5M7L
Blastochloris viridis photosynthetic reaction center synchrotron structure
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 4CAS |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | BATCH MODE | 293 | Melted monoolein was thoroughly mixed in a ratio of 3:2 (v/v) with 0.1M HEPES, pH 7.5, 0.1 % LDAO until a viscous, transparent LCP was obtained. The formed phase was then transferred into a glass vial and sponge-phase-inducing solution (1:4 ratio) was added containing 16% Jeffamine M-600, 1M HEPES pH 7.9, 0.7 M Ammonium sulphate, 2.5% 1,2,3-Heptanetriol, which swell the cubic phase to sponge phase. After phase separation overnight, the upper phase (sponge phase) was harvested. Crystals were grown using batch crystallization in the lipidic-sponge phase. Equal amount of sponge phase and protein were mixed with 2/5 (v/v) of 1.2 M Tris-sodium citrate and allowed to incubate for several weeks. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.39 | 63.69 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 57.6 | α = 90 |
b = 82.9 | β = 90 |
c = 382.1 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
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 | MARMOSAIC 225 mm CCD | 2011-09-26 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID23-2 | 0.8726 | ESRF | ID23-2 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 3.58 | 50.502 | 98.9 | 4.1 | 7 | 22398 |
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 | 4CAS | 3.6 | 50.502 | 1.33 | 22020 | 1095 | 99.41 | 0.2442 | 0.2423 | 0.28 |
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 | 15.813 |
f_angle_d | 1.184 |
f_chiral_restr | 0.041 |
f_bond_d | 0.006 |
f_plane_restr | 0.005 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 9076 |
Nucleic Acid Atoms | |
Solvent Atoms | |
Heterogen Atoms | 805 |
Software
Software | |
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Software Name | Purpose |
PHENIX | refinement |
XDS | data reduction |