7K69
Crystal Structure of Dihydrofolate reductase (DHFR) from Mycobacterium ulcerans Agy99 in complex with NADP and inhibitor SDDC-0001574
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 6UWW | NAD and P218-bound structure, PDB entry 6uww |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 287 | Morpheus screen, condition D2: 112.5% w/v PEG 1000, 12.5% w/v PEG 3350, 12.5% v/v MPD: 20mM of each sodium L-glutamate, DL-alanine, glycine, DL-lysine HCl, DL-serine: 100mM MES/imidazole pH 6.5: MyulA.01062.a.B12.PS38539 and 15.75mg/ml + 2.5mM NADP and 4mM SDDC compound SDDC-0001574: tray: 317895h4: cryo: direct: puck: xhf8-3 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.23 | 44.9 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 28.71 | α = 90 |
b = 67.07 | β = 91.337 |
c = 44.11 | 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 | CCD | RIGAKU SATURN 944+ | 2020-09-01 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU FR-E+ SUPERBRIGHT | 1.5418 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim 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 | 1.6 | 50 | 95 | 0.03 | 0.033 | 1 | 35.22 | 6.326 | 20986 | 21.237 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
1 | 1.6 | 1.64 | 80 | 0.225 | 0.254 | 0.95 | 6.44 | 4.205 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | 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 | FREE R-VALUE | NAD and P218-bound structure, PDB entry 6uww | 1.6 | 44.1 | 1.34 | 20983 | 2117 | 95.01 | 0.1637 | 0.1605 | 0.1915 | 0 | 18.22 |
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 |
f_dihedral_angle_d | 21.2928 |
f_angle_d | 1.1306 |
f_chiral_restr | 0.0585 |
f_plane_restr | 0.0088 |
f_bond_d | 0.0086 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1232 |
Nucleic Acid Atoms | |
Solvent Atoms | 218 |
Heterogen Atoms | 85 |
Software
Software | |
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Software Name | Purpose |
XDS | data reduction |
XSCALE | data scaling |
PHENIX | refinement |
PDB_EXTRACT | data extraction |
PHASER | phasing |
Coot | model building |