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Influenza A nucleoprotein docked into 3D helical structure of the wild type ribonucleoprotein complex obtained using cryoEM. Conformation 4.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2IQH
Specimen Preparation Sample Aggregation State HELICAL ARRAY Vitrification Instrument LEICA EM CPC Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method HELICAL Number of Particles 2743 Reported Resolution (Å) 10 Resolution Method OTHER Other Details Refinement Type Symmetry Type HELICAL Axial Symmetry D1 Axial Rise 29.26 Angular Rotation -55.82
Map-Model Fitting and Refinement Id 1 (2IQH) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON II (4k x 4k) Electron Dose (electrons/Å**2) 2
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1500 Maximum Defocus (nm) 3000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 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 Xmipp 3.0 IMAGE ACQUISITION EPU CTF CORRECTION CTFFIND 4.0 MODEL FITTING UCSF Chimera 1.12 INITIAL EULER ASSIGNMENT IHRSR 18.0 FINAL EULER ASSIGNMENT RELION 2.0 CLASSIFICATION RELION 2.0 RECONSTRUCTION RELION 2.0
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 137461 Manual picking