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Mouse cGAS in complex with DNA and ATP, crystallized in presence of Ap4A.
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 50 mM Calcium acetate, 100 mM Imidazole pH 8.0, 30-35% (v/v) 2-Ethoxyethanol ; added to 250 uM cGAS protein, 300 uM DNA, 2 mM Ap4A, 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 2.57 52.16
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 78.03 α = 90 b = 98.94 β = 90 c = 143.03 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 EIGER2 X 9M 2025-09-30 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID23-2 0.873128 ESRF ID23-2
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 2.7 46.75 99.9 0.998 11.37 13.43 31264 75.42
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 2.7 2.86 0.528 1.44
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 2.7 40.68 1.35 31249 1563 99.92 0.2306 0.2289 0.2287 0.2633 0.2632 90.73
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 21.3132 f_angle_d 0.7528 f_chiral_restr 0.0457 f_plane_restr 0.0055 f_bond_d 0.0047
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 5717 Nucleic Acid Atoms 1464 Solvent Atoms Heterogen Atoms 68
Software Software Software Name Purpose PHENIX refinement XDS data reduction XDS data scaling PHASER phasing