1D9R

CRYSTAL STRUCTURE OF DNA SHEARED TANDEM G-A BASE PAIRS


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.5298MPD, COBALT HEXAMMINE, MGCL2, TRIS, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.141

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 22.711α = 90
b = 67.216β = 90
c = 72.504γ = 90
Symmetry
Space GroupC 2 2 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray123CCDCUSTOM-MADE1998-08-16MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 19-IDAPS19-ID

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (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
11.51099.70.05533.710.58923892329.8
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.51.561000.3778.1

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMAD PHASING BY BROMINESA POSTERIORI1.5108923892343799.90.2340.2340.2340.278RANDOM
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
s_similar_adp_cmpnt0.072
s_from_restr_planes0.052
s_angle_d0.024
s_bond_d0.009
s_anti_bump_dis_restr0.003
s_similar_dist
s_zero_chiral_vol
s_non_zero_chiral_vol
s_rigid_bond_adp_cmpnt
s_approx_iso_adps
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms
Nucleic Acid Atoms412
Solvent Atoms133
Heterogen Atoms9

Software

Software
Software NamePurpose
SHELXL-97refinement
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling
CNSphasing