3M4O
RNA polymerase II elongation complex B
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1R9T | pdb entry 1R9T |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6 | 298 | 390mM (NH4)2HPO4/NaH2PO4, 50mM dioxane, 10mM DTT, 9-11% PEG6,000, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.62 | 66.02 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 168.114 | α = 90 |
b = 222.131 | β = 100.99 |
c = 191.782 | 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 | 77 | CCD | MARMOSAIC 325 mm CCD | 2008-06-09 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL11-1 | 0.979 | SSRL | BL11-1 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 3.57 | 40 | 92.3 | 0.166 | 6.3 | 2.5 | 74144 | 70340 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
3.57 | 3.66 | 92.7 | 0.716 | 1.4 | 2.3 |
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-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | pdb entry 1R9T | 3.57 | 40 | 70340 | 3681 | 90.5 | 0.24391 | 0.24138 | 0.29233 | RANDOM | 130.199 |
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] | |
1.69 | -2.21 | -1.65 | -0.88 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 39.565 |
r_dihedral_angle_3_deg | 23.706 |
r_dihedral_angle_4_deg | 20.522 |
r_dihedral_angle_1_deg | 7.611 |
r_scangle_it | 1.899 |
r_angle_refined_deg | 1.568 |
r_mcangle_it | 1.116 |
r_scbond_it | 1.054 |
r_mcbond_it | 0.613 |
r_chiral_restr | 0.105 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 28140 |
Nucleic Acid Atoms | 1069 |
Solvent Atoms | |
Heterogen Atoms | 18 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
MLPHARE | phasing |
REFMAC | refinement |
DENZO | data reduction |
HKL-2000 | data scaling |