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Cryo-EM structure of the NLRP1-CARD filament
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4IFP
Refinement RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.606 r_dihedral_angle_4_deg 18.183 r_dihedral_angle_3_deg 14.527 r_dihedral_angle_1_deg 4.304 r_angle_refined_deg 1.206 r_chiral_restr 0.091 r_bond_refined_d 0.006 r_gen_planes_refined 0.006 r_bond_other_d r_angle_other_deg
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.606 r_dihedral_angle_4_deg 18.183 r_dihedral_angle_3_deg 14.527 r_dihedral_angle_1_deg 4.304 r_angle_refined_deg 1.206 r_chiral_restr 0.091 r_bond_refined_d 0.006 r_gen_planes_refined 0.006 r_bond_other_d r_angle_other_deg r_gen_planes_other r_nbd_refined r_nbd_other r_nbtor_refined r_nbtor_other r_xyhbond_nbd_refined r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_refined r_symmetry_vdw_other r_symmetry_hbond_refined r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_mcbond_it r_mcbond_other r_mcangle_it r_mcangle_other r_scbond_it r_scbond_other r_scangle_it r_scangle_other r_long_range_B_refined r_long_range_B_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Sample NLRP1-CARD filament
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method HELICAL Number of Particles 18272 Reported Resolution (Å) 3.72 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type HELICAL Axial Symmetry C1 Axial Rise 5.1 Angular Rotation -100.8
Map-Model Fitting and Refinement Id 1 (4IFP) Refinement Space Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 52.3
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 81000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION SerialEM CTF CORRECTION CTFFIND 4.1 MODEL FITTING PHENIX RECONSTRUCTION RELION 3.1 MODEL REFINEMENT PHENIX MODEL REFINEMENT REFMAC
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 118006