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Crystal structure of the E153Q/S179G mutant of the CFTR inhibitory factor Cif containing the adducted S-Styrene oxide hydrolysis intermediate
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3KD2
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 5 291 15.5% (w/v) PEG 8000, 125 mM calcium chloride, 100 mM sodium acetate pH 5.0, 2 mM S-styrene oxide, 2% (v/v) DMSO
Crystal Properties Matthews coefficient Solvent content 2.33 47.27
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 168.274 α = 90 b = 83.769 β = 100.353 c = 89.47 γ = 90
Symmetry Space Group C 1 2 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 PIXEL DECTRIS EIGER X 16M Horizontal pre-focus bimorph mirror & KB bimorph mirrors 2025-12-17 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS-II BEAMLINE 17-ID-2 0.97934 NSLS-II 17-ID-2
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) Rpim I (All) 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 1.85 42.12 98.54 0.136 0.1577 0.07793 0.993 6.64 3.8 102802 20.81
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) Rpim I (All) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.85 1.92 99.68 0.8043 0.9338 0.4642 0.634 1.8 3.9
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 1.85 42.12 1.35 102788 5139 98.54 0.1872 0.1856 0.1857 0.2185 0.2187 22.79
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 13.6717 f_angle_d 0.8601 f_chiral_restr 0.0529 f_plane_restr 0.0076 f_bond_d 0.0073
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 9408 Nucleic Acid Atoms Solvent Atoms 859 Heterogen Atoms 41
Software Software Software Name Purpose PHENIX refinement XDS data reduction XSCALE data scaling PHASER phasing Coot model building