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CryoEM structure of the Chikungunya virus nsP1 complex
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 8.0356 f_angle_d 0.8526 f_chiral_restr 0.0606 f_bond_d 0.0096 f_plane_restr 0.006
Sample Chikungunya NsP1 capping pore complex
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument LEICA EM CPC Cryogen Name ETHANE-PROPANE Sample Vitrification Details 3ul of sample was spotted onto the grid and hand blotted prior to plunge freezing.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 94018 Reported Resolution (Å) 2.6 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C12
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target CC Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 38.5
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2500 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 165000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION EPU 1.5.0.32 CTF CORRECTION CTFFIND 4.1 MODEL FITTING Coot 0.8.9.2 MODEL REFINEMENT PHENIX 1.17.1 INITIAL EULER ASSIGNMENT RELION 3.0.8 FINAL EULER ASSIGNMENT RELION 3.0.8 CLASSIFICATION RELION 3.0.8 RECONSTRUCTION RELION 3.0.8
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION CTF was estimated from movie frames aligned without dose-weighting. Per particle CTF correction was also performed with polished particles. 263415 Autopicking following generation of templates from 2D class averages