3DDL
Crystallographic Structure of Xanthorhodopsin, a Light-Driven Ion Pump with Dual Chromophore
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 5.6 | 295 | 5mg/ml xanthorhodopsin in 30mM phosphate pH 5.6, 1mM Na azide was solubilized in 1/3 volume of 16.7% dimyristoyl phoshatidylcholine in 20% nonyl maltoside. Crystals grew in 2.5-3M Na phosphate, pH 5.6, 2.5 mM Na azide after 3-4 months, VAPOR DIFFUSION, SITTING DROP, temperature 295K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.68 | 54.03 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 52.74 | α = 76.35 |
b = 59.49 | β = 74.93 |
c = 59.72 | γ = 64.08 |
Symmetry | |
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Space Group | P 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 315 | 2007-12-12 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL9-1 | 0.979 | SSRL | BL9-1 |
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 | 1.9 | 45.1 | 94.1 | 0.057 | 8.4 | 3.6 | 46289 |
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 | 1.9 | 1.97 | 85.5 | 0.485 | 1.5 | 3.53 | 4215 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | Mean Isotropic B | ||||||||||
X-RAY DIFFRACTION | 1.9 | 45.1 | 46278 | 2333 | 94.1 | 0.247 | 0.265 | 46.446 |
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] | |
16.933 | 3.302 | -16.013 | -0.766 | -6.765 | -16.167 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_scangle_it | 2.859 |
c_mcangle_it | 2.257 |
c_scbond_it | 1.973 |
c_mcbond_it | 1.413 |
c_angle_deg | 1.349 |
c_bond_d | 0.012 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3925 |
Nucleic Acid Atoms | |
Solvent Atoms | 62 |
Heterogen Atoms | 430 |
Software
Software | |
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Software Name | Purpose |
d*TREK | data scaling |
CNS | refinement |
PDB_EXTRACT | data extraction |
Blu-Ice | data collection |
d*TREK | data reduction |
PHASER | phasing |