ELECTRON MICROSCOPY

Sample

Saccharomyces cerevisiae spliceosome. Complex C just after Prp16-mediated remodeling

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK III
Cryogen Name ETHANE
Sample Vitrification Details 3.5 microlitres sample were applied to the grid, left for 25 seconds and then blotted for 3.0-3.5 seconds before plunging.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 29527
Reported Resolution (Å) 4.17
Resolution Method FSC 0.143 CUT-OFF
Other Details A 3D reconstruction was obtained after refinement of a subset of particles obtained by classification with a mask around Prp22.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space RECIPROCAL
Refinement Protocol FLEXIBLE FIT
Refinement Target Fourier Shell Correlation
Overall B Value 330
Fitting Procedure ?
Details Used secondary structure restraints generated in ProSMART and LibG.
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 2
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 500
Maximum Defocus (nm) 4500
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification 81000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details GIF Quantum energy filter, 20 eV slit width
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 1.4
CTF CORRECTION CTFFIND 4
MODEL FITTING Coot 0.8.3
MODEL REFINEMENT REFMAC 5.8
INITIAL EULER ASSIGNMENT RELION 1.4
FINAL EULER ASSIGNMENT RELION 1.4
CLASSIFICATION RELION 1.4
RECONSTRUCTION RELION 1.4
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?