1SKZ
PROTEASE INHIBITOR
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6 | EQUILIBRATION AGAINST 100 MM NA CITRATE (PH6.0), 1MM PMSF, 10 MM NA AZIDE, 31% (W/V) AMMONIUM SULFATE, 2.75 M NA CHLORIDE IN HANGING DROPS. FOR CRYO EXPERIMENTS TRANSFER TO 100 MM NA CITRATE (PH6.0), 30% (W/V) AMMONIUM SULFATE, 2.2 M NA CHLORIDE, 20% GLYCEROL, AFTER PREEQUILIBRATION AGAINST THIS SOLUTION., vapor diffusion - hanging drop |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.1 | 41.8 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 76.5 | α = 90 |
b = 76.5 | β = 90 |
c = 86.6 | γ = 90 |
Symmetry | |
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Space Group | I 4 2 2 |
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 | IMAGE PLATE | MARRESEARCH | 1996-09-19 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | EMBL/DESY, HAMBURG BEAMLINE BW7A | EMBL/DESY, Hamburg | BW7A |
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 | 1.9 | 9.9 | 95 | 0.08 | 0.38 | 173 | 9.7 | 10300 |
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) | ||||||||||
1.9 | 2 | 92 | 0.071 | 0.071 | 110 | 8.2 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | Mean Isotropic B | ||||||||
X-RAY DIFFRACTION | MIR | THROUGHOUT | 1.9 | 5 | 9103 | 94 | 0.217 | 0.217 | 26 |
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 |
x_dihedral_angle_d | 26.6 |
x_mcangle_it | 3.3 |
x_scangle_it | 3.3 |
x_improper_angle_d | 2.5 |
x_mcbond_it | 2 |
x_scbond_it | 2 |
x_angle_deg | 1.49 |
x_bond_d | 0.015 |
x_bond_d_na | |
x_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 790 |
Nucleic Acid Atoms | |
Solvent Atoms | 88 |
Heterogen Atoms | 1 |
Software
Software | |
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Software Name | Purpose |
XDS | data scaling |
XSCALE | data scaling |
X-PLOR | model building |
X-PLOR | refinement |
XDS | data reduction |
X-PLOR | phasing |