1P7B
Crystal structure of an inward rectifier potassium channel
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 9 | 293 | PEG-400, Magnesium Acetate, Glycine, Hega-10, pH 9.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
5.58 | 77.77 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 92.84 | α = 90 |
b = 105.62 | β = 90 |
c = 258.63 | γ = 90 |
Symmetry | |
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Space Group | I 2 2 2 |
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 4 | 2002-11-03 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID14-1 | 0.933 | ESRF | ID14-1 |
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 | 3.65 | 20 | 100 | 0.087 | 4.9 | 14459 | 14455 | -3 | 74.3 |
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 | 3.65 | 3.85 | 99.4 | 0.412 | 1.8 | 6.3 | 2083 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | ||
X-RAY DIFFRACTION | MIR | Throughout the refinement. | 3.65 | 7.5 | -3 | 12777 | 12773 | 638 | 100 | 0.297 | 0.297 | 0.295 | 0.29 | 0.329 | 0.33 | 5 % of reflections were selected in thin resolution shells |
Temperature Factor Modeling | ||||||
---|---|---|---|---|---|---|
Anisotropic B[1][1] | Anisotropic B[2][2] | Anisotropic B[3][3] | ||||
-33.184 | -16.813 | 49.996 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_angle_deg | 2.5 |
c_bond_d | 0.022 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4048 |
Nucleic Acid Atoms | |
Solvent Atoms | 7 |
Heterogen Atoms | 4 |
Software
Software | |
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Software Name | Purpose |
MOSFLM | data reduction |
SCALA | data scaling |
SHELXS | phasing |
MLPHARE | phasing |
DM | model building |
RAVE | model building |
CNS | refinement |
CCP4 | data scaling |
DM | phasing |
RAVE | phasing |