3CWU
Crystal Structure of an AlkA Host/Guest Complex 2'-fluoro-2'-deoxy-1,N6-ethenoadenine:Thymine Base Pair
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | hanging drop vapor diffusion | 8 | 295 | PEG4000, NaCl, Na-HEPES, MgCl2, ethylene glycol, pH 8.0, hanging drop vapor diffusion, temperature 295K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.76 | 55.46 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 74.938 | α = 90 |
b = 100.742 | β = 93.86 |
c = 102.978 | γ = 90 |
Symmetry | |
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Space Group | P 1 21 1 |
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 | SINGLE WAVELENGTH | ||||||||||
2 | 1 | x-ray |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 24-ID-C | 0.979 | APS | 24-ID-C |
2 |
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 | 2.8 | 50 | 97.2 | 0.094 | 8.9 | 3.6 | 36783 |
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) | |||||||||||
2.8 | 2.9 | 92.9 | 0.702 | 3.3 | 3461 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | Mean Isotropic B | ||||||||||
X-RAY DIFFRACTION | 2.8 | 50 | 34414 | 1711 | 91.2 | 0.213 | 0.273 | 46.582 |
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] | |
-4.601 | -11.133 | -3.462 | 8.064 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_scangle_it | 2.774 |
c_mcangle_it | 2.056 |
c_scbond_it | 1.722 |
c_mcbond_it | 1.187 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 8860 |
Nucleic Acid Atoms | 978 |
Solvent Atoms | 37 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
SCALEPACK | data scaling |
CNS | refinement |
PDB_EXTRACT | data extraction |