6X5Z
Bovine Cardiac Myosin in Complex with Chicken Skeletal Actin and Human Cardiac Tropomyosin in the Rigor State
ELECTRON MICROSCOPY
Sample |
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Helical complex of bovine S1 cardiac myosin and human cardiac tropomyosin-decorated chicken skeletal actin filaments |
Sample Components |
skeletal actin filaments |
S1 cardiac myosin |
cardiac tropomyosin |
Specimen Preparation | |
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Sample Aggregation State | HELICAL ARRAY |
Vitrification Instrument | FEI VITROBOT MARK III |
Cryogen Name | ETHANE |
Sample Vitrification Details | Thin filaments were reconstituted by first mixing F-actin and tropomyosin to final concentrations of 10 uM actin and 7 uM tropomyosin. Just before app ... |
3D Reconstruction | |
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Reconstruction Method | HELICAL |
Number of Particles | 32158 |
Reported Resolution (Å) | 4.24 |
Resolution Method | FSC 0.143 CUT-OFF |
Other Details | Performed in the Relion post-processing step |
Refinement Type | |
Symmetry Type | HELICAL |
Axial Symmetry | C1 |
Axial Rise | 27.5 |
Angular Rotation | -166.4 |
Map-Model Fitting and Refinement | |||||
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Id | 1 (6KN8, 3I5G) | 2 | 3 | ||
Refinement Space | REAL | REAL | REAL | ||
Refinement Protocol | FLEXIBLE FIT | OTHER | OTHER | ||
Refinement Target | |||||
Overall B Value | 70.88 | ||||
Fitting Procedure | flexible fitting | real space refinement | manual refinement | ||
Details | version 1.9.3; initial flexible fitting to align secondary structure using MDFF | version 1.18-3861 | manual refinement of residues to match backbone and sidechain density and to limit clashes, sidechain outliers, and Ramachandran outliers |
Data Acquisition | |||||||||
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Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 53 |
Imaging Experiment | 1 |
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Date of Experiment | |
Temperature (Kelvin) | |
Microscope Model | FEI TITAN KRIOS |
Minimum Defocus (nm) | 1500 |
Maximum Defocus (nm) | 2500 |
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 | 130000 |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details |
EM Software | ||
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Task | Software Package | Version |
PARTICLE SELECTION | RELION | 3.0.7 |
IMAGE ACQUISITION | EPU | |
CTF CORRECTION | CTFFIND | 4.1 |
INITIAL EULER ASSIGNMENT | RELION | 3.0.7 |
FINAL EULER ASSIGNMENT | RELION | 3.0.7 |
RECONSTRUCTION | RELION | |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
PHASE FLIPPING AND AMPLITUDE CORRECTION | 45040 |