Experiment: 7VFE

Cryo-EM structure of Vaccinia virus scaffolding protein D13 with N-terminal polyhistidine tag

ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6BEI

Refinement

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	15.733
f_angle_d	0.566
f_chiral_restr	0.052
f_bond_d	0.008
f_plane_restr	0.005

Sample
Vaccinia virus scaffolding protein D13 with N-terminal polyhistidine tag in its trimeric state

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE-PROPANE
Sample Vitrification Details	3 microliter sample volume was loaded onto a holey grid with additional graphene oxide film. 10 sec waiting time, 5 sec blotting time and blot force 0 ...	3 microliter sample volume was loaded onto a holey grid with additional graphene oxide film. 10 sec waiting time, 5 sec blotting time and blot force 0, no delay time were applied before plunging.

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	173354
Reported Resolution (Å)	2.63
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C3

Map-Model Fitting and Refinement
Id	1 (6BEI)
Refinement Space	REAL
Refinement Protocol	FLEXIBLE FIT
Refinement Target
Overall B Value
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)	500
Maximum Defocus (nm)	1500
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	155000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	RELION	3.1
IMAGE ACQUISITION	EPU
CTF CORRECTION	CTFFIND	4.1.9
CTF CORRECTION	RELION	3.1
MODEL FITTING	UCSF Chimera	1.13.1
MODEL FITTING	Coot	0.9.1
MODEL REFINEMENT	PHENIX	1.18
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		284340