7MYL
Crystal structure of DfrA1 dihydrofolate reductase in complex with TRIMETHOPRIM
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 5ECC |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 277.15 | 22% PEG3350, 0.1M Na-Cacodylate pH 6.5, 0.36M MgCl2 and 2 mM DTT |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.33 | 47.11 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 55.072 | α = 90 |
b = 72.89 | β = 90.56 |
c = 125.122 | 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 | PIXEL | DECTRIS EIGER X 9M | 2020-11-24 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | NSLS-II BEAMLINE 17-ID-1 | 0.9201 | NSLS-II | 17-ID-1 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | 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 | 2.15 | 72.89 | 98.6 | 0.19 | 0.206 | 0.078 | 0.993 | 7.6 | 6.8 | 53224 | 23.3 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 2.15 | 2.21 | 97.8 | 0.905 | 0.983 | 0.379 | 0.558 | 1.9 | 6.6 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | 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 | MOLECULAR REPLACEMENT | THROUGHOUT | 5ECC | 2.15 | 63.06 | 50486 | 2718 | 98.34 | 0.2173 | 0.2147 | 0.2659 | RANDOM | 29.331 |
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] | |
-0.6 | -0.63 | 2.38 | -1.76 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 37.538 |
r_dihedral_angle_4_deg | 21.277 |
r_dihedral_angle_3_deg | 18.029 |
r_dihedral_angle_1_deg | 9.153 |
r_angle_refined_deg | 1.414 |
r_angle_other_deg | 1.15 |
r_chiral_restr | 0.059 |
r_bond_refined_d | 0.005 |
r_gen_planes_refined | 0.005 |
r_bond_other_d | 0.001 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 7442 |
Nucleic Acid Atoms | |
Solvent Atoms | 49 |
Heterogen Atoms | 126 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
MOSFLM | data reduction |
Aimless | data scaling |
PHASER | phasing |
PDB_EXTRACT | data extraction |