197D

ORTHORHOMBIC CRYSTAL STRUCTURE OF THE A-DNA OCTAMER D(GTACGTAC). COMPARISON WITH THE TETRAGONAL STRUCTURE


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6pH 6.00, VAPOR DIFFUSION, SITTING DROP
Crystal Properties
Matthews coefficientSolvent content
2.244.02

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 38.605α = 90
b = 50.824β = 90
c = 21.74γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-rayAREA DETECTORSIEMENS-NICOLET
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODESIEMENS

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.194465

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTION2.1910415160.161
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
KeyRefinement Restraint Deviation
n_multtor_nbd0.15
n_singtor_nbd0.113
n_phos_bond_d0.058
n_phos_bond_angle_d0.048
n_sugar_bond_angle_d0.043
n_plane_restr0.03
n_sugar_bond_d0.017
n_bond_d
n_angle_d
n_planar_d
RMS Deviations
KeyRefinement Restraint Deviation
n_multtor_nbd0.15
n_singtor_nbd0.113
n_phos_bond_d0.058
n_phos_bond_angle_d0.048
n_sugar_bond_angle_d0.043
n_plane_restr0.03
n_sugar_bond_d0.017
n_bond_d
n_angle_d
n_planar_d
n_hb_or_metal_coord
n_sugar_bond_it
n_sugar_angle_it
n_phos_bond_it
n_phos_angle_it
n_bond_angle_restr
n_dihedral_angle_restr
n_impr_tor
n_chiral_restr
n_xhyhbond_nbd
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms
Nucleic Acid Atoms322
Solvent Atoms66
Heterogen Atoms

Software

Software
Software NamePurpose
NUCLSQrefinement