1R8O
Crystal structure of an unusual Kunitz-type trypsin inhibitor from Copaifera langsdorffii seeds
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.3 | 291 | 25% PEG4000 in 0.1M sodium acetate buffer, pH 4.3, VAPOR DIFFUSION, HANGING DROP, temperature 291K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.24 | 45.05 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 58.71 | α = 90 |
b = 58.71 | β = 90 |
c = 93.75 | γ = 90 |
Symmetry | |
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Space Group | P 43 21 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 | 2000-09-04 | M | SINGLE WAVELENGTH | ||||||
2 | 1 | x-ray | 100 | IMAGE PLATE | MARRESEARCH | 2000-09-15 | M | SINGLE WAVELENGTH | ||||||
3 | 1 | x-ray | 100 | IMAGE PLATE | MARRESEARCH | 2000-09-18 | M | SINGLE WAVELENGTH | ||||||
1,2,3 | 1 |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | LNLS BEAMLINE D03B-MX1 | 1.54 | LNLS | D03B-MX1 |
2 | SYNCHROTRON | LNLS BEAMLINE D03B-MX1 | 1.54 | LNLS | D03B-MX1 |
3 | SYNCHROTRON | LNLS BEAMLINE D03B-MX1 | 1.54 | LNLS | D03B-MX1 |
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 | ||||||||
1,2,3 | 1.83 | 25.28 | 95.7 | 0.089 | 23.6 | 8.2 | 15027 | 14387 | 14.2 |
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) | |||||||||||
1,2,3 | 1.83 | 1.87 | 97.6 | 0.508 | 3.3 | 5.4 | 14387 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | 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 | SIR QUICK CRIO-SOAKING METHOD | THROUGHOUT | 1.83 | 25.28 | 15027 | 14387 | 703 | 95.7 | 0.17 | 0.17 | 0.16844 | 0.21237 | RANDOM | 13.229 |
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] | |
0.21 | 0.21 | -0.41 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_1_deg | 6.559 |
r_scangle_it | 4.823 |
r_scbond_it | 3.052 |
r_mcangle_it | 1.885 |
r_angle_refined_deg | 1.734 |
r_mcbond_it | 1.064 |
r_symmetry_hbond_refined | 0.464 |
r_symmetry_vdw_refined | 0.396 |
r_xyhbond_nbd_refined | 0.256 |
r_nbd_refined | 0.229 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1267 |
Nucleic Acid Atoms | |
Solvent Atoms | 182 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
SHARP | phasing |