3NAO
A DNA Crystal Designed to Contain Two Molecules per Asymmetric Unit Cell
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | SLOW COOLING | 7 | 293 | 125 mM magnesium acetate, 50 mM HEPES (pH 7.0) and 10% MPD in a 100 L sitting drop, equilibrated against a 0.5 ml reservoir of 1.4 M ammonium sulphate for two weeks. SLOW COOLING, temperature changed from 363K to 293K. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
7.67 | 83.97 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 105.345 | α = 90 |
b = 105.345 | β = 90 |
c = 183.938 | γ = 120 |
Symmetry | |
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Space Group | H 3 |
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 | M | SINGLE WAVELENGTH | |||||||||
2 | 1 | x-ray |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | NSLS BEAMLINE X6A | 1.1 | NSLS | X6A |
2 | SYNCHROTRON | NSLS BEAMLINE X25 | 1.0 | NSLS | X25 |
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 | 5.03 | 34.12 | 85.1 | 3237 | 3129 |
Refinement
Statistics | |||||||||||||||||||
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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-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | 5.03 | 34.118 | 0.17 | 3237 | 2742 | 290 | 84.94 | 0.1949 | 0.1907 | 0.19 | 0.2288 | 0.23 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[2][2] | Anisotropic B[3][3] | ||||
37.29 | 37.29 | 263.2329 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 33.054 |
f_angle_d | 1.26 |
f_chiral_restr | 0.055 |
f_bond_d | 0.005 |
f_plane_restr | 0.003 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | |
Nucleic Acid Atoms | 1710 |
Solvent Atoms | |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
ADSC | data collection |
PHENIX | model building |
PHENIX | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
PHENIX | phasing |