2OVC
Crystal structure of a coiled-coil tetramerization domain from Kv7.4 channels
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 5.5 | 289 | 45% MPD, 0.2M ammonium acetate, 0.1M Bis-Tris, pH 5.5, vapor diffusion, hanging drop, temperature 289K |
Crystal Properties | |
---|---|
Matthews coefficient | Solvent content |
2.17 | 43.25 |
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 33.185 | α = 90 |
b = 33.185 | β = 90 |
c = 55.283 | γ = 90 |
Symmetry | |
---|---|
Space Group | I 4 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | CCD | ADSC QUANTUM 210 | Double Crystal | 2005-05-20 | SINGLE WAVELENGTH | ||||||
2 | 1 |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ALS BEAMLINE 8.3.1 | 1.116 | ALS | 8.3.1 |
2 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 2.07 | 28.46 | 99.6 | 0.053 | 15.3 | 7.3 | 1841 |
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 | 2.07 | 2.14 | 100 | 0.096 | 6.1 | 194 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 2.07 | 28.46 | 1841 | 81 | 99.25 | 0.197 | 0.196 | 0.224 | RANDOM | 22.128 |
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] | |
-0.24 | -0.24 | 0.48 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 48.328 |
r_dihedral_angle_3_deg | 18.303 |
r_dihedral_angle_1_deg | 5.17 |
r_scangle_it | 4.569 |
r_scbond_it | 2.565 |
r_dihedral_angle_4_deg | 2.443 |
r_angle_refined_deg | 1.586 |
r_mcangle_it | 1.513 |
r_mcbond_it | 0.854 |
r_nbtor_refined | 0.304 |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 245 |
Nucleic Acid Atoms | |
Solvent Atoms | 18 |
Heterogen Atoms |
Software
Software | |
---|---|
Software Name | Purpose |
REFMAC | refinement |
SCALEPACK | data scaling |
CNS | refinement |
DENZO | data reduction |
PDB_EXTRACT | data extraction |
ADSC | data collection |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
CNS | phasing |