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Cryo-EM structure of alpha 7 homo-tetradecamer
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 5DSV
Sample Proteasome subunit alpha type-7
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details Embedding Material Ice Embedding Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 18388 Reported Resolution (Å) 5.9 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry D7
Map-Model Fitting and Refinement Id 1 (5DSV) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value 531 Fitting Procedure Details
Data Acquisition Detector Type DIRECT ELECTRON DE-20 (5k x 3k) Electron Dose (electrons/Å**2) 40
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model JEOL 2200FS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 3000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 4.2 Imaging Mode BRIGHT FIELD Specimen Holder Model GATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER Nominal Magnification 40000 Calibrated Magnification 45065 Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.1 IMAGE ACQUISITION RELION 3.1 CTF CORRECTION CTFFIND 4 MODEL FITTING PHENIX INITIAL EULER ASSIGNMENT RELION 3.1 FINAL EULER ASSIGNMENT RELION 3.1 RECONSTRUCTION RELION 3.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING ONLY