3I4U
Crystal Structure Analysis of a helicase associated domain
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8 | 293 | 2uL drop (1:1); 1.7M (NH4)2SO4, 0.1M Tris/HCl, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.21 | 44.38 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 78.854 | α = 90 |
b = 78.854 | β = 90 |
c = 88.793 | γ = 90 |
Symmetry | |
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Space Group | P 41 21 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 | MAR CCD 165 mm | 2006-12-08 | M | SINGLE WAVELENGTH | ||||||
2 | 1 | x-ray | 100 | CCD | MAR CCD 165 mm | 2007-08-12 | MAD |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | EMBL/DESY, HAMBURG BEAMLINE BW7A | 0.91164 | EMBL/DESY, HAMBURG | BW7A |
2 | SYNCHROTRON | BESSY BEAMLINE 14.2 | 0.97976, 0.9799, 0.95, 1.0 | BESSY | 14.2 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | 50 | 99.7 | 0.069 | 29.2 | 31239 | 36.8 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | 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 | 29.48 | 15845 | 843 | 98.55 | 0.19532 | 0.19278 | 0.24486 | RANDOM | 40.097 |
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] | |
0.34 | 0.34 | -0.68 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 34.743 |
r_dihedral_angle_3_deg | 13.354 |
r_dihedral_angle_4_deg | 10.598 |
r_dihedral_angle_1_deg | 4.698 |
r_scangle_it | 3.865 |
r_mcangle_it | 2.731 |
r_scbond_it | 2.166 |
r_mcbond_it | 1.607 |
r_angle_refined_deg | 0.881 |
r_nbtor_refined | 0.293 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1952 |
Nucleic Acid Atoms | |
Solvent Atoms | 190 |
Heterogen Atoms | 45 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
SHARP | phasing |
REFMAC | refinement |
HKL-2000 | data reduction |
SCALEPACK | data scaling |