3GHV
Human dihydrofolate reductase Q35K/N64F double mutant inhibitor complex
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1U70 | PDB entry 1u70 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.9 | 298 | 100 mM KPo4, pH 6.9, 30% AmSO4, 3% v/v ethanol, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.49 | 50.6 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 84.21 | α = 90 |
b = 84.21 | β = 90 |
c = 78.03 | 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 | 200 | CCD | MARMOSAIC 325 mm CCD | mirrors | 2008-06-13 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL11-1 | 0.9422 | SSRL | BL11-1 |
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 | 1.3 | 53.3 | 100 | 0.055 | 0.019 | 7.7 | 50763 | 48184 | 2 | 2 | 16.3 |
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 | 1.3 | 1.37 | 100 | 0.109 | 0.121 | 11.2 | 5.2 | 7363 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | 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 (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB entry 1u70 | 1.3 | 53.3 | 1 | 2 | 48184 | 48184 | 2577 | 99.99 | 0.16024 | 0.15904 | 0.18293 | RANDOM | 14.045 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 33.319 |
r_dihedral_angle_4_deg | 13.178 |
r_dihedral_angle_3_deg | 11.371 |
r_dihedral_angle_1_deg | 6.444 |
r_scangle_it | 5.15 |
r_scbond_it | 3.47 |
r_angle_refined_deg | 2.562 |
r_mcangle_it | 2.182 |
r_mcbond_it | 1.276 |
r_chiral_restr | 0.554 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1505 |
Nucleic Acid Atoms | |
Solvent Atoms | 384 |
Heterogen Atoms | 116 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
MOLREP | phasing |
REFMAC | refinement |
MOSFLM | data reduction |
SCALA | data scaling |