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Cryo-EM structure of human beta-cardiac myosin in the interacting-heads motif and S2-FH undocked state
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 8ACT experimental model PDB 2FXM
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 4.904 f_angle_d 0.54 f_chiral_restr 0.036 f_plane_restr 0.004 f_bond_d 0.003
Sample Human beta-cardiac myosin in the interacting-heads motif and S2-FH undocked state Sample Components Myosin-7 Myosin light chain 1/3 and Myosin regulatory light chain 11
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 69575 Reported Resolution (Å) 3.2 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (8ACT) 2 (2FXM) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 49.5
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD 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 PARTICLE SELECTION cryoSPARC PARTICLE SELECTION Topaz CTF CORRECTION cryoSPARC MODEL FITTING UCSF ChimeraX MODEL FITTING MDFF MODEL FITTING Coot INITIAL EULER ASSIGNMENT cryoSPARC FINAL EULER ASSIGNMENT cryoSPARC CLASSIFICATION cryoSPARC RECONSTRUCTION cryoSPARC MODEL REFINEMENT PHENIX 1.20.1_4487 MODEL REFINEMENT PHENIX 1.20.1_4487
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION