7QE9
Human cationic trypsin (TRY1) complexed with serine protease inhibitor Kazal type 1 N34S (SPINK1 N34S)
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.4 | 293 | 1 uL protein solution (20 mg/mL in 20 mM Hepes pH 7.4, 150 mM NaCl) + 1 uL well solution (15% PEG 4000, 0.3 M AS), cryo: 15% PEG 4000, 0.3 M AS, 8% PEG 400 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.71 | 54.53 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 76.555 | α = 90 |
b = 76.555 | β = 90 |
c = 189.719 | γ = 120 |
Symmetry | |
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Space Group | P 31 2 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 PILATUS3 S 2M | DCM Si(111) | 2020-10-23 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | BESSY BEAMLINE 14.2 | 0.9184 | BESSY | 14.2 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | 2.1 | 50 | 99.8 | 0.174 | 0.179 | 0.999 | 14.8 | 19.7 | 38593 | -3 | 50.1 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Rrim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
1 | 2.1 | 2.22 | 98.7 | 3.172 | 3.256 | 0.411 | 1 | 19.4 |
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 (All) | R-Work | R-Free | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | 1TRN_A, 1CGI_I | 2.1 | 50 | 38518 | 1899 | 99.974 | 0.195 | 0.1927 | 0.2336 | 50.032 |
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] | |
0.174 | 0.087 | 0.174 | -0.565 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.453 |
r_dihedral_angle_4_deg | 21.506 |
r_dihedral_angle_3_deg | 17.006 |
r_dihedral_angle_1_deg | 7.786 |
r_lrange_it | 6.422 |
r_lrange_other | 6.402 |
r_scangle_it | 3.804 |
r_scangle_other | 3.759 |
r_mcangle_it | 2.727 |
r_mcangle_other | 2.727 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4241 |
Nucleic Acid Atoms | |
Solvent Atoms | 231 |
Heterogen Atoms | 20 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
XDS | data reduction |
XDS | data scaling |
PHASER | phasing |