6SGX | pdb_00006sgx

Structure of protomer 1 of the ESX-3 core complex

ELECTRON MICROSCOPY

---

Refinement

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.338
f_angle_d	1.004
f_chiral_restr	0.059
f_plane_restr	0.008
f_bond_d	0.006

Sample
Protomer1 of the ESX-3 core complex

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	Blotting time: 3s Blotting force: -10

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	126308
Reported Resolution (Å)	3.7
Resolution Method	FSC 0.143 CUT-OFF
Other Details	In order to get the best possible resolution for protomer 1, the extra density not corresponding to this protomer was subtracted and masked out during the refinement.
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1
Refinement Space	REAL
Refinement Protocol	AB INITIO MODEL
Refinement Target	Map correlation coefficient
Overall B Value	29.4
Fitting Procedure
Details

Data Acquisition
Detector Type	FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)	50

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)	1600
Maximum Defocus (nm)	2600
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2.7
Imaging Mode	BRIGHT FIELD
Specimen Holder Model	FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification	75000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	RELION
IMAGE ACQUISITION	EPU
CTF CORRECTION	Gctf
INITIAL EULER ASSIGNMENT	RELION
FINAL EULER ASSIGNMENT	RELION
CLASSIFICATION	RELION
RECONSTRUCTION	RELION
MODEL REFINEMENT	PHENIX	1.15.2-3472

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		2066007