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Cryo-EM structure of the human cardiac myosin filament
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 5N69 experimental model PDB 2FXO in silico model AlphaFold AF-P12883-F1-model_v1 in silico model AlphaFold AF-P10916-F1-model_v3 in silico model AlphaFold Q8WZ42
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 5.0937 f_angle_d 0.6869 f_chiral_restr 0.0406 f_bond_d 0.0055 f_plane_restr 0.0051
Sample Myosin filaments isolated from human cardiac left ventricular muscle
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 102581 Reported Resolution (Å) 6.4 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C3
Map-Model Fitting and Refinement Id Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details 1 () REAL FLEXIBLE FIT 2 (5N69, 2FXO, , , ) 3 (5N69, 2FXO, , , ) 4 (5N69, 2FXO, , , ) 5 (5N69, 2FXO, , , ) 6 (5N69, 2FXO, , , )
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 61
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN 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 Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version CTF CORRECTION cryoSPARC 3.3.2 MODEL FITTING UCSF ChimeraX 1.4 MODEL FITTING MDFF MODEL FITTING Coot 0.9.5 MODEL FITTING ISOLDE 1.4 INITIAL EULER ASSIGNMENT cryoSPARC 3.3.2 FINAL EULER ASSIGNMENT cryoSPARC 3.3.2 MODEL REFINEMENT PHENIX 1.19.2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION