1R9F
Crystal structure of p19 complexed with 19-bp small interfering RNA
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 7.5 | 293 | ammonium sulfate, potassium chloride, HEPES-NaOH, dithiothreitol, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K, pH 7.50 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.05 | 39.86 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 91.249 | α = 90 |
b = 91.249 | β = 90 |
c = 148.63 | γ = 120 |
Symmetry | |
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Space Group | H 3 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 | MARRESEARCH | 2003-07-18 | M | MAD |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 14-ID-B | 0.9791,0.9789,0.9562 | APS | 14-ID-B |
Data Collection
Overall | |||||||||||||||||||
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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 | 1.85 | 50 | 99.1 | 0.06 | 44.8 | 9.5 | 39408 | -3 | 21.8 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1.85 | 1.92 | 93.2 | 0.725 | 2 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | ||||
X-RAY DIFFRACTION | MAD | THROUGHOUT | 1.85 | 14.86 | 36309 | 36309 | 1772 | 92.3 | 0.212 | 0.212 | 0.21 | 0.23 | 0.22 | RANDOM | 46.4 |
Temperature Factor Modeling | ||||||
---|---|---|---|---|---|---|
Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[2][2] | Anisotropic B[3][3] | |||
5.46 | 4.19 | 5.46 | -10.91 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 16.3 |
c_scangle_it | 3.15 |
c_mcangle_it | 2.21 |
c_scbond_it | 2.11 |
c_mcbond_it | 1.42 |
c_improper_angle_d | 1.02 |
c_angle_deg | 0.9 |
c_bond_d | 0.004 |
c_bond_d_na | |
c_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 972 |
Nucleic Acid Atoms | 810 |
Solvent Atoms | 70 |
Heterogen Atoms | 10 |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
HKL-2000 | data reduction |
SCALEPACK | data scaling |
CNS | phasing |