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Structure of human 1918 influenza A polymerase heterotrimer in complex with 1918 NEP.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model AlphaFold
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 4.1986 f_angle_d 0.5046 f_chiral_restr 0.0375 f_plane_restr 0.0037 f_bond_d 0.0031
Sample Structure of human 1918 influenza A polymerase heterotrimer in complex with 1918 NEP
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 105000 Reported Resolution (Å) 2.53 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type TFS FALCON 4i (4k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 5000 Maximum Defocus (nm) 24000 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 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.2 - 4.7 IMAGE ACQUISITION EPU 3.14 CTF CORRECTION cryoSPARC 4.2 - 4.7 MODEL FITTING UCSF ChimeraX 1.7 MODEL FITTING Coot 0.9.8.3 INITIAL EULER ASSIGNMENT cryoSPARC 4.2 - 4.7 FINAL EULER ASSIGNMENT cryoSPARC 4.2 - 4.7 CLASSIFICATION cryoSPARC 4.2 - 4.7 RECONSTRUCTION cryoSPARC 4.2 - 4.7 MODEL REFINEMENT PHENIX 1.19.2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION