Experiment: 7ZGO

Cryo-EM structure of human NKCC1 (TM domain)

ELECTRON MICROSCOPY

Starting Model(s)

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

Sample
Dimeric NKCC1 in complex with Na+, K+ and 2Cl-
Sample Components
NKCC1 in complex with Na+, K+ and 2Cl-
NKCC1 in complex with Na+, K+ and 2Cl-

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	3 uL sample was applied to the gold foil side of the grid and blotted iusing a blot force of 0 and blot time of 3-4 seconds before plunge- freezing in ...	3 uL sample was applied to the gold foil side of the grid and blotted iusing a blot force of 0 and blot time of 3-4 seconds before plunge- freezing into liquid ethane cooled by liquid nitrogen.

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	258791
Reported Resolution (Å)	2.55
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C2

Map-Model Fitting and Refinement
Id	1 (6NPL)
Refinement Space	REAL
Refinement Protocol	AB INITIO MODEL
Refinement Target
Overall B Value	61.44
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K3 BIOQUANTUM (6k x 4k)	GATAN K3 BIOQUANTUM (6k x 4k)	GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)	40.12	30.78	60.438

Imaging Experiment	1	2
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS	FEI TITAN KRIOS
Minimum Defocus (nm)	600	500
Maximum Defocus (nm)	1600	2400
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode	BRIGHT FIELD	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	165000	130000
Calibrated Magnification
Source	FIELD EMISSION GUN	FIELD EMISSION GUN
Acceleration Voltage (kV)	300	300
Imaging Details

EM Software
Task	Software Package	Version
CTF CORRECTION	RELION	3.1
MODEL FITTING	PHENIX
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	RELION	3.1
RECONSTRUCTION	cryoSPARC	3

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		1002976	Dataset 1: 1002976 particles Dataset 2: 1566691 Dataset 3: 2710603