1QBP
CRYSTAL STRUCTURE OF A BROMINATED RNA HELIX WITH FOUR MISMATCHED BASE PAIRS
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7 | 292 | 25 MM SODIUM CACODYLATE, 45 MM MGCL2, 60 MM SPERMINE, 6.7 % MPD, RESERVOIR 40 % MPD, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 292K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.03 | 39.45 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 104.45 | α = 90 |
b = 24.27 | β = 118.76 |
c = 104.45 | γ = 90 |
Symmetry | |
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Space Group | C 1 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 | IMAGE PLATE | FUJI | 1996-02-25 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL1-5 | SSRL | BL1-5 |
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 | 2.1 | 30 | 99 | 0.06 | 11.5 | 4 | 11984 | 11919 | 2 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work (Depositor) | R-Free (Depositor) | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | 2.1 | 999 | 2 | 12344 | 11919 | 1192 | 97 | 0.217 | 0.217 | 0.253 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
x_angle_d | 1.21 |
x_bond_d | 0.01 |
x_bond_d_na | |
x_bond_d_prot | |
x_angle_d_na | |
x_angle_d_prot | |
x_angle_deg | |
x_angle_deg_na | |
x_angle_deg_prot | |
x_dihedral_angle_d |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | |
Nucleic Acid Atoms | 1800 |
Solvent Atoms | 110 |
Heterogen Atoms | 12 |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
TRUNCATE | data reduction |
MLPHARE | phasing |
X-PLOR | refinement |
CCP4 | data scaling |