6QT4

Radiation damage study on a 16mer DNA segment, structure at 17.7 MGy dose


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP8.62922 microliter 1.5 mM DNA solution (5mM HEPES pH 6.6) plus 2 microliter 10 mM HEPES pH 6.6 plus 4 microliter reservoir solution, against a reservoir of 1 ml 34% PEG200, 600 mM CaCl2 and 10 mM HEPES pH 8.6.
Crystal Properties
Matthews coefficientSolvent content
2.1743.44

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 36.926α = 90
b = 36.926β = 90
c = 162.362γ = 120
Symmetry
Space GroupH 3 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS3 6M2018-10-22MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I240.9686DiamondI24

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)CC (Half)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
11.831.4192.20.0810.0990.0560.9953.533898
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.81.8556.74.4635.4473.0660.2372.5

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONFOURIER SYNTHESISTHROUGHOUT6QT11.831.4370818791.30.23520.23160.3104RANDOM55.095
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]
0.880.440.88-2.86
RMS Deviations
KeyRefinement Restraint Deviation
r_angle_refined_deg1.71
r_angle_other_deg1.661
r_chiral_restr0.088
r_gen_planes_refined0.021
r_bond_refined_d0.008
r_gen_planes_other0.003
r_bond_other_d0.002
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms
Nucleic Acid Atoms325
Solvent Atoms40
Heterogen Atoms6

Software

Software
Software NamePurpose
Aimlessdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
DIALSdata reduction
MOLREPphasing