7BTF

SARS-CoV-2 RNA-dependent RNA polymerase in complex with cofactors in reduced condition


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 6NUR 

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d12.1163
f_angle_d0.719
f_chiral_restr0.0516
f_bond_d0.0089
f_plane_restr0.0042
Sample
Structure of SARS-Cov-2 RNA-dependent RNA polymerase in complex with cofactors in reduced condition
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles145388
Reported Resolution (Å)2.95
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (6NUR, 6NUR, 6NUR, 6NUR)
Refinement Space
Refinement ProtocolRIGID BODY FIT
Refinement Targetcorrelation coefficient
Overall B Value58.5
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 QUANTUM (4k x 4k)
Electron Dose (electrons/Å**2)60
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1000
Maximum Defocus (nm)2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification165000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging DetailsPreliminary grid screening was preformed manually.
EM Software
TaskSoftware PackageVersion
IMAGE ACQUISITIONSerialEM
CTF CORRECTIONcryoSPARC2.9.1
MODEL FITTINGUCSF Chimera1.14
INITIAL EULER ASSIGNMENTcryoSPARC2.9.1
FINAL EULER ASSIGNMENTcryoSPARC2.9.1
CLASSIFICATIONcryoSPARC2.9.1
RECONSTRUCTIONcryoSPARC2.9.1
MODEL REFINEMENTPHENIX1.16
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTIONCTF correction was done by patch CTF correction.753481