5UPW
CryoEM Structure Refinement by Integrating NMR Chemical Shifts with Molecular Dynamics Simulations
ELECTRON MICROSCOPY
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 4XFX | |
| Sample |
|---|
| HIV-1 Capsid Protein Assembly |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | HELICAL ARRAY |
| Vitrification Instrument | HOMEMADE PLUNGER |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | The assembled sample (1.5 microliter) was applied to the carbon side of a glow discharged perforated Quantifoil grid, followed by application of 3 mic ... |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | HELICAL |
| Number of Particles | 38452 |
| Reported Resolution (Å) | 5 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | HELICAL |
| Axial Symmetry | C1 |
| Axial Rise | 6.94 |
| Angular Rotation | -31.13 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (4XFX) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 41 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI POLARA 300 |
| Minimum Defocus (nm) | 700 |
| Maximum Defocus (nm) | 2200 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.2 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | SIDE ENTRY, EUCENTRIC |
| Nominal Magnification | 31000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | EMAN | 2 |
| CTF CORRECTION | CTFFIND | 3 |
| MODEL FITTING | MDFF | 2.10 |
| MODEL REFINEMENT | Rosetta | 3.0 |
| INITIAL EULER ASSIGNMENT | IHRSR | |
| FINAL EULER ASSIGNMENT | RELION | 1.4 |
| RECONSTRUCTION | RELION | 1.4 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | 39712 | |||
