4HQI
Structure of O6-Benzyl-2'-deoxyguanosine opposite perimidinone-derived synthetic nucleoside in DNA duplex
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7 | 291 | 20 mM sodium cacodylate (pH 7.0), 6 mM spermine tetra-HCl, 20 mM LiCl, 40 mM SrCl2 and 5% v/v 2-Methyl-2,4-pentanediol (MPD), VAPOR DIFFUSION, HANGING DROP, temperature 291K |
2 | VAPOR DIFFUSION, HANGING DROP | 7 | 291 | 20 mM sodium cacodylate (pH 7.0), 6 mM spermine tetra-HCl, 40 mM KCl, 10 mM BaCl2 and 5% v/v 2-Methyl-2,4-pentanediol (MPD), VAPOR DIFFUSION, HANGING DROP, temperature 291K |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 26.384 | α = 90 |
b = 36.774 | β = 90 |
c = 77.653 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | CCD | MARMOSAIC 300 mm CCD | Si(111) | 2009-07-17 | M | SINGLE WAVELENGTH | |||||
2 | 2 | x-ray | 100 | CCD | MARMOSAIC 300 mm CCD | C(111) | 2008-07-18 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 21-ID-D | 1.60499 | APS | 21-ID-D |
2 | SYNCHROTRON | APS BEAMLINE 21-ID-G | 0.97857 | APS | 21-ID-G |
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 | 1.7 | 30 | 93.4 | 0.044 | 52.33 | 6.4 | 8811 | 8236 | 5 |
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 | 1.7 | 1.76 | 0.228 | 5.65 | 4 | 524 |
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 | SAD | THROUGHOUT | 1.7 | 20.67 | 7486 | 734 | 93.39 | 0.26227 | 0.25885 | 0.29823 | RANDOM | 44.14 |
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] | |
3.33 | 1.38 | -4.71 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_angle_refined_deg | 1.652 |
r_chiral_restr | 0.125 |
r_gen_planes_refined | 0.023 |
r_bond_refined_d | 0.011 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | |
Nucleic Acid Atoms | 481 |
Solvent Atoms | 49 |
Heterogen Atoms | 15 |
Software
Software | |
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Software Name | Purpose |
MD2 | data collection |
PHENIX | model building |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
PHENIX | phasing |