3PS0
The structure of the CRISPR-associated protein, csa2, from Sulfolobus solfataricus
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4 | 295 | 2.0 M SODIUM FORMATE, 0.1 M SODIUM ACETATE PH 4.0, 0.2 M SODIUM THIOCYANATE, VAPOR DIFFUSION, HANGING DROP, temperature 295K |
Crystal Properties | |
---|---|
Matthews coefficient | Solvent content |
2.46 | 49.95 |
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 74.642 | α = 90 |
b = 120.876 | β = 90 |
c = 158.056 | γ = 90 |
Symmetry | |
---|---|
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 | CCD | MARMOSAIC 325 mm CCD | FLAT COLLIMATING MIRROR, DOUBLE CRYSTAL MONOCHROMATOR, TOROID FOCUSING MIRROR | 2009-01-24 | M | MAD |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL9-2 | 0.95369, 1.04013, 1.03982, 0.96109 | SSRL | BL9-2 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 90 | 98.7 | 0.041 | 34.6 | 5.4 | 96002 | 3 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 2 | 2.05 | 100 | 0.457 | 2.7 | 5.5 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | 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 | MAD | THROUGHOUT | 2 | 33.75 | 91161 | 4790 | 98.7 | 0.185 | 0.183 | 0.221 | RANDOM | 45.841 |
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] | |
0.63 | -0.16 | -0.47 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 30.222 |
r_dihedral_angle_4_deg | 16.601 |
r_dihedral_angle_3_deg | 12.719 |
r_scangle_it | 11.665 |
r_scbond_it | 9.168 |
r_dihedral_angle_1_deg | 5.312 |
r_mcbond_it | 4.693 |
r_mcangle_it | 3.905 |
r_angle_refined_deg | 0.93 |
r_mcbond_other | 0.925 |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 8776 |
Nucleic Acid Atoms | |
Solvent Atoms | 545 |
Heterogen Atoms |
Software
Software | |
---|---|
Software Name | Purpose |
SOLVE | phasing |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |