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Crystal structure of the CFTR inhibitory factor Cif with the S179A mutation
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 10% (w/v) PEG 8000, 125 mM calcium chloride, 100 mM sodium acetate, pH 5.0
Crystal Properties Matthews coefficient Solvent content 2.35 47.58
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 168.508 α = 90 b = 84.251 β = 100.5 c = 89.453 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 EIGER2 XE 9M 2026-07-31 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS-II BEAMLINE 19-ID 0.9786 NSLS-II 19-ID
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 1.66 46.19 99.8 0.1291 0.148 0.07135 0.994 6.95 4.3 144790 20.2
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 1.66 1.72 99.74 0.9485 1.101 0.5491 0.481 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 1.66 46.19 1.35 144768 7230 99.8 0.1765 0.1753 0.1753 0.2001 0.2001 21.72
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 13.453 f_angle_d 0.9263 f_chiral_restr 0.0583 f_plane_restr 0.0095 f_bond_d 0.0081
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 9388 Nucleic Acid Atoms Solvent Atoms 1328 Heterogen Atoms 13
Software Software Software Name Purpose PHENIX refinement XDS data reduction XSCALE data scaling PHASER phasing Coot model building