6XEK
Self-assembly of a 3D DNA crystal lattice (4x5 junction version) containing the J14 immobile Holliday junction
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 298 | 0.5 mL of 0.05 M Cacodylate pH 6.0 with 10 mM MgCl2, 2.5 mM spermine, 5 mM CaCl2, and 10% Isopropanol was added to the reservoir with 2 uL added to the drop containing 4 uL of DNA stock |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.33 | 63.01 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 68.908 | α = 90 |
b = 68.908 | β = 90 |
c = 62.094 | γ = 120 |
Symmetry | |
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Space Group | P 32 2 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | PIXEL | DECTRIS PILATUS3 6M | 2018-03-15 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 19-ID | 0.92 | APS | 19-ID |
Data Collection
Overall | |||||||||||||||||||
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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) | Redundancy | Number Reflections (All) | Number Reflections (Observed) | Observed Criterion Sigma (F) | Observed Criterion Sigma (I) | B (Isotropic) From Wilson Plot | |||||
1 | 2.85 | 59.68 | 99.8 | 0.076 | 0.079 | 0.019 | 0.917 | 8.7 | 19.1 | 4213 |
Highest Resolution Shell | |||||||||||||||||||
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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) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 2.85 | 2.9 | 100 | 0.746 | 0.766 | 0.171 | 0.916 | 19.4 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 6x8c | 2.85 | 50 | 3969 | 227 | 99.64 | 0.2422 | 0.241 | 0.2627 | RANDOM | 87.476 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
-0.59 | -0.29 | -0.59 | 1.9 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_angle_other_deg | 1.963 |
r_angle_refined_deg | 1.843 |
r_chiral_restr | 0.09 |
r_gen_planes_refined | 0.016 |
r_bond_refined_d | 0.011 |
r_bond_other_d | 0.005 |
r_gen_planes_other | 0.003 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | |
Nucleic Acid Atoms | 855 |
Solvent Atoms | |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
PDB_EXTRACT | data extraction |
PHASER | phasing |