3AI8
Cathepsin B in complex with the nitroxoline
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 3K9M |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 3 | 293 | 0.1M citric acid, 21% PEG6000, pH 3.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.97 | 37.59 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 153.682 | α = 90 |
b = 29.976 | β = 126.25 |
c = 119.198 | γ = 90 |
Symmetry | |
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Space Group | C 1 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 | PSI PILATUS 6M | Collimating and focusing, Pt-coated mirrors | 2010-04-05 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ELETTRA BEAMLINE 5.2R | 1.00 | ELETTRA | 5.2R |
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 | 2.1 | 30 | 92.5 | 0.096 | 4.3 | 25966 | 25966 | 1 | 1 |
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 | 2.1 | 2.14 | 96.2 | 0.31 | 4.2 | 4.1 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Starting model | 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 | MOLECULAR REPLACEMENT | 3K9M | 2.11 | 29.1 | 22508 | 22508 | 1134 | 86.22 | 0.198 | 0.183 | 0.183 | 0.244 | random | 22.877 |
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] | |
0.16 | 0.64 | -0.16 | 0.75 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 32.742 |
r_dihedral_angle_4_deg | 19.054 |
r_dihedral_angle_3_deg | 17.607 |
r_scangle_it | 4.526 |
r_mcangle_it | 4.452 |
r_dihedral_angle_1_deg | 3.049 |
r_scbond_it | 2.848 |
r_mcbond_it | 2.734 |
r_angle_refined_deg | 1.986 |
r_chiral_restr | 0.18 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3938 |
Nucleic Acid Atoms | |
Solvent Atoms | 284 |
Heterogen Atoms | 28 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
MAR345dtb | data collection |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
PHASER | phasing |