ELECTRON MICROSCOPY

Sample

96-nm repeat unit of doublet microtubules from the flagella of Chlamydomonas reinhardtii

Specimen Preperation
Sample Aggregation State FILAMENT
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details 2.5 microliters of splayed axoneme sample at 16-26 mg/mL were applied to glow-discharged C-Flat 1.2/1.3-4Cu grids at 100% humidity. The samples were then incubated 10 s, blotted for 10 s, and plunged into liquid ethane
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 261585
Reported Resolution (Å) 3.1
Resolution Method FSC 0.143 CUT-OFF
Other Details Map resolution varies from 3.1 to 16.7 A.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 61
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 500
Maximum Defocus (nm) 2000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification 64000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 3.1.1
IMAGE ACQUISITION SerialEM 3.6
CTF CORRECTION CTFFIND 4
MODEL FITTING Coot 0.9.4.1
MODEL FITTING UCSF ChimeraX 1.3
INITIAL EULER ASSIGNMENT RELION 3.1.1
FINAL EULER ASSIGNMENT RELION 3.1.1
MODEL REFINEMENT PHENIX 1.19.2-4158
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?