3T42
Human aldose reductase in complex with a nitrile-containing IDD inhibitor
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2PZN |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 4.2 | 298 | The hanging drop method was used to obtain crystals (EasyXtal Tool 24 culture plates, Qiagen). WT hALR2 was co-crystallized with the oxidized form of coenzyme NADP+ (Sigma) and inhibitor 2 at room temperature (ratios of protein / inhibitor / coenzyme = 1/2/2). Hanging drops were made by the mixing mother liquor (0.06 M citric acid, 0.04 M Bis-tris propane, 12% (w/v) PEG 3350, pH 4.2) with holoenzyme solution (10 mg/mL, 20 mM hepes, pH 7.0). Crystals were observed after three days of equilibration, EVAPORATION, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.18 | 43.49 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 39.858 | α = 76.35 |
b = 46.963 | β = 77.21 |
c = 46.907 | γ = 67.79 |
Symmetry | |
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Space Group | P 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 | 93 | CCD | MARMOSAIC 325 mm CCD | 2010-04-20 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL9-2 | SSRL | BL9-2 |
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 | 1.28 | 50 | 94.3 | 0.042 | 18.4 | 3.9 | 73538 | 13.14 |
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 | 1.28 | 1.33 | 87.7 | 0.301 | 3.4 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution 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 (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | 2PZN | 1.28 | 22.29 | 0.13 | 69094 | 1860 | 88.4 | 0.152 | 0.151 | 0.14 | 0.178 | 0.17 |
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] | |
-0.7789 | 1.5685 | 0.4889 | 3.1947 | -0.7156 | -2.4157 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 19.401 |
f_angle_d | 1.341 |
f_chiral_restr | 0.077 |
f_bond_d | 0.008 |
f_plane_restr | 0.006 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2525 |
Nucleic Acid Atoms | |
Solvent Atoms | 431 |
Heterogen Atoms | 88 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
PHASER | phasing |
PHENIX | refinement |
HKL-2000 | data reduction |
SCALEPACK | data scaling |