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Crystal structure of a de novo designed parallel four-helix coiled coil, 3-EK-4
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7.5 293 0.1 M sodium HEPES, 0.2 sodium citrate tribasic dihydrate, 20 % 2-propanol, pH 7.5, supplemented with 25% glycerol for cryo-protection
Crystal Properties Matthews coefficient Solvent content 1.88 34.49
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 29.46 α = 90 b = 48.55 β = 96.19 c = 36.57 γ = 90
Symmetry Space Group P 1 21 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 PILATUS 6M 2017-05-14 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON DIAMOND BEAMLINE I04 0.9795 Diamond I04
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 1.11 48.55 94.5 0.998 12.7 6.1 38599 12.88
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 1.11 1.12 90.6 0.629 1.9 5.4
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 1.11 29.29 1.38 38546 3797 94.18 0.1674 0.1639 0.1649 0.1994 0.201 20.42
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 9.9085 f_angle_d 0.6178 f_chiral_restr 0.0439 f_bond_d 0.0045 f_plane_restr 0.0026
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 977 Nucleic Acid Atoms Solvent Atoms 134 Heterogen Atoms
Software Software Software Name Purpose PHENIX refinement iMOSFLM data reduction Aimless data scaling PHASER phasing