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Initial contact of HIV-1 Env with CD4: Cryo-EM structure of BG505 DS-SOSIP trimer in complex with CD4 and antibody PGT145
Sample Ternary complex of BG505 DS-SOSIP, PGT145 and CD4 Sample Components HIV-1 trimer Antibody PGT145 CD4
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 55000 Reported Resolution (Å) 6.8 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol RIGID BODY FIT Refinement Target Correlation Coefficient Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 8.6
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 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 PARTICLE SELECTION DoG Picker IMAGE ACQUISITION Leginon 3.1 CTF CORRECTION Gctf MODEL FITTING UCSF Chimera 1.11.2 FINAL EULER ASSIGNMENT RELION 1.4 CLASSIFICATION RELION 1.4 RECONSTRUCTION RELION 1.4
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION