1PLY

SODIUM IONS AND WATER MOLECULES IN THE STRUCTURE OF POLY D(A)(DOT)POLY D(T)

FIBER DIFFRACTION

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 18.56	α = 90
b = 22.68	β = 90
c = 32.4	γ = 99.9

Symmetry
Space Group	P 1 1 21

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
FIBER DIFFRACTION		3.2		102			0.23

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	320
Solvent Atoms	16
Heterogen Atoms	10

Software

Software
Software Name	Purpose
LALS	refinement

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.