6U9Z
Wild-type MthK pore in 6 mM K+
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8 | 293 | protein (in 100 mM sodium chloride, 1 mM potassium chloride, 10 mM MOPS) + 3.5-4.0 M 1,6-hexanediol, 100 mM MES-NaOH, pH 6.75, 5 mM potassium chloride |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.5 | 50.74 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 63.811 | α = 90 |
b = 63.811 | β = 90 |
c = 44.05 | γ = 90 |
Symmetry | |
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Space Group | P 4 21 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 | PIXEL | DECTRIS PILATUS 6M | 2012-06-07 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | NSLS BEAMLINE X25 | 1.009 | NSLS | X25 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | 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 | 1.954 | 44.05 | 99.66 | 0.1864 | 0.1903 | 0.03809 | 0.999 | 15.95 | 24.7 | 6986 | 27.31 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 1.954 | 2.024 | 97.05 | 2.1 | 2.148 | 0.4475 | 0.751 | 1.57 | 22.5 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | PDB entry 3LDC | 1.954 | 44.05 | 1.34 | 6982 | 691 | 99.66 | 0.2067 | 0.2046 | 0.2263 | 34.49 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 2.0876 |
f_angle_d | 0.4328 |
f_chiral_restr | 0.0351 |
f_plane_restr | 0.0026 |
f_bond_d | 0.0024 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 637 |
Nucleic Acid Atoms | |
Solvent Atoms | 30 |
Heterogen Atoms | 13 |
Software
Software | |
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Software Name | Purpose |
PHENIX | refinement |
XDS | data reduction |
PHENIX | phasing |
XDS | data scaling |