6QX8

Influenza A virus (A/NT/60/1968) polymerase dimer of heterotrimer in complex with 5' cRNA promoter


ELECTRON MICROSCOPY

Starting Model(s)

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

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d15.5052
f_angle_d0.976
f_chiral_restr0.0474
f_bond_d0.0065
f_plane_restr0.0054
Sample
Influenza A virus (A/NT/60/1968) polymerase dimer of heterotrimer in complex with 5' cRNA promoter
Sample Components
Influenza A virus (A/NT/60/1968) polymerase dimer of heterotrimer in complex with 5' cRNA promoter
Influenza A virus (A/NT/60/1968) polymerase dimer of heterotrimer in complex with 5' cRNA promoter
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Detailsblot for 3.5 sec before plunging
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles36913
Reported Resolution (Å)4.07
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC2
Map-Model Fitting and Refinement
Id1 (6QNW)
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value100
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)1.32
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)500
Maximum Defocus (nm)700
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification130000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
IMAGE ACQUISITIONEPU
CTF CORRECTIONGctf1.18
MODEL FITTINGUCSF Chimera1.13
INITIAL EULER ASSIGNMENTRELION3
FINAL EULER ASSIGNMENTRELION3
CLASSIFICATIONRELION3
RECONSTRUCTIONRELION3
MODEL REFINEMENTPHENIX1.14
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION56070