6UTW
E. coli sigma-S transcription initiation complex with a 4-nt RNA ("Fresh" crystal)
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 5IPL |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8 | 295 | PEG3350, sodium chloride, HEPES |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.75 | 55.27 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 132.99 | α = 90 |
b = 155.447 | β = 90 |
c = 234.735 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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-F | 2017-06-09 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 24-ID-E | 0.97918 | APS | 24-ID-E |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | CC (Half) | 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 | 3.85 | 49.4 | 93.7 | 0.999 | 8.85 | 3.54 | 43708 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 3.85 | 4.09 | 90.2 | 0.193 | 0.49 | 3.25 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 (All) | R-Work | R-Free | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | 5IPL | 3.854 | 49.396 | 43241 | 2059 | 92.643 | 0.271 | 0.2683 | 0.3293 | 237.76 |
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] | |
0.2 | 0.307 | -0.507 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_lrange_other | 32.191 |
r_lrange_it | 32.19 |
r_dihedral_angle_2_deg | 22.44 |
r_mcangle_it | 19.397 |
r_mcangle_other | 19.397 |
r_scangle_other | 16.907 |
r_scangle_it | 16.906 |
r_dihedral_angle_3_deg | 16.588 |
r_dihedral_angle_4_deg | 16.432 |
r_mcbond_it | 11.81 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 27572 |
Nucleic Acid Atoms | 1493 |
Solvent Atoms | |
Heterogen Atoms | 13 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
XDS | data reduction |
XDS | data scaling |
PHASER | phasing |