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MicroED structure of proteinase K from an uncoated, single lamella at 2.17A resolution (#2)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6CL7
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 67.33 α = 90 b = 67.33 β = 90 c = 104.91 γ = 90
Symmetry Space Group P 43 21 2
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-Free (Depositor) R-Free Selection Details Mean Isotropic B ELECTRON CRYSTALLOGRAPHY THROUGHOUT 2.17 2.17 1.33 10065 1100 71.26 0.2229 0.2198 0.2654 Copied from 6CL7
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 3.45 f_angle_d 0.65 f_chiral_restr 0.042 f_bond_d 0.008 f_plane_restr 0.003
Software Software Software Name Purpose PHENIX refinement
Specimen Preparation Sample Aggregation State 3D ARRAY Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method CRYSTALLOGRAPHY Number of Particles Reported Resolution (Å) 2.17 Resolution Method DIFFRACTION PATTERN/LAYERLINES Other Details Refinement Type Symmetry Type 3D CRYSTAL Space Group Name Length a 67.3 Length b 67.3 Length c 67.3 Angle Alpha 90 Angle Beta 90 Angle Gamma 90
Map-Model Fitting and Refinement Id 1 (6CL7) Refinement Space RECIPROCAL Refinement Protocol OTHER Refinement Target Overall B Value 31.42 Fitting Procedure Details
Data Acquisition Detector Type FEI CETA (4k x 4k) Electron Dose (electrons/Å**2) 0.03
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TALOS ARCTICA Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode DIFFRACTION Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version MODEL FITTING PHENIX 1.15 MODEL REFINEMENT PHENIX 1.15 MOLECULAR REPLACEMENT PHENIX 2.8.2 RECONSTRUCTION PHENIX 1.15.2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE