ELECTRON MICROSCOPY

Sample

CalC6_3 with DHR extension

Specimen Preperation
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 67181
Reported Resolution (Å) 3.75
Resolution Method FSC 0.143 CUT-OFF
Other Details Non Uniform Refinement
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol AB INITIO MODEL
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details The design model was used as an initial reference for building the final cryo-EM structure. For the hexamer the design model of the CalC6_3 was used as an initial reference model fit with UCSF Chimera. Hexamer was refined using several rounds of relaxation and minimization, performed on the complete structures, which were manually inspected for errors each time using ISOLDE in UCSF ChimeraX, Coot, and PHENIX real-space refinement. The final model quality was analyzed using MolProbity.
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 47.32
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 800
Maximum Defocus (nm) 1800
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.7
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING UCSF Chimera ?
MODEL REFINEMENT UCSF ChimeraX ?
MODEL REFINEMENT ISOLDE ?
MODEL REFINEMENT Coot ?
MODEL REFINEMENT PHENIX ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?
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