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Purified hASIC1a-Mamba1 complex (3 ul) at a concentration of 3.1 mg/ml was added to the freshly plasma-cleaned holey carbon grid (Quantifol, R1.2/1.3, ...
Purified hASIC1a-Mamba1 complex (3 ul) at a concentration of 3.1 mg/ml was added to the freshly plasma-cleaned holey carbon grid (Quantifol, R1.2/1.3, 300 mesh, Cu), blotted for 5 s at 100% humidity with a Vitrobot Mark IV (ThermoFisher Scientific) and plunge frozen into liquid ethane cooled by liquid nitrogen.
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
119901
Reported Resolution (Å)
3.9
Resolution Method
FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type
POINT
Map-Model Fitting and Refinement
Id
1 (6AVE)
Refinement Space
Refinement Protocol
FLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector Type
GATAN K2 SUMMIT (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)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
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
Grids were transferred to a Titan Krios electron microscope (FEI) operated at 300 kV equipped with a Gatan K2 Summit direct detection camera. Images of hASIC1a-Mamba1 complex was collected using the automated image acquisition software SerialEM in counting mode with 29,000x magnification yielding a pixel size of 1.014 A. The total dose of 50 e-/A2 was fractionated to 40 frames with 0.2 s per frame. Nominal defocus values ranged from -1.8 to -2.5 um. The dataset of hASIC1a included 3,364 micrographs.