3JCG

ELECTRON MICROSCOPY

Sample

CorA from Thermotoga maritima in the absence of magnesium, state I

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument LEICA EM GP
Cryogen Name ETHANE
Sample Vitrification Details Grids were blotted at 4 degrees Celsius for 7 seconds after a 10-second pre-blotting period, then plunge-frozen in liquid ethane.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 26271
Reported Resolution (Å) 7.06
Resolution Method FSC 0.143 CUT-OFF
Other Details Final maps were calculated from two merged datasets. (Single particle details: The particles were selected using an automatic selection program. 3D classification, 3D refinement, and postprocessing were done using RELION 1.3.) (Single particle--Applied symmetry: C1)
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 QUANTUM (4k x 4k)
Electron Dose (electrons/Å2) 40
Imaging Experiment
Date of Experiment 2014-10-15
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 890
Maximum Defocus (nm) 2700
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 105000
Calibrated Magnification 105000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details Parallel beam illumination
Imaging Experiment
Task Software Package Version
MODEL FITTING Coot ?
MODEL FITTING PHENIX ?
MODEL FITTING UCSF Chimera ?
RECONSTRUCTION RELION ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. CTF parameters obtained from whole micrograph