3ZXA
Structure and Assembly of Turnip Crinkle Virus I. X-ray Crystallographic Structure Analysis at 3.2 A Resolution
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 7 | THE METHYL MERCURY ADDUCT WAS OBTAINED BY BRINGING STOCK SOLUTION OF VIRUS (3.5% TCV (W/V) IN 0.01% SODIUM AZIDE,) TO 6 EQUIVALENT METHYL MERCURY/PROTEIN SUBUNIT BY ADDITION OF 15 MILLIMOLAR-METHYL MERCURY NITRATE AND INCUBATING FOR 1 H. CRYSTALLIZATION WAS THEN INITIATED BY ADDITION OF AN APPROXIMATELY EQUAL VOLUME OF SATURATED SODIUM CITRATE (PH 7.0) AND ALLOWED TO PROCEED UNDISTURBED FOR 2 TO 4 MONTHS. THE OPTIMUM CONCENTRATION OF SODIUM CITRATE REQUIRED TO PRODUCE LARGE CRYSTALS VARIED FROM EXPERIMENT TO EXPERIMENT BUT WAS GENERALLY IN THE RANGE 42 TO 46% SATURATED. |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 348.8 | α = 90 |
b = 379.1 | β = 90 |
c = 397.4 | γ = 90 |
Symmetry | |
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Space Group | I 2 2 2 |
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 | 293 | FILM | KODAK NO-SCREEN X-RAY FILM | FRANKS MIRROR OPTICS | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | ELLIOTT GX-6 | 1.5418 |
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 | 3.2 | 100 | 73 | 0.18 | 2.2 | 310000 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||||
1 | 3.2 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | Mean Isotropic B | |||||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | TBSV | 3.2 | 100 | 680000 |
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] | |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2237 |
Nucleic Acid Atoms | |
Solvent Atoms | |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
OPTRONICS | data reduction |
DIGITAL | data reduction |
SCAN12 | data reduction |
HARVARD | data scaling |
COMBINE | phasing |
FFT | phasing |
BILDER | refinement |