4RJ1
Structural variations and solvent structure of UGGGGU quadruplexes stabilized by Sr2+ ions
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7 | 298 | MgCl2 20 mM, SrCl2 80 mM, CaCl2 40mM, SPM 4Cl 12mM, Sodium cacodylate 20mM, 35% MPD , pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.61 | 23.51 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 36.618 | α = 90 |
b = 36.618 | β = 90 |
c = 37.382 | γ = 90 |
Symmetry | |
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Space Group | P 4 21 2 |
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 | CCD | ADSC QUANTUM 315r | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL9-1 | 0.979 | SSRL | BL9-1 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 0.92 | 40 | 95 | 17321 | 17321 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||||
1 | 0.92 | 0.97 | 69.3 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | 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 | 0.92 | 37.38 | 15579 | 1725 | 94.8 | 0.09293 | 0.09116 | 0.10869 | RANDOM | 8.191 |
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] | |
-0.01 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_sphericity_free | 22.257 |
r_sphericity_bonded | 8.099 |
r_rigid_bond_restr | 6.947 |
r_long_range_B_refined | 3.227 |
r_long_range_B_other | 2.247 |
r_angle_other_deg | 1.799 |
r_angle_refined_deg | 1.568 |
r_scangle_other | 1.275 |
r_scbond_it | 0.885 |
r_scbond_other | 0.875 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | |
Nucleic Acid Atoms | 258 |
Solvent Atoms | 66 |
Heterogen Atoms | 10 |
Software
Software | |
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Software Name | Purpose |
MOSFLM | data reduction |
PHASER | phasing |
REFMAC | refinement |
SCALA | data scaling |