3GVN
The 1.2 Angstroem crystal structure of an E.coli tRNASer acceptor stem microhelix reveals two magnesium binding sites
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2V6W |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 5.5 | 294 | 10% (v/v) MPD, 40mM sodium cacodylate, 20mM cobalt hexamine, 80mM sodium chloride, 20mM magnesium chloride, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.31 | 46.79 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 35.793 | α = 90 |
b = 39.126 | β = 111.08 |
c = 31.367 | 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 | MARRESEARCH | 2008-11-11 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ELETTRA BEAMLINE 5.2R | 1.000 | ELETTRA | 5.2R |
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 | 1.2 | 120 | 99.2 | 0.074 | 18.7 | 7.1 | 12806 |
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) | |||||||||||
1.2 | 1.22 | 99.1 | 0.154 | 1.8 | 8.6 | 8814 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 2v6w | 1.2 | 120 | 12806 | 4550 | 99.2 | 0.19 | 0.201 | Random |
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 | |
Nucleic Acid Atoms | 293 |
Solvent Atoms | 97 |
Heterogen Atoms | 2 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
PHASER | phasing |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |