5BXY
Crystal structure of RNA methyltransferase from Salinibacter ruber in complex with S-Adenosyl-L-homocysteine
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8.5 | 289 | 0.2 ul of 15 mg/ml protein in 20 mM HEPES pH 7.5, 150 mM NaCl, 10% Glycerol, 0.1% Sodium Azide and 0.5 mM TCEP were mixed with 0.2 ul of the MCSG Suite 1 #23 (0.1M Tris, 20%w/v PEG 8K, 0.2M Magnesium Chloride, 6-Hydrate pH=8.5) and equilibrated against 1.5 M NaCl solution in 96 Well 3 drop Crystallization Plate (Swissci). Before crystallization protein was incubated with 1/50 v/v of 2 mg/ml chymotrypsin solution at 289 K for 3 hours |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.27 | 45.81 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 43.574 | α = 90 |
b = 86.04 | β = 90 |
c = 85.057 | 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 300 mm CCD | 2015-04-16 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 21-ID-G | 0.979 | APS | 21-ID-G |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym 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 | 1.75 | 50 | 94.8 | 0.099 | 0.099 | 17.8 | 5.1 | 31176 | -3 |
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 | 1.75 | 1.78 | 98.4 | 0.497 | 2.2 | 4.7 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | SAD | THROUGHOUT | 1.75 | 50 | 29629 | 1508 | 94.61 | 0.1503 | 0.1484 | 0.1882 | RANDOM | 20.852 |
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] | |
0.13 | -0.13 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 29.87 |
r_dihedral_angle_4_deg | 18.814 |
r_dihedral_angle_3_deg | 11.765 |
r_dihedral_angle_1_deg | 6.292 |
r_mcangle_it | 4.481 |
r_mcbond_it | 4.007 |
r_mcbond_other | 3.98 |
r_angle_refined_deg | 1.598 |
r_angle_other_deg | 1.206 |
r_chiral_restr | 0.089 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2348 |
Nucleic Acid Atoms | |
Solvent Atoms | 341 |
Heterogen Atoms | 56 |
Software
Software | |
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Software Name | Purpose |
SBC-Collect | data collection |
HKL-2000 | data scaling |
SCALEPACK | data scaling |
HKL-3000 | data reduction |
MLPHARE | phasing |
HKL-3000 | phasing |
DM | phasing |
SHELX | phasing |
PDB_EXTRACT | data extraction |
REFMAC | refinement |
Coot | model building |