181D

SEQUENCE-DEPENDENT MICROHETEROGENEITY OF Z-DNA: THE CRYSTAL AND MOLECULAR STRUCTURES OF D(CACGCG).D(CGCGTG) AND D(CGCACG).D(CGTGCG)


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.9
Details pH 6.90, VAPOR DIFFUSION, HANGING DROP

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 17.76 α = 90
b = 30.96 β = 90
c = 44.75 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 296
Diffraction Detector
Detector Diffraction Type Details Collection Date
DIFFRACTOMETER ENRAF-NONIUS CAD4 -- --
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- -- -- -- --

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym 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
1.6 -- -- -- -- -- -- -- 3912 -- -- --

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
-- 1.6 8.0 -- 2.0 -- 2625 -- 75.0 -- 0.199 -- -- --
RMS Deviations
Key Refinement Restraint Deviation
n_multtor_nbd 0.185
n_singtor_nbd 0.118
n_chiral_restr 0.034
n_plane_restr 0.006
n_phos_bond_angle_d 0.076
n_phos_bond_d 0.127
n_sugar_bond_angle_d 0.041
n_sugar_bond_it 8.19
n_sugar_angle_it 9.4
n_phos_bond_it 11.02
n_phos_angle_it 11.83
n_sugar_bond_d 0.014
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 0
Nucleic Acid Atoms 240
Heterogen Atoms 0
Solvent Atoms 42

Software

Computing
Computing Package Purpose
NUCLSQ Structure Refinement
Software
Software Name Purpose
NUCLSQ refinement