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Influenza A virus (A/NT/60/1968) polymerase Heterotrimer bound to 3'5' vRNA promoter and capped RNA primer
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6QNW
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 11.8313 f_angle_d 0.8182 f_chiral_restr 0.0516 f_bond_d 0.0073 f_plane_restr 0.0048
Sample Influenza A virus (A/NT/60/1968) polymerase Heterotrimer bound to 3'5' vRNA promoter and Capped RNA Sample Components polymerase Heterotrimer Capped messenger RNA Influenza A 5' and 3' viral RNA promoter
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details blot for 3.5 sec before plunging
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 170144 Reported Resolution (Å) 3.01 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (6QNW) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value 65 Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 36.6
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 130000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION SerialEM CTF CORRECTION Gctf 1.18 MODEL FITTING UCSF Chimera 1.13 INITIAL EULER ASSIGNMENT cryoSPARC 2.5 FINAL EULER ASSIGNMENT RELION 3 CLASSIFICATION RELION 3 RECONSTRUCTION RELION 3 MODEL REFINEMENT PHENIX 1.14
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 2210168 template picking in cryosparc v2.5