deviation
r_lrange_it	4.752
r_lrange_other	4.27
r_scangle_it	2.814
r_scangle_other	2.813
r_angle_other_deg	2.266
r_scbond_other	2.099
r_scbond_it	2.097
r_angle_refined_deg	1.657
r_xyhbond_nbd_refined	0.286
r_symmetry_nbd_other	0.277
r_nbtor_refined	0.254
r_symmetry_xyhbond_nbd_refined	0.231
r_metal_ion_refined	0.218
r_nbd_other	0.21
r_nbd_refined	0.19
r_chiral_restr	0.11
r_symmetry_nbd_refined	0.105
r_symmetry_nbtor_other	0.092
r_symmetry_xyhbond_nbd_other	0.075
r_gen_planes_refined	0.018
r_bond_refined_d	0.009
r_bond_other_d	0.003
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	676
Solvent Atoms	114
Heterogen Atoms	7

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing