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Crystal structure of a de novo designed parallel four-helix coiled coil, 2-EK-4
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7 293 0.1 M sodium propionate, 0.1 M sodium cacodylate trihydrate, 0.1 M bis-tris propane, 25% PEG1500, pH 7.0, supplemented with 25% glycerol for cryo-protection
Crystal Properties Matthews coefficient Solvent content 1.92 35.87
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 47.56 α = 90 b = 50.84 β = 90 c = 43.94 γ = 90
Symmetry Space Group C 2 2 2
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 PILATUS3 6M 2016-02-04 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON DIAMOND BEAMLINE I03 0.9763 Diamond I03
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 1.7 43.94 99.6 0.99 12.8 7.9 6093 19.73
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 1.7 1.73 100 0.978 1.9 7.7
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 1.7 43.94 1.35 6073 333 99.07 0.1843 0.1826 0.1843 0.2143 0.2151 28.34
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 9.1899 f_angle_d 0.7346 f_chiral_restr 0.0403 f_bond_d 0.0057 f_plane_restr 0.0029
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 488 Nucleic Acid Atoms Solvent Atoms 41 Heterogen Atoms 10
Software Software Software Name Purpose PHENIX refinement iMOSFLM data reduction Aimless data scaling PHASER phasing