7YN0

Cryo-EM structure of MERS-CoV spike protein, all RBD-down conformation


ELECTRON MICROSCOPY
Sample
recombinant MERS-CoV (betacoronavirus 2c EMC 2012) fm2P Spike
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Detailsblot for 2.5 seconds before plunging; blot force: -1; waiting time: 30s.
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles157861
Reported Resolution (Å)4.1
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeFEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)40.6
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TALOS ARCTICA
Minimum Defocus (nm)1500
Maximum Defocus (nm)1700
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification92000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC3.2
IMAGE ACQUISITIONEPU2.0
CTF CORRECTIONcryoSPARC3.2
INITIAL EULER ASSIGNMENTcryoSPARC3.2
FINAL EULER ASSIGNMENTcryoSPARC3.2
CLASSIFICATIONcryoSPARC3.2
RECONSTRUCTIONcryoSPARC3.2
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION1679870