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3D structure and atomic model of RS3 of mouse respiratory cilia
ELECTRON MICROSCOPY
Sample
RS3 from mouse respiratory cilia
Specimen Preparation
Sample Aggregation State
PARTICLE
Vitrification Instrument
Cryogen Name
ETHANE
Sample Vitrification Details
4 microliters of splayed axoneme sample were applied to glow-discharged Quantifoil R2/2 Cu grids. After removing excess liquid by blotting the grid fr ...
4 microliters of splayed axoneme sample were applied to glow-discharged Quantifoil R2/2 Cu grids. After removing excess liquid by blotting the grid from the backside with Whatman filter paper for 2-3 s, the grid was immediately plunge-frozen in liquid ethane using a home-made plunge freezer.
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
63152
Reported Resolution (Å)
4.7
Resolution Method
FSC 0.143 CUT-OFF
Other Details
The particles used for the head-neck is 37453, the resolution is 7.1. The particle used for the base-stalk is 63152, the resolution is 4.7.
Refinement Type
Symmetry Type
POINT
Point Symmetry
C1
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/Å**2)
60
Imaging Experiment
1
Date of Experiment
Temperature (Kelvin)
Microscope Model
FEI TITAN KRIOS
Minimum Defocus (nm)
1000
Maximum Defocus (nm)
3000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
2.7
Imaging Mode
BRIGHT FIELD
Specimen Holder Model
FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification
81000
Calibrated Magnification
Source
FIELD EMISSION GUN
Acceleration Voltage (kV)
300
Imaging Details
EM Software
Task
Software Package
Version
PARTICLE SELECTION
cryoSPARC
3.3.1
CTF CORRECTION
cryoSPARC
3.3.1
INITIAL EULER ASSIGNMENT
RELION
5
FINAL EULER ASSIGNMENT
RELION
5
CLASSIFICATION
RELION
5
RECONSTRUCTION
RELION
5
Image Processing
CTF Correction Type
CTF Correction Details
Number of Particles Selected
Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION
280000
particles containing RS3 were manually picked (using the conserved spacing of RSs as guide) centering on the A-tubule of the DMT