1XPZ
Structure of human carbonic anhydrase II with 4-[4-O-sulfamoylbenzyl)(4-cyanophenyl)amino]-4H-[1,2,4]-triazole
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 8 | 277 | 0.1M Tris-HCl, 1mM zinc(II) sulfate, 2.275M ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 277K, pH 8.0 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.9 | 36.2 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 42.569 | α = 90 |
b = 72.792 | β = 90 |
c = 75.165 | 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 | 298 | CCD | ADSC QUANTUM 4 | 2004-02-28 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SRS BEAMLINE PX14.1 | 1.488 | SRS | PX14.1 |
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 | 2.02 | 50 | 98.1 | 0.083 | 0.083 | 11.3 | 5.1 | 15968 | 15564.8 | 947.4 | 13.6 |
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) | ||||||||||
2.02 | 2.09 | 95.5 | 0.177 | 0.177 | 11.3 | 6.3 | 15968 |
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 | 1UGG.pdb with alanine-65 (wild-type sequence) | 2.02 | 23.69 | 15493 | 15493 | 925 | 97.5 | 0.202 | 0.196 | 0.223 | RANDOM | 27.1 |
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] | |
-2.55 | 2.06 | 0.49 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 24.1 |
c_scangle_it | 3.21 |
c_mcangle_it | 2.22 |
c_scbond_it | 2.17 |
c_mcbond_it | 1.4 |
c_angle_deg | 1.3 |
c_improper_angle_d | 0.78 |
c_bond_d | 0.006 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2059 |
Nucleic Acid Atoms | |
Solvent Atoms | 121 |
Heterogen Atoms | 28 |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
CNS | phasing |