ELECTRON MICROSCOPY

Sample

Ligand bound state of a brocolli-pepper aptamer FRET tile

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument LEICA EM GP
Cryogen Name ETHANE
Sample Vitrification Details 3 uL sample, blotted onto double layer of whatman filter paper for 6 seconds.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 150204
Reported Resolution (Å) 4.43
Resolution Method FSC 0.143 CUT-OFF
Other Details Local refinement was performed using a mask covering the entire volume.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol FLEXIBLE FIT
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 60
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 700
Maximum Defocus (nm) 2000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.7
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
CTF CORRECTION cryoSPARC 3
MODEL FITTING UCSF ChimeraX ?
INITIAL EULER ASSIGNMENT cryoSPARC 3
FINAL EULER ASSIGNMENT cryoSPARC 3
CLASSIFICATION cryoSPARC 3
RECONSTRUCTION cryoSPARC 3
MODEL REFINEMENT PHENIX ?
MODEL REFINEMENT ISOLDE ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?