☰ Navigation Tabs
Cryo-EM structures of the actin:tropomyosin filament reveal the mechanism for the transition from C- to M-state
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4A7F
Sample F-actin/tropomyosin
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details 3 second blot before plunging into liquid ethane (FEI Vitrobot Mark IV)
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 224337 Reported Resolution (Å) 8 Resolution Method FSC 0.5 CUT-OFF Other Details Refinement Type Symmetry Type HELICAL Axial Symmetry C1 Axial Rise 28 Angular Rotation 167
Map-Model Fitting and Refinement Id 1 (4A7F, 4A7F, 4A7F, 4A7F, 4A7F, 4A7F, 4A7F) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Cross correlation Overall B Value Fitting Procedure Details REFINEMENT PROTOCOL--RIGID BODY DETAILS--The F-actin and tropomyosin were
fitted separately.
Data Acquisition Detector Type GATAN ULTRASCAN 4000 (4k x 4k) Electron Dose (electrons/Å**2) 30
Imaging Experiment 1 Date of Experiment 2010-03-02 Temperature (Kelvin) 90 Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1500 Maximum Defocus (nm) 4000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 59000 Calibrated Magnification 101555 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL FITTING UCSF Chimera RECONSTRUCTION EMAN RECONSTRUCTION MATLAB RECONSTRUCTION SPIDER
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details individual images