4MTO
Structural Basis for Ca2+ Selectivity of a Voltage-gated Calcium Channel
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.75 | 298 | 0.1M Na-citrate,pH 4.75, 2M ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 176.635 | α = 90 |
b = 177.655 | β = 132.53 |
c = 130.6 | γ = 90 |
Symmetry | |
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Space Group | C 1 2 1 |
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 315r | 2012-11-15 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ALS BEAMLINE 8.2.1 | 1.75 | ALS | 8.2.1 |
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 | 3.4 | 30 | 90.7 | 0.125 | 5.4 | 36840 | 36840 | 1 | 1 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||||
1 | 3.4 | 3.58 | 93.9 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | 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 | 3.402 | 29.99 | 35016 | 35016 | 1821 | 90.4 | 0.26144 | 0.2596 | 0.29741 | RANDOM | 112.378 |
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] | |
4.94 | 3.46 | -4.69 | -1.28 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.138 |
r_long_range_B_refined | 27.237 |
r_long_range_B_other | 27.237 |
r_mcangle_other | 20.949 |
r_mcangle_it | 20.916 |
r_dihedral_angle_4_deg | 18.649 |
r_dihedral_angle_3_deg | 18.296 |
r_scangle_other | 18.271 |
r_mcbond_it | 14.999 |
r_mcbond_other | 14.993 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 7192 |
Nucleic Acid Atoms | |
Solvent Atoms | 4 |
Heterogen Atoms | 191 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
PHENIX | model building |
REFMAC | refinement |
MOSFLM | data reduction |
SCALA | data scaling |
PHENIX | phasing |