4KM5

X-ray crystal structure of human cyclic GMP-AMP synthase (cGAS)


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.82910.044M 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
Matthews coefficientSolvent content
2.5752.09

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 46.454α = 90
b = 162.7β = 90
c = 58.407γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray77PIXELPSI PILATUS 6M2013-03-06MSINGLE WAVELENGTH
21x-ray291CCDADSC QUANTUM 315r2013-02-03MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL12-21.28180SSRLBL12-2
2SYNCHROTRONALS BEAMLINE 8.3.10.97920ALS8.3.1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.49947.44599.62967416035

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONSAD2.49947.4451.351597780099.50.22530.22450.2399
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
KeyRefinement Restraint Deviation
f_dihedral_angle_d14.726
f_angle_d0.661
f_chiral_restr0.054
f_bond_d0.003
f_plane_restr0.003
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2980
Nucleic Acid Atoms
Solvent Atoms36
Heterogen Atoms1

Software

Software
Software NamePurpose
Web-Icedata collection
PHENIXmodel building
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHENIXphasing