1D81

THE CONFORMATIONAL VARIABILITY OF AN ADENOSINE. INOSINE BASE-PAIR IN A SYNTHETIC DNA DODECAMER

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	277	pH 6.50, VAPOR DIFFUSION, SITTING DROP, temperature 277.00K

Crystal Properties
Matthews coefficient	Solvent content
2.3	46.56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 25.16	α = 90
b = 41.06	β = 90
c = 65.45	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	277	DIFFRACTOMETER	SIEMENS AED2

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.5			0.09			4866	2462	1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION		2.5	7	2	2004			0.158

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]

RMS Deviations
Key	Refinement Restraint Deviation
n_sugar_bond_angle_d	0.028
n_phos_bond_angle_d	0.025
n_sugar_bond_d	0.011
n_phos_bond_d	0.011
n_bond_d
n_angle_d
n_planar_d
n_hb_or_metal_coord
n_sugar_bond_it
n_sugar_angle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	488
Solvent Atoms	71
Heterogen Atoms

Software

Software
Software Name	Purpose
NUCLSQ	refinement

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.