Experiment: 9BTU

Human SCNN1B-SCNN1G ENaC dimers

ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6WTH

Refinement

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	11.911
f_angle_d	0.78
f_chiral_restr	0.046
f_bond_d	0.005
f_plane_restr	0.005

Sample
Amiloride-sensitive sodium channel subunits BETA, and GAMMA in complex with 10D4 Fab
Sample Components
Human beta subunit isoform 1
Human gamma subunit isoform 1
Fab fragment from 10D4 IgG

Specimen Preparation
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	248323
Reported Resolution (Å)	3.68
Resolution Method	FSC 0.5 CUT-OFF
Other Details	Local Resolution with one of the dimers and the Fabs masked out
Refinement Type
Symmetry Type	POINT

Map-Model Fitting and Refinement
Id	1 (6wth)
Refinement Space
Refinement Protocol	OTHER
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)	50

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)	800
Maximum Defocus (nm)	2500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2.7
Imaging Mode	DIFFRACTION
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	cryoSPARC	4.3.1
IMAGE ACQUISITION	SerialEM	unk
CTF CORRECTION	cryoSPARC	4.3.1
MODEL FITTING	PHENIX	1.2
MODEL REFINEMENT	ISOLDE	1.6
MODEL REFINEMENT	PHENIX	1.2
INITIAL EULER ASSIGNMENT	cryoSPARC	4.3.1
FINAL EULER ASSIGNMENT	cryoSPARC	4.3.1
CLASSIFICATION	cryoSPARC	4.3.1
RECONSTRUCTION	cryoSPARC	4.3.1

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		1121564	From blob picking in cryoSPARC with a box size of 440 with a maximum particle diameter of 250 and a minimum of 150. Minimum separation distance was 0.6 diameters