Crystal structure of Csm3-Csm4 subcomplex in the type III-A CRISPR-Cas interference complex
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.8 | 293 | 50mM HEPES-Na (pH 6.8), 200mM potassium chrolide, 30% v/v Pentaerythritol propoxylate (5/4 PO/OH), VAPOR DIFFUSION, HANGING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.36 | 47.8 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 74.653 | α = 90 |
b = 96.319 | β = 90 |
c = 194.797 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
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 | 95 | CCD | ADSC QUANTUM 315r | 2012-06-11 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | PHOTON FACTORY BEAMLINE BL-17A | 0.98 | Photon Factory | BL-17A |
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 | 3.1 | 50 | 99.2 | 0.058 | 15.1 | 3.8 | 25906 |
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 | 3.1 | 3.29 | 99.4 | 0.557 | 2.7 | 3.9 | 30283 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | 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) | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | SAD | 3.105 | 43.46 | 1.37 | 25882 | 1296 | 99.32 | 0.2282 | 0.2251 | 0.23 | 0.2882 | 0.29 | RANDOM |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 13.112 |
f_angle_d | 0.704 |
f_chiral_restr | 0.029 |
f_bond_d | 0.003 |
f_plane_restr | 0.003 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 8020 |
Nucleic Acid Atoms | |
Solvent Atoms | |
Heterogen Atoms | 2 |
Software
Software | |
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Software Name | Purpose |
XDS | data scaling |
SHARP | phasing |
PHENIX | refinement |
XDS | data reduction |