ELECTRON MICROSCOPY

Sample

RNA polymerase I pre-initiation complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK II
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 38589
Reported Resolution (Å) 4.4
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol FLEXIBLE FIT
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details PLEASE NOTE: This entry represents a model built based on a 4.4 Angstrom cryo-EM map. Due to the limited resolution, the sequence in several regions of Rrn6, Rrn7, and Rrn11 subunits is only tentatively assigned and may contain sequence register shifts. To account for these uncertainties, the coordinates of the Core Factor subunits Rrn6, Rrn7, and Rrn11 subunits in this entry only contain backbone atoms and unassigned helices located in the EM density are built as poly-alanines. For more details regarding the model and its limitations please refer to the publication (Sadian et al., EMBO J, 2017) associated with this entry.
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) ?
Maximum Defocus (nm) ?
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 ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?
Feedback Form
Name
Email
Institute
Feedback