ISDA: 7KZM

ELECTRON MICROSCOPY

Sample

ODA complex

Specimen Preperation

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. 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

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/Å²)	61.48

Imaging Experiment

Date of Experiment	?
Temprature (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	?

Imaging Experiment

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.