1HQ7
CRYSTALLOGRAPHIC STUDIES OF A DODECAMER B-DNA D-(GCAAACGTTTGC)2
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6 | 277 | MPD, magnesium acetate, sodium cacodylate, spermine tetrahydrochloride, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.94 | 58.12 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 39.638 | α = 90 |
b = 39.638 | β = 90 |
c = 98.591 | γ = 120 |
Symmetry | |
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Space Group | P 31 2 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 108 | CCD | ADSC QUANTUM 4r | mirrors | 2000-06-07 | M | SINGLE WAVELENGTH | |||||
2 | 1 | x-ray | CCD | ADSC QUANTUM 1 | mirrors | 2000-08-21 | M | MAD |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | NSLS BEAMLINE X8C | 1.0722 | NSLS | X8C |
2 | ROTATING ANODE | OTHER | 1.5418 |
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 | 2.1 | 13 | 94.6 | 0.064 | 10.9 | 9.9 | 5576 | 54956 | 4 | 34.6 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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) | |||||||||||
2.1 | 2.14 | 99.6 | 0.234 | 8.3 | 269 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | 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 | MAD | THROUGHOUT | 2.1 | 13 | 4 | 5310 | 518 | 94.6 | 0.237 | 0.237 | 0.266 | RANDOM | 41.6 |
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] | |
-2.59 | -13.62 | -2.59 | 5.18 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 17.1 |
c_angle_deg | 2.1 |
c_improper_angle_d | 1.88 |
c_bond_d | 0.018 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | |
Nucleic Acid Atoms | 486 |
Solvent Atoms | 100 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
SCALEPACK | data scaling |
MLPHARE | phasing |
CNS | refinement |