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Structure of a circMbl 48S translation initiation complex in the scanning state
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6ZMW experimental model PDB 1YFG
Sample 43S pre-initiation complex consisting of the 40S small ribosome subunit, eIF1, eIF1A, eIF2, eIF3 and initiator tRNA bound to circMbl-FLAG Sample Components 40S subunit eIF3 complex Ternary complex eIF2 complex Initiator tRNAi-Met
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK II Cryogen Name ETHANE Sample Vitrification Details Wait time: 30 s
Blot force: -3
Blot time: 4-5 s
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 21721 Reported Resolution (Å) 3.1 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (6ZMW, 1YFG) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 40
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1200 Maximum Defocus (nm) 2800 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 105000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 5.0 MODEL REFINEMENT PHENIX 1.21.2_5419 IMAGE ACQUISITION EPU CTF CORRECTION CTFFIND 4.1 INITIAL EULER ASSIGNMENT RELION 5.0 FINAL EULER ASSIGNMENT RELION 5.0 CLASSIFICATION RELION 5.0 RECONSTRUCTION RELION 5.0
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE 2272647