4XE1
Human carbonic anhydrase II in complex with 6-SULFAMOYL-SACCHARIN
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1CA2 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 293 | AMMONIUM SULPHATE 2.6M, TRIS-HCL 0.1M, SODIUM CHLORIDE 0.3M, 4-HYDROXYMERCURYBENZOATE |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.07 | 40.7 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 42.212 | α = 90 |
b = 41.68 | β = 104.33 |
c = 71.731 | γ = 90 |
Symmetry | |
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Space Group | P 1 21 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 | CCD | RIGAKU SATURN 944 | 2013-12-10 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU | 1.54178 |
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 | 1.8 | 20 | 99.1 | 0.047 | 21.2 | 3.8 | 22414 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 1.8 | 1.86 | 92.9 | 0.101 | 7.4 | 2.1 |
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-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | FOURIER SYNTHESIS | FREE R-VALUE | 1CA2 | 1.8 | 20 | 22116 | 1073 | 97.7 | 0.168 | 0.214 | Random selection | 14.2 |
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] | |
0.586 | -0.486 | -2.694 | 2.108 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_scangle_it | 2.615 |
c_scbond_it | 1.813 |
c_mcangle_it | 1.683 |
c_angle_d | 1.6 |
c_mcbond_it | 1.19 |
c_bond_d | 0.01 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2059 |
Nucleic Acid Atoms | |
Solvent Atoms | 219 |
Heterogen Atoms | 39 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data reduction |
CNS | refinement |
PDB_EXTRACT | data extraction |
SCALEPACK | data scaling |
O | model building |