8QHD | pdb_00008qhd

Hantaan virus polymerase in hexameric state

ELECTRON MICROSCOPY

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	8C4S

Sample
Hantaan virus polymerase

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	blot force 1 3s

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	28695
Reported Resolution (Å)	3.6
Resolution Method	FSC 0.143 CUT-OFF
Other Details	This is a chimeric map of Hantaan polymerase hexamer. It originates from the global map in which the tow internal protomers are defined and a focused map that comprises one internal protomer and two external protomers. The chimeric map has a C2 symmetry
Refinement Type
Symmetry Type	POINT
Point Symmetry	C2

Map-Model Fitting and Refinement
Id	1 (8C4S)
Refinement Space	REAL
Refinement Protocol	AB INITIO MODEL
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)	40

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)	800
Maximum Defocus (nm)	2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode	BRIGHT FIELD
Specimen Holder Model	FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification	105000
Calibrated Magnification	105000
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	cryoSPARC	4.2.1
IMAGE ACQUISITION	EPU
CTF CORRECTION	cryoSPARC	4.2.1
MODEL FITTING	Coot	0.9.8.1
INITIAL EULER ASSIGNMENT	cryoSPARC	4.2.1
FINAL EULER ASSIGNMENT	cryoSPARC	4.2.1
CLASSIFICATION	cryoSPARC	4.2.1
RECONSTRUCTION	cryoSPARC	4.2.1
MODEL REFINEMENT	PHENIX	1.20.1

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		3354153