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Low-resolution (5.4 angstrom) cryo-EM structure of SV2B-BoNT/A1 at pH 5.5
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 9F1R experimental model PDB 9F2Y
Sample SV2B-BoNT/A1 complex at pH 5.5 Sample Components Synaptic vesicle glycoprotein 2B Botulinum neurotoxin type A
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 187001 Reported Resolution (Å) 5.41 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (9F1R, 9F2Y) Refinement Space Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details The SV2B transmembrane domain from PDB ID: 951R and SV2B-LD-BoNT/A1 complex from PDB: 9F2Y were docked and refined on low resolution map
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 600 Maximum Defocus (nm) 2400 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL FITTING Coot MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION