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MicroED structure of proteinase K from a 95 nm thick lamella measured at 200 kV
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6CL7
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 67.95 α = 90 b = 67.95 β = 90 c = 102.31 γ = 90
Symmetry Space Group P 43 21 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 2020-11-14
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 2.35 20 86.6 0.349 0.386 0.159 0.968 3.64 5.5 49966 31.07
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) Rrim I (All) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 2.35 2.43 88.7 1.72 0.329
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model 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) Mean Isotropic B ELECTRON CRYSTALLOGRAPHY MOLECULAR REPLACEMENT FREE R-VALUE 6CL7 2.35 33.98 1.35 9126 448 86.85 0.2022 0.2001 0.2399 27.5
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 5.3587 f_angle_d 0.6745 f_chiral_restr 0.0427 f_bond_d 0.0036 f_plane_restr 0.0035
Software Software Software Name Purpose PHENIX refinement XDS data reduction XSCALE data scaling PHASER phasing
Specimen Preparation Sample Aggregation State 3D ARRAY Vitrification Instrument LEICA PLUNGER Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method CRYSTALLOGRAPHY Number of Particles Reported Resolution (Å) Resolution Method DIFFRACTION PATTERN/LAYERLINES Other Details Refinement Type Symmetry Type 3D CRYSTAL Space Group Name Length a 67.95 Length b 67.95 Length c 67.95 Angle Alpha 90 Angle Beta 90 Angle Gamma 90
Map-Model Fitting and Refinement Id 1 (6CL7) Refinement Space RECIPROCAL Refinement Protocol RIGID BODY FIT Refinement Target Maximum liklihood Overall B Value 29 Fitting Procedure Details
Data Acquisition Detector Type FEI CETA (4k x 4k) Electron Dose (electrons/Å**2) 0.01
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 Coot CRYSTALLOGRAPHY MERGING AIMLESS RECONSTRUCTION PHENIX MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE