3S3V
human dihydrofolate reductase Q35K/N64F double mutant binary complex with trimethoprim
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.9 | 287 | 100 mM K2HPO4, 60% AS, 3% ETOH, pH 6.9, VAPOR DIFFUSION, HANGING DROP, temperature 287K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.54 | 51.6 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 84.688 | α = 90 |
b = 84.688 | β = 90 |
c = 78.743 | γ = 120 |
Symmetry | |
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Space Group | H 3 |
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 | 113 | IMAGE PLATE | MAR scanner 345 mm plate | mirrors | 2009-08-11 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL9-2 | 0.975 | SSRL | BL9-2 |
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 | 1.53 | 97.5 | 0.09 | 0.08 | 6.3 | 2.2 | 69508 | 30987 | 2 | 2 | 16 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 1.53 | 1.61 | 99.7 | 0.1 | 0.079 | 5.2 | 2.2 | 4622 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Cut-off Sigma (I) | 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 | 1.53 | 53.68 | 2 | 2 | 30986 | 29446 | 1539 | 97.46 | 0.195 | 0.19199 | 0.19055 | 0.21936 | RANDOM | 15.017 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.358 |
r_dihedral_angle_3_deg | 16.252 |
r_dihedral_angle_4_deg | 11.054 |
r_dihedral_angle_1_deg | 6.522 |
r_scangle_it | 5.481 |
r_scbond_it | 3.931 |
r_angle_refined_deg | 2.883 |
r_mcangle_it | 2.637 |
r_mcbond_it | 1.643 |
r_chiral_restr | 0.201 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1505 |
Nucleic Acid Atoms | |
Solvent Atoms | 151 |
Heterogen Atoms | 67 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
MOLREP | phasing |
REFMAC | refinement |
HKL-2000 | data reduction |
SCALEPACK | data scaling |