1MSW
Structural basis for the transition from initiation to elongation transcription in T7 RNA polymerase
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7 | 294 | PEG 8000, LiSO4, Mg(OAc)2, Tris-HCL, pH 7.0, VAPOR DIFFUSION, HANGING DROP at 294K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.32 | 62.94 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 142.91 | α = 90 |
b = 145.46 | β = 90 |
c = 145.6 | γ = 90 |
Symmetry | |
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Space Group | C 2 2 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 | CCD | ADSC QUANTUM 4 | M | SINGLE WAVELENGTH | |||||||
2 | 1 | 100 |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 19-ID | 0.9790 | APS | 19-ID |
2 | SYNCHROTRON | NSLS BEAMLINE X25 | 1.050 | NSLS | X25 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 2.1 | 20 | 85 | 61181 | 61181 | 24.4 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | 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 | MAD | THROUGHOUT | 2.1 | 20 | 61181 | 61181 | 4894 | 85 | 0.241 | 0.241 | 0.275 | RANDOM | 76.1 |
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] | |
-16.03 | 33 | -16.96 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 21 |
c_scangle_it | 3.03 |
c_mcangle_it | 2.38 |
c_scbond_it | 1.93 |
c_mcbond_it | 1.39 |
c_angle_deg | 1.3 |
c_improper_angle_d | 1.29 |
c_bond_d | 0.008 |
c_bond_d_na | |
c_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 6802 |
Nucleic Acid Atoms | 964 |
Solvent Atoms | 190 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
CNS | phasing |