4UQ8

Electron cryo-microscopy of bovine Complex I

ELECTRON MICROSCOPY

Sample
NADH-UBIQUINONE OXIDOREDUCTASE

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument
Cryogen Name	ETHANE
Sample Vitrification Details	VITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 100, TEMPERATURE- 100, INSTRUMENT- OTHER, METHOD- THE SPECIMEN WAS VITRIFIED IN AN ENVIRONMENTAL PLUNGE- ...	VITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 100, TEMPERATURE- 100, INSTRUMENT- OTHER, METHOD- THE SPECIMEN WAS VITRIFIED IN AN ENVIRONMENTAL PLUNGE-FREEZE APPARATUS (BELLARE ET AL, J.ELECTR. MICROS. TECH., 1988, 10, 87-111). BLOT FOR 15- 18 SECONDS AFTER THE DIAMETER OF THE BLOTTED MENISCUS CEASES TO EXPAND AND PLUNGED.,

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	25492
Reported Resolution (Å)	4.95
Resolution Method
Other Details	SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD -2676(DEPOSITION ID: 12566).AUTHORS HAVE USED COOT TO FIX SOME CLOSE CONTACTS AND RESET THE B-FACT ...	SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD -2676(DEPOSITION ID: 12566).AUTHORS HAVE USED COOT TO FIX SOME CLOSE CONTACTS AND RESET THE B-FACTOR. AS THIS MODEL IS NOT REFINED, HENCE THE B-FACTOR DOES NOT MEAN ANYTHING.
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1
Refinement Space	REAL
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	FEI FALCON II (4k x 4k)
Electron Dose (electrons/Å**2)	64

Imaging Experiment	1
Date of Experiment	2013-10-21
Temperature (Kelvin)	85
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)	2000
Maximum Defocus (nm)	5000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2.7
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	47000
Calibrated Magnification	81495
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details	EACH IMAGE WAS EXPOSED FOR 4 SECONDS RESULTING IN A TOTAL DOSE OF ABOUT 64 ELECTRONS.

EM Software
Task	Software Package	Version
MODEL FITTING	UCSF Chimera
RECONSTRUCTION	RELION

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
	EACH PARTICLE

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.