6RR7
Influenza A virus (A/NT/60/1968) polymerase Heterotrimer bound to 3'5' vRNA promoter and capped RNA primer
ELECTRON MICROSCOPY
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 |