3IXO
Crystal Structure of uncomplexed HIV_1 Protease Subtype A
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2AQU | PDB entry 2AQU |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 5 | 293 | 1.0 M NaCl, 30 mM citrate, mixed 1:1 with protein, then mix 0.25 part Anapoe 58 detergent., pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.14 | 42.48 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 62.207 | α = 90 |
b = 62.207 | β = 90 |
c = 82.47 | γ = 120 |
Symmetry | |
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Space Group | P 61 |
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 | MARMOSAIC 225 mm CCD | mirrors | 2009-03-16 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 22-ID | 1.00 | APS | 22-ID |
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 | 1.7 | 32.8 | 94.1 | 0.089 | 0.089 | 12.3 | 4.4 | 19874 | 18760 | 18.3 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 1.7 | 1.76 | 99.2 | 0.509 | 2.2 | 3.7 | 1964 |
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 (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 | PDB entry 2AQU | 1.7 | 32.8 | 19874 | 18760 | 889 | 94.1 | 0.205 | 0.205 | 0.244 | SHELLS | 28.2 |
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] | |
0.49 | 0.49 | -0.99 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 26.5 |
c_scangle_it | 3 |
c_mcangle_it | 2.53 |
c_scbond_it | 1.91 |
c_angle_deg | 1.5 |
c_mcbond_it | 1.47 |
c_improper_angle_d | 0.8 |
c_bond_d | 0.008 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1510 |
Nucleic Acid Atoms | |
Solvent Atoms | 107 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
CNS | phasing |