4C2M
Structure of RNA polymerase I at 2.8 A resolution
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 7 | 10% PEG4000, 300MM AMMONIUM ACETATE, 50MM HEPES PH 7.5, 5MM TCEP |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.85 | 56.9 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 122.74 | α = 108.06 |
b = 139.02 | β = 95.4 |
c = 209.55 | γ = 93.85 |
Symmetry | |
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Space Group | P 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 | PIXEL | DECTRIS PILATUS 6M | M | SINGLE WAVELENGTH | |||||||
2 | 1 | x-ray | 100 | PIXEL | DECTRIS PILATUS 6M | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SLS BEAMLINE X10SA | SLS | X10SA | |
2 | SYNCHROTRON | SLS BEAMLINE X06SA | SLS | X06SA |
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 | 2.8 | 40 | 99.9 | 0.24 | 9.61 | 13.1 | 320814 | 1.5 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||||
1 | 2.8 | 2.87 | 99.8 | 1.52 | 11.5 |
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 (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MAD | NONE | 2.8 | 39.292 | 1.99 | 320815 | 6493 | 99.91 | 0.1697 | 0.1689 | 0.1806 | 0.2099 | 0.2185 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 16.318 |
f_angle_d | 1.241 |
f_chiral_restr | 0.084 |
f_bond_d | 0.01 |
f_plane_restr | 0.005 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 68821 |
Nucleic Acid Atoms | |
Solvent Atoms | 262 |
Heterogen Atoms | 24 |
Software
Software | |
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Software Name | Purpose |
XDS | data reduction |
XDS | data scaling |
autoSHARP | phasing |
PARROT | phasing |
PHENIX | refinement |