2BOB
Potassium channel KcsA-Fab complex in thallium with tetrabutylammonium (TBA)
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1K4C | PDB ENTRY 1K4C |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | 5.4 | PEG 400, MAGNESIUM ACETATE, SODIUM ACETATE, pH 5.40 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.79 | 67.55 |
Crystal Data
Unit Cell | |
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Length ( ? ) | Angle ( ? ) |
a = 155.267 | ¦Á = 90 |
b = 155.267 | ¦Â = 90 |
c = 75.555 | ¦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 | 200 | CCD | MARRESEARCH | 2004-08-08 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 5ID-B | APS | 5ID-B |
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 | 2.75 | 25 | 95.7 | 0.1 | 6.9 | 3.47 | 21783 | -3 |
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 | 2.75 | 2.93 | 95.7 | 0.36 | 2.11 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 1K4C | 2.76 | 25 | 21784 | 1193 | 98.6 | 0.222 | 0.22 | 0.251 | RANDOM | 39.21 |
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] | |
1 | 1 | -2 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.447 |
r_dihedral_angle_4_deg | 22.039 |
r_dihedral_angle_3_deg | 16.539 |
r_dihedral_angle_1_deg | 6.397 |
r_angle_refined_deg | 1.21 |
r_angle_other_deg | 0.78 |
r_scangle_it | 0.294 |
r_mcangle_it | 0.254 |
r_mcbond_it | 0.241 |
r_nbd_refined | 0.197 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4074 |
Nucleic Acid Atoms | |
Solvent Atoms | 56 |
Heterogen Atoms | 19 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
XDS | data reduction |
XDS | data scaling |
CNS | phasing |