2FXQ
Single-stranded DNA-binding protein from Thermus aquaticus
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.6 | 293 | protein solution : 25mg/ml, 1M NaCl, 10mM Tris pH 7.9. well solution : 25% MPD, 20 mM CaCl2, 0.1 M acetate buffer pH 4.6 mix 1:1, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.09 | 41.25 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 51.14 | α = 90 |
b = 163.77 | β = 90 |
c = 60.16 | 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 | 100 | CCD | MARRESEARCH | 2005-02-07 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 22-BM | 1.039 | APS | 22-BM |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 1.85 | 40 | 100 | 0.05 | 0.05 | 33.9 | 6 | 22066 | 22066 | -3 | -3 | 31.6 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 1.85 | 1.92 | 100 | 0.832 | 0.832 | 2.4 | 6 | 2165 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 1.85 | 30 | -3 | 20912 | 20912 | 1130 | 100 | 0.19207 | 0.19207 | 0.18934 | 0.24731 | RANDOM | 35.318 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
-0.86 | -1.24 | 2.11 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_scangle_it | 10.112 |
r_dihedral_angle_1_deg | 7.109 |
r_scbond_it | 6.772 |
r_mcangle_it | 5.602 |
r_mcbond_it | 3.269 |
r_angle_refined_deg | 1.934 |
r_symmetry_vdw_refined | 0.244 |
r_nbd_refined | 0.228 |
r_symmetry_hbond_refined | 0.227 |
r_xyhbond_nbd_refined | 0.212 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1547 |
Nucleic Acid Atoms | |
Solvent Atoms | 135 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
HKL-2000 | data reduction |
SCALEPACK | data scaling |
AMoRE | phasing |