4KM5
X-ray crystal structure of human cyclic GMP-AMP synthase (cGAS)
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.8 | 291 | 0.044M potassium chloride, 0.01M magnesium chloride, 0.025M Tris pH 7.0, 0.015M Tris pH 9.0, 6.9% PEG 6000, VAPOR DIFFUSION, HANGING DROP, temperature 291K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.57 | 52.09 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 46.454 | α = 90 |
b = 162.7 | β = 90 |
c = 58.407 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 77 | PIXEL | PSI PILATUS 6M | 2013-03-06 | M | SINGLE WAVELENGTH | ||||||
2 | 1 | x-ray | 291 | CCD | ADSC QUANTUM 315r | 2013-02-03 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL12-2 | 1.28180 | SSRL | BL12-2 |
2 | SYNCHROTRON | ALS BEAMLINE 8.3.1 | 0.97920 | ALS | 8.3.1 |
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 | 2.499 | 47.445 | 99.6 | 29674 | 16035 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | R-Free | Mean Isotropic B | ||||||||
X-RAY DIFFRACTION | SAD | 2.499 | 47.445 | 1.35 | 15977 | 800 | 99.5 | 0.2253 | 0.2245 | 0.2399 |
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] | |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 14.726 |
f_angle_d | 0.661 |
f_chiral_restr | 0.054 |
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 | 2980 |
Nucleic Acid Atoms | |
Solvent Atoms | 36 |
Heterogen Atoms | 1 |
Software
Software | |
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Software Name | Purpose |
Web-Ice | data collection |
PHENIX | model building |
PHENIX | refinement |
XDS | data reduction |
SCALA | data scaling |
PHENIX | phasing |