3A89
Crystal Structure of Trypsin complexed with (E)-4-((2-nicotinoylhydrazono)methyl)benzimidamide (soaking 4 hours)
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 3A7T |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8.5 | 277 | 0.1M Tris-HCl, 30% PEG 3350, 0.2M Lithium Sulfate, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.27 | 45.87 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 54.584 | α = 90 |
b = 58.339 | β = 90 |
c = 66.575 | 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 | IMAGE PLATE | RIGAKU RAXIS VII | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU FR-E SUPERBRIGHT | 1.54 |
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 | 1.8 | 50 | 99.8 | 0.041 | 0.041 | 29.5 | 5.6 | -3 |
Highest Resolution Shell | |||||||||||||||||||
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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) | ||||||||||
1.8 | 1.86 | 98.5 | 0.086 | 0.086 | 11.9 | 5.4 |
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 (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 3A7T | 1.8 | 19.93 | 19217 | 1027 | 99.8 | 0.14583 | 0.14346 | 0.19284 | RANDOM | 12.059 |
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] | |
0.18 | -0.13 | -0.05 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 40.456 |
r_dihedral_angle_4_deg | 14.087 |
r_dihedral_angle_3_deg | 11.062 |
r_dihedral_angle_1_deg | 6.232 |
r_scangle_it | 2.67 |
r_scbond_it | 1.762 |
r_angle_refined_deg | 1.196 |
r_mcangle_it | 1.088 |
r_mcbond_it | 0.691 |
r_nbtor_refined | 0.3 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1629 |
Nucleic Acid Atoms | |
Solvent Atoms | 423 |
Heterogen Atoms | 37 |
Software
Software | |
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Software Name | Purpose |
LAFIRE | model building |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
LAFIRE | phasing |