5T0V

Architecture of the Yeast Mitochondrial Iron-Sulfur Cluster Assembly Machinery: the Sub-Complex Formed by the Iron Donor, Yfh1, and the Scaffold, Isu1

ELECTRON MICROSCOPY

Sample
Yfh1-Isu1

Specimen Preparation
Sample Aggregation State	PARTICLE
Staining Type	NEGATIVE
Staining Material	uranyl acetate
Staining Details	Pre-incubated in HN100 buffer, the grid was placed on an 11-microliter drop of protein sample for 1 minute. Excess protein sample was blotted and wash ...	Pre-incubated in HN100 buffer, the grid was placed on an 11-microliter drop of protein sample for 1 minute. Excess protein sample was blotted and washed for 3 seconds by placing the grid on a drop of sterile water. After excess water was blotted, the grid was stained with 1% w/v uranyl acetate for 1 second and 30 seconds by successively placing it on two separate drops of uranyl acetate, with excess stain drawn off after each step.

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	4153
Reported Resolution (Å)	17.5
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	O

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

Data Acquisition
Detector Type	GATAN ULTRASCAN 4000 (4k x 4k)
Electron Dose (electrons/Å**2)	30

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TECNAI F30
Minimum Defocus (nm)	210
Maximum Defocus (nm)	2800
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2
Imaging Mode	BRIGHT FIELD
Specimen Holder Model	SIDE ENTRY, EUCENTRIC
Nominal Magnification	115000
Calibrated Magnification	115000
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	EMAN2	2.06
IMAGE ACQUISITION	DigitalMicrograph	1.6
CTF CORRECTION	EMAN2	2.06
MODEL FITTING	UCSF Chimera	1.1
MODEL REFINEMENT	Situs	2.3
MODEL REFINEMENT	NAMD	2.1
MODEL REFINEMENT	Coot	0.8.1
RECONSTRUCTION	EMAN2	2.06

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING ONLY	The ctf.auto function from EMAN2 was applied.	4153

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.