9CZK | pdb_00009czk

Ca2+ free hSlo1 + beta2N-beta4 channel in nanodisc.

ELECTRON MICROSCOPY

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6V35

Sample
Ca2+ free BK channel complex of hSlo1 + beta2N-beta4 subunit
Sample Components
Inactivating beta2N-beta4 subunit chimera
hSlo1 channel

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	58904
Reported Resolution (Å)	3.5
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C4

Map-Model Fitting and Refinement
Id	1 (6v35)
Refinement Space	REAL
Refinement Protocol	RIGID BODY FIT
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)	47.08

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	TFS KRIOS
Minimum Defocus (nm)	500
Maximum Defocus (nm)	3000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode	BRIGHT FIELD
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	crYOLO
IMAGE ACQUISITION	Leginon	3.7
CTF CORRECTION	RELION	4.0.0
MODEL FITTING	Coot	0.8.9
MODEL REFINEMENT	PHENIX	1.21.1
INITIAL EULER ASSIGNMENT	RELION	4.0.0
FINAL EULER ASSIGNMENT	RELION	4.0.0
CLASSIFICATION	RELION	4.0.0
RECONSTRUCTION	RELION	4.0.0

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING ONLY