3NAO

A DNA Crystal Designed to Contain Two Molecules per Asymmetric Unit Cell


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1SLOW COOLING7293125 mM magnesium acetate, 50 mM HEPES (pH 7.0) and 10% MPD in a 100 L sitting drop, equilibrated against a 0.5 ml reservoir of 1.4 M ammonium sulphate for two weeks. SLOW COOLING, temperature changed from 363K to 293K.
Crystal Properties
Matthews coefficientSolvent content
7.6783.97

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 105.345α = 90
b = 105.345β = 90
c = 183.938γ = 120
Symmetry
Space GroupH 3

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100 MSINGLE WAVELENGTH
21x-ray
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X6A1.1NSLSX6A
2SYNCHROTRONNSLS BEAMLINE X251.0NSLSX25

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
15.0334.1285.132373129

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENT5.0334.1180.173237274229084.940.19490.19070.2288
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]
37.2937.29263.2329
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d33.054
f_angle_d1.26
f_chiral_restr0.055
f_bond_d0.005
f_plane_restr0.003
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms
Nucleic Acid Atoms1710
Solvent Atoms
Heterogen Atoms

Software

Software
Software NamePurpose
ADSCdata collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing