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MicroED structure of Proteinase K from nitrogen milled lamellae
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 67.12 α = 90 b = 67.12 β = 90 c = 106.87 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) Mean Isotropic B ELECTRON CRYSTALLOGRAPHY FREE R-VALUE 1.8 19.75 1.34 23263 1142 99.79 0.17 0.1679 0.2121 19.42
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 5.3875 f_angle_d 0.6177 f_chiral_restr 0.0438 f_plane_restr 0.0042 f_bond_d 0.0039
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2031 Nucleic Acid Atoms Solvent Atoms 237 Heterogen Atoms 2
Software Software Software Name Purpose phenix.refine refinement PHENIX refinement
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) 1.8 Resolution Method DIFFRACTION PATTERN/LAYERLINES Other Details Refinement Type Symmetry Type 3D CRYSTAL Space Group Name Length a 67.12 Length b 67.12 Length c 67.12 Angle Alpha 90 Angle Beta 90 Angle Gamma 90
Map-Model Fitting and Refinement Id 1 Refinement Space RECIPROCAL Refinement Protocol AB INITIO MODEL Refinement Target Maximum likelihood Overall B Value 8.17 Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 0.001
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode DIFFRACTION Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version CRYSTALLOGRAPHY MERGING AIMLESS
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE