6W6L

Cryo-EM structure of the human ribosome-TMCO1 translocon

ELECTRON MICROSCOPY

Sample
human ribosome-TMCO1 translocon

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	Two filter papers were added to each arm, 2.5 microliters of sample were added to the grids, and 0.5 seconds of drain time was allowed before vitrific ...	Two filter papers were added to each arm, 2.5 microliters of sample were added to the grids, and 0.5 seconds of drain time was allowed before vitrification.

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	82684
Reported Resolution (Å)	3.84
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1 (6OM0, 6FTI, 5A63)
Refinement Space	REAL
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details	Starting models: 60S ribosomal subunit, tRNAs and nascent chain from 6om0. Sec61 heterotrimer from 6fti. Nicalin, TMEM147 are iTasser homology mode ...	Starting models: 60S ribosomal subunit, tRNAs and nascent chain from 6om0. Sec61 heterotrimer from 6fti. Nicalin, TMEM147 are iTasser homology models based on 5a63. TMCO1 and CCDC47 are co-evolution-based models from RaptorX-Contact.

Data Acquisition
Detector Type	GATAN K3 (6k 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
Nominal Magnification
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
IMAGE ACQUISITION	Latitude
CTF CORRECTION	Gctf	0.5
MODEL FITTING	UCSF Chimera	1.13.1
MODEL FITTING	Coot	0.9-pre
MODEL REFINEMENT	PHENIX	1.18rc1-3777
INITIAL EULER ASSIGNMENT	RELION	3.1
FINAL EULER ASSIGNMENT	RELION	3.1
CLASSIFICATION	RELION	3.1
RECONSTRUCTION	RELION	3.1

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		1049128

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.