6GKH

CryoEM structure of the MDA5-dsRNA filament in complex with ADP-AlF4


ELECTRON MICROSCOPY
Sample
MDA5-dsRNA helical filament in complex with ADP-AlF4
Sample Components
MDA5 bound to ADP-AlF4
Double-stranded RNA from bacteriophage Phi6
Specimen Preparation
Sample Aggregation StateHELICAL ARRAY
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles31556
Reported Resolution (Å)4.06
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypeHELICAL
Axial SymmetryC1
Axial Rise46.5105
Angular Rotation87.8315
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement TargetCross-correlation coefficient
Overall B Value175
Fitting Procedure
Details
Data Acquisition
Detector TypeFEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)29.85
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)-1800
Maximum Defocus (nm)-2700
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification
Calibrated Magnification75000
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONRELION2.1.0
IMAGE ACQUISITIONEPU1.9.1
CTF CORRECTIONGctf1.06
MODEL FITTINGCoot0.8.9
MODEL REFINEMENTPHENIX1.13
INITIAL EULER ASSIGNMENTRELION2.1.0
FINAL EULER ASSIGNMENTRELION2.1.0
CLASSIFICATIONRELION2.1.0
RECONSTRUCTIONRELION2.1.0
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION234835