1GVK
Porcine pancreatic elastase acyl enzyme at 0.95 A resolution
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1QIX | PDB ENTRY 1QIX |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 5 | 293 | 25 MG/ML PPE, 17.5 MG/ML N-AC-NPI- CO2H, 50MM SODIUM ACETATE PH5.0, 25 MM SODIUM SULPHATE, 20 C, PH 5.00 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.1 | 41 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 50.176 | α = 90 |
b = 57.778 | β = 90 |
c = 74.409 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
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 | MARRESEARCH | FOCUSING MIRRORS | 2000-07-15 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID14-3 | ESRF | ID14-3 |
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 | 0.945 | 26.93 | 92.7 | 0.043 | 5.9 | 2.8 | 128075 |
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 | 0.94 | 0.97 | 60.9 | 0.347 | 2.1 | 1.3 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | PDB ENTRY 1QIX | 0.94 | 26.93 | 121580 | 6432 | 92.7 | 0.122 | 0.122 | 0.147 | RANDOM |
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] | |
Coordinate Error | ||
---|---|---|
Structure Solution Method | Refinement High Resolution | Refinement Low Resolution |
44 | 1686 | 2094.6 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
s_angle_d | 0.025 |
s_bond_d | 0.016 |
s_similar_dist | |
s_from_restr_planes | |
s_zero_chiral_vol | |
s_non_zero_chiral_vol | |
s_anti_bump_dis_restr | |
s_rigid_bond_adp_cmpnt | |
s_similar_adp_cmpnt | |
s_approx_iso_adps |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1848 |
Nucleic Acid Atoms | |
Solvent Atoms | 331 |
Heterogen Atoms | 11 |
Software
Software | |
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Software Name | Purpose |
SHELXL-97 | refinement |
MOSFLM | data reduction |
SCALA | data scaling |
CNS | phasing |