Cryo-electron microscopy reconstruction of the helical part of influenza A virus ribonucleoprotein isolated from virions.
ELECTRON MICROSCOPY
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2IQH | |
| Sample |
|---|
| NATIVE INFLUENZA A VIRUS RIBONUCLEOPROTEIN (STRAIN A WSN 33, H1N1) |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | FILAMENT |
| Vitrification Instrument | LEICA EM CPC |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | VITRIFICATION 1 -- CRYOGEN- ETHANE, INSTRUMENT- LEICA EM CPC, METHOD- BLOT FOR 2 SECONDS BEFORE PLUNGING, |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | HELICAL |
| Number of Particles | 876 |
| Reported Resolution (Å) | 18 |
| Resolution Method | |
| Other Details | SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2205.(DEPOSITION ID: 10953). |
| Refinement Type | |
| Symmetry Type | HELICAL |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (2IQH) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | RIGID BODY FIT | ||||
| Refinement Target | VOLUMETRIC | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | METHOD--RIGID BODY REFINEMENT PROTOCOL--X-RAY | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | FEI EAGLE (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | |||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | 2011-01-01 |
| Temperature (Kelvin) | |
| Microscope Model | FEI TECNAI F20 |
| Minimum Defocus (nm) | 1500 |
| Maximum Defocus (nm) | 3500 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.26 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | 65000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| MODEL FITTING | Situs | |
| MODEL FITTING | UCSF Chimera | |
| RECONSTRUCTION | IHRSR | |
| RECONSTRUCTION | SPIDER | |
| RECONSTRUCTION | Xmipp | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| EACH PLATE | ||||
