1F33
THE STRUCTURAL BASIS FOR DNA PROTECTION BY E. COLI DPS PROTEIN
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 8.1 | 298 | 10mM MOPS, 100mM KCl, 10% glycerol + 100mM TrisHCL, 100mM KCl, 10% glycerol, 11% PEG 8000, and 5mM DTT , pH 8.1, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.43 | 49.9 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 117.961 | α = 90 |
b = 139.123 | β = 90 |
c = 263.264 | γ = 90 |
Symmetry | |
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Space Group | C 2 2 21 |
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 | 105 | IMAGE PLATE | MACSCIENCE | 1997-07-22 | M | SINGLE WAVELENGTH | ||||||
2 | 1 | 95 | AREA DETECTOR | SDMS | 1999-05-05 |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | MACSCIENCE | |||
2 | SYNCHROTRON | NSLS BEAMLINE X12B | NSLS | X12B |
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 | 2.5 | 30 | 98.2 | 0.076 | 8.2 | 3.63 | 273217 | 75305 | 85.7 |
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 | 2.59 | 2.64 | 99.7 | 0.291 | 3.62 | 13825 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | 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 | MOLECULAR REPLACEMENT | THROUGHOUT | DPS D75C,D78A UNPUBLISHED STRUCTURE | 2.6 | 29.02 | 75266 | 65012 | 6588 | 97.5 | 0.209 | 0.209 | 0.21 | 0.244 | 0.25 | THIN SHELLS | 60.1 |
Temperature Factor Modeling | ||||||
---|---|---|---|---|---|---|
Anisotropic B[1][1] | Anisotropic B[2][2] | Anisotropic B[3][3] | ||||
-0.09 | 0.8 | -0.7 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 17.9 |
c_scangle_it | 2.69 |
c_mcangle_it | 1.97 |
c_scbond_it | 1.76 |
c_mcbond_it | 1.18 |
c_angle_deg | 1.1 |
c_improper_angle_d | 0.72 |
c_bond_d | 0.007 |
c_bond_d_na | |
c_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 14872 |
Nucleic Acid Atoms | |
Solvent Atoms | 386 |
Heterogen Atoms | 96 |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
SCALEPACK | data scaling |
CNS | refinement |
CNS | phasing |