1K2L

STRUCTURAL CHARACTERIZATION OF BISINTERCALATION IN HIGHER-ORDER DNA AT A JUNCTION-LIKE QUADRUPLEX


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6.5285Sodium cacodylate buffer, magnesium acetate, cobalt chloride, spermine, MPD, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 285.0K
Crystal Properties
Matthews coefficientSolvent content
2.2841.47

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 29.507α = 90
b = 53.738β = 90
c = 40.061γ = 90
Symmetry
Space GroupC 2 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMARRESEARCH1996-11-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONEMBL/DESY, HAMBURG BEAMLINE X310.979EMBL/DESY, HAMBURGX31

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
12.2813.588.060.07111.57206320632-3
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
2.282.3693.8

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)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 DIFFRACTIONMOLECULAR REPLACEMENTFREE R2.49419711217920.32680.24520.2390.3091RANDOM
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]
Coordinate Error
Structure Solution MethodRefinement High ResolutionRefinement Low Resolution
264
RMS Deviations
KeyRefinement Restraint Deviation
s_anti_bump_dis_restr0.053
s_bond_d0.026
s_similar_dist0.016
s_similar_adp_cmpnt0.009
s_from_restr_planes0.0001
s_angle_d
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 Atoms224
Solvent Atoms9
Heterogen Atoms36

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SHELXLrefinement
SHELXL-97refinement