3JBL

Cryo-EM Structure of the Activated NAIP2/NLRC4 Inflammasome Reveals Nucleated Polymerization


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d14.903
f_angle_d2.048
f_chiral_restr0.082
f_plane_restr0.009
f_bond_d0.007
Sample
NAIP2/NLRC4 inflammasome
Sample Components
NLR family CARD domain-containing protein 4
NLR family, apoptosis inhibitory protein 2
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsBlotted for one second before plunging into liquid ethane (FEI VITROBOT MARK IV).
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles75114
Reported Resolution (Å)4.7
Resolution MethodFSC 0.143 CUT-OFF
Other Details(Single particle--Applied symmetry: C11)
Refinement Type
Symmetry TypePOINT
Point SymmetryC11
Map-Model Fitting and Refinement
Id1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 (4k x 4k)
Electron Dose (electrons/Å**2)48
Imaging Experiment1
Date of Experiment2015-04-01
Temperature (Kelvin)79.5
Microscope ModelFEI TECNAI ARCTICA
Minimum Defocus (nm)1000
Maximum Defocus (nm)3000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification21000
Calibrated Magnification28736
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging DetailsTecnai Arctica
EM Software
TaskSoftware PackageVersion
RECONSTRUCTIONEMAN2
RECONSTRUCTIONRELION
RECONSTRUCTIONSPIDER
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
Wiener-type filter