7BKQ
CryoEM structure of MDA5-dsRNA filament in complex with ADP with 92-degree helical twist
ELECTRON MICROSCOPY
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 6G1X |
Refinement
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 10.9134 |
f_angle_d | 0.8546 |
f_chiral_restr | 0.1097 |
f_bond_d | 0.0105 |
f_plane_restr | 0.0044 |
Sample |
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MDA5-dsRNA filament in complex with ADP |
Sample Components |
RNA |
INTERFERON-INDUCED HELICASE C DOMAIN-CONTAINING PROTEIN |
Specimen Preparation | |
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Sample Aggregation State | FILAMENT |
Vitrification Instrument | FEI VITROBOT MARK IV |
Cryogen Name | ETHANE-PROPANE |
Sample Vitrification Details |
3D Reconstruction | |
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Reconstruction Method | HELICAL |
Number of Particles | 64992 |
Reported Resolution (Å) | 3.4 |
Resolution Method | FSC 0.143 CUT-OFF |
Other Details | |
Refinement Type | |
Symmetry Type | HELICAL |
Axial Symmetry | C1 |
Axial Rise | 44.62 |
Angular Rotation | 91.75 |
Map-Model Fitting and Refinement | |||||
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Id | 1 (6G1X) | ||||
Refinement Space | REAL | ||||
Refinement Protocol | OTHER | ||||
Refinement Target | |||||
Overall B Value | 110 | ||||
Fitting Procedure | |||||
Details |
Data Acquisition | |||||||||
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Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 44.5 |
Imaging Experiment | 1 |
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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 | |
Calibrated Magnification | |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details |
EM Software | ||
---|---|---|
Task | Software Package | Version |
IMAGE ACQUISITION | EPU | |
MODEL FITTING | UCSF Chimera | |
INITIAL EULER ASSIGNMENT | RELION | 3.1 |
FINAL EULER ASSIGNMENT | RELION | 3.1 |
RECONSTRUCTION | RELION | 3.1 |
MODEL REFINEMENT | PHENIX | 1.18.2 |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
PHASE FLIPPING AND AMPLITUDE CORRECTION | 1063529 |