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Mouse cGAS in complex with DNA and pppGpA, crystallized in presence of Ap4G.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7UTT
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 293.15 Solution of 0.1M HEPES pH 6.5, 30-35% (v/v) MPD ; added to 250 uM cGAS protein, 300 uM DNA, 2 mM Ap4G, in 20 mM Tris-HCL pH 7.5, 0.5 mM TCEP, 150 mM NaCl, 5 mM MgCl2 in a 1 to 1 or 1 to 2 ratio.
Crystal Properties Matthews coefficient Solvent content 2.55 51.81
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 78.18 α = 90 b = 98.68 β = 90 c = 142.1 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 90 PIXEL DECTRIS EIGER X 16M 2025-10-24 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON PETRA III, EMBL c/o DESY BEAMLINE P13 (MX1) 0.9762 PETRA III, EMBL c/o DESY P13 (MX1)
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) CC (Half) 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 2.56 49.34 99.9 0.991 8.37 13.61 36121 63.17
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.56 2.71 0.571 1.61
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation 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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 2.56 49.34 1.37 36113 1805 99.9 0.2179 0.2166 0.2168 0.2437 0.244 65.81
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 21.1898 f_angle_d 0.5991 f_chiral_restr 0.038 f_plane_restr 0.0043 f_bond_d 0.0031
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 5746 Nucleic Acid Atoms 1464 Solvent Atoms 25 Heterogen Atoms 114
Software Software Software Name Purpose PHENIX refinement XDS data reduction XDS data scaling PHASER phasing