7BC5

Cryo-EM structure of ACP domain from Pichia pastoris fatty acid synthase (FAS)

ELECTRON MICROSCOPY

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Sample
Fatty acid synthase

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	LEICA EM GP
Cryogen Name	ETHANE
Sample Vitrification Details

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	117012
Reported Resolution (Å)	3.1
Resolution Method	FSC 0.143 CUT-OFF
Other Details	Asymmetric reconstruction without alignment was performed on each of two subsets (randomly assigned) from an ACP domain density-containing class after focussed 3D classification. This led to the generation of two half-maps, which were used to generate a sharpened map from all the data. Note that the number of particles given above includes particles contributing to multiple symmetrically redundant orientations, as particles were generated through focussed 3D classification.
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

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

Data Acquisition
Detector Type	FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)	60.1

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)	800
Maximum Defocus (nm)	3000
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
MODEL REFINEMENT	PHENIX	1.14
INITIAL EULER ASSIGNMENT	RELION	3.0.7
FINAL EULER ASSIGNMENT	RELION	3.0.7
CLASSIFICATION	RELION	3.0.7
RECONSTRUCTION	RELION	3.0.7

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