3GX7
Crystal structure of the T. tengcongensis SAM-I riboswitch variant U34C/A94G mutant A6C/U7G/A87C/U88G bound with SAM
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2GIS | pdb entry 2GIS |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7 | 303 | 15 mM barium chloride, 30 mM potassium chloride, 40 mM cacodylate, 10% MPD, 12 mM spermine-HCl, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 303K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.56 | 51.91 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 62.63 | α = 90 |
b = 62.63 | β = 90 |
c = 159.615 | γ = 90 |
Symmetry | |
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Space Group | P 43 21 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | IMAGE PLATE | RIGAKU RAXIS IV++ | 2009-02-12 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU RU200 | 1.54 |
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 | 2.95 | 20 | 99.6 | 0.068 | 13.3 | 6.66 | 7157 | 2 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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) | |||||||||||
2.95 | 3.06 | 100 | 0.439 | 3.7 | 6.81 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution 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 | pdb entry 2GIS | 2.95 | 19.952 | 0.04 | 7040 | 705 | 97.98 | 0.22 | 0.214 | 0.2708 | 80.7 |
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] | |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 29.184 |
f_angle_d | 1.889 |
f_chiral_restr | 0.171 |
f_plane_restr | 0.005 |
f_bond_d | 0.004 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | |
Nucleic Acid Atoms | 2032 |
Solvent Atoms | |
Heterogen Atoms | 33 |
Software
Software | |
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Software Name | Purpose |
CrystalClear | data collection |
PHENIX | model building |
PHENIX | refinement |
CrystalClear | data reduction |
CrystalClear | data scaling |
PHENIX | phasing |