2IH3
Ion selectivity in a semi-synthetic K+ channel locked in the conductive conformation
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 6 | 293 | 20-25% PEG 400, 50 mM Magnesium acetate, 150 mM KCl, pH 6.0. Crystals were cryoprotected by increasing PEG concentration to 40%, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.83 | 67.91 |
Crystal Data
Unit Cell | |
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Length ( ? ) | Angle ( ? ) |
a = 155.724 | ¦Á = 90 |
b = 155.724 | ¦Â = 90 |
c = 75.741 | ¦Ã = 90 |
Symmetry | |
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Space Group | I 4 |
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 | ADSC QUANTUM 315 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | NSLS BEAMLINE X25 | NSLS | X25 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 1.72 | 31.2 | 98.1 | 0.064 | 20.7 | 2.9 | 89856 | 24.3 |
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 | 1.72 | 1.78 | 87.6 | 0.38 | 2 | 1.9 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | 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 | 1.72 | 31.2 | 89856 | 8978 | 93.4 | 0.233 | 0.233 | 0.242 | RANDOM | 35.1 |
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] | |
3.08 | 3.08 | -6.16 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 25.6 |
c_scangle_it | 3.15 |
c_mcangle_it | 2.2 |
c_scbond_it | 2.09 |
c_improper_angle_d | 1.9 |
c_angle_deg | 1.6 |
c_mcbond_it | 1.39 |
c_bond_d | 0.013 |
c_bond_d_na | |
c_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4034 |
Nucleic Acid Atoms | |
Solvent Atoms | 266 |
Heterogen Atoms | 38 |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
PDB_EXTRACT | data extraction |
CBASS | data collection |
DENZO | data reduction |
SCALEPACK | data scaling |