4WO3
THE SECOND C-KIT DNA QUADRUPLEX CRYSTAL STRUCTURE
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 283 | 10% MPD, 10 MM MAGNESIUM CHLORIDE, 50 MM POTASSIUM CHLORIDE, AND 50 MM SODIUM CACODYLATE AT PH 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 283K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 1.87 | 34.22 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 94.85 | α = 90 |
| b = 94.85 | β = 90 |
| c = 30.363 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | H 3 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 105 | CCD | OXFORD ONYX CCD | 2012-07-28 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | DIAMOND BEAMLINE I04 | 0.9686 | Diamond | I04 |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | 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 | 2.73 | 28.48 | 94.4 | 0.115 | 5 | 2.6 | 2439 | ||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 3QXR | 2.73 | 28.48 | 2439 | 117 | 95.2 | 0.18504 | 0.18237 | 0.24332 | RANDOM | 42.002 | ||||||
| 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] | |
| 0.3 | 0.15 | 0.3 | -0.98 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_long_range_B_refined | 6.448 |
| r_long_range_B_other | 6.446 |
| r_scangle_other | 5.054 |
| r_scbond_other | 3.093 |
| r_scbond_it | 3.091 |
| r_angle_other_deg | 2.204 |
| r_angle_refined_deg | 1.281 |
| r_chiral_restr | 0.135 |
| r_gen_planes_refined | 0.01 |
| r_bond_refined_d | 0.008 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | |
| Nucleic Acid Atoms | 938 |
| Solvent Atoms | 3 |
| Heterogen Atoms | 5 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| SCALA | data scaling |
| PHASES | phasing |
| XIA | data reduction |
