3P4B
Alternatingly modified 2'Fluoro RNA octamer f/rA2U2-P3
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 3P4A | PDB ENTRY 3P4A |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6 | 291 | Sodium cacodylate (40 mM, pH 6.0), sodium chloride (80 mM), barium chloride (20 mM), spermine tetrahydrochloride (12 mM), and 2-methyl-2,4-pentanediol (MPD; 10% (v/v)), equilibrated against a reservoir of MPD (1 mL, 35%), VAPOR DIFFUSION, HANGING DROP, temperature 291K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.18 | 43.55 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 43.383 | α = 90 |
b = 43.383 | β = 90 |
c = 60.987 | γ = 120 |
Symmetry | |
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Space Group | P 3 |
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 | 2008-11-17 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 21-ID-F | 0.97872 | APS | 21-ID-F |
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 | 1.45 | 50 | 98.5 | 0.07 | 39 | 5.2 | 22793 | 21294 |
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) | |||||||||||
1.45 | 1.48 | 81.8 | 0.42 | 1.34 | 2.6 | 1005 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | 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 | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 3P4A | 1.45 | 21.69 | 22442 | 21294 | 1141 | 100 | 0.19962 | 0.1971 | 0.25083 | RANDOM | 18.807 |
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] | |
0.8 | 0.4 | 0.8 | -1.2 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_scangle_it | 4.966 |
r_scbond_it | 4.153 |
r_rigid_bond_restr | 3.503 |
r_angle_refined_deg | 2.077 |
r_chiral_restr | 0.115 |
r_bond_refined_d | 0.021 |
r_gen_planes_refined | 0.01 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | |
Nucleic Acid Atoms | 1002 |
Solvent Atoms | 141 |
Heterogen Atoms | 2 |
Software
Software | |
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Software Name | Purpose |
MAR345dtb | data collection |
MOLREP | phasing |
CCP4 | model building |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
CCP4 | phasing |