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Outer dynein arm bound to doublet microtubules from C. reinhardtii
ELECTRON MICROSCOPY
Sample
ODA complex
Specimen Preparation
Sample Aggregation State
FILAMENT
Vitrification Instrument
FEI VITROBOT MARK IV
Cryogen Name
ETHANE
Sample Vitrification Details
2.5 ul of splayed axoneme solution was then dispensed onto glow-discharged C-Flat 1.2/1.3-4Cu grids inside a Vitrobot Mark IV under 100% humidity. Aft ...
2.5 ul of splayed axoneme solution was then dispensed onto glow-discharged C-Flat 1.2/1.3-4Cu grids inside a Vitrobot Mark IV under 100% humidity. After a 10 s delay time, cryo-EM samples were prepared by first blotting for 10 s with blot force set to 16 and immediately plunged into liquid ethane.
3D Reconstruction
Reconstruction Method
HELICAL
Number of Particles
485694
Reported Resolution (Å)
7.5
Resolution Method
FSC 0.143 CUT-OFF
Other Details
The composite map varies in resolution from 3.5 to 12 A. The reference map is 7.5 A.
Refinement Type
Symmetry Type
HELICAL
Axial Symmetry
C1
Axial Rise
82
Angular Rotation
Map-Model Fitting and Refinement
Id
1
Refinement Space
REAL
Refinement Protocol
OTHER
Refinement Target
Correlation coefficient
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector Type
GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)
61.48
Imaging Experiment
1
Date of Experiment
Temperature (Kelvin)
Microscope Model
TFS KRIOS
Minimum Defocus (nm)
Maximum Defocus (nm)
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
Calibrated Magnification
Source
FIELD EMISSION GUN
Acceleration Voltage (kV)
300
Imaging Details
EM Software
Task
Software Package
Version
PARTICLE SELECTION
RELION
3.1
IMAGE ACQUISITION
SerialEM
3.6 and 3.7
CTF CORRECTION
CTFFIND
4
MODEL FITTING
Coot
0.9.1
MODEL REFINEMENT
PHENIX
1.18.2
INITIAL EULER ASSIGNMENT
RELION
3.1
FINAL EULER ASSIGNMENT
RELION
3.1
CLASSIFICATION
RELION
3.1
RECONSTRUCTION
RELION
3.1
Image Processing
CTF Correction Type
CTF Correction Details
Number of Particles Selected
Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION
The composite map was assembled on a box 700 reference map (7.5 A) using the ODA-DC and ODA core composite maps (deposited separately), and maps targeting the aHC AAA+ domain (4.5 A), bHC AAA+ domain (6.2 A), aHC AAA+ domain (11.4 A), and aHC tail domain (5.3 A). A second conformation of bHC AAA+ domain (9.8 A) is also provided.