21bin20S complex (NSF-alphaSNAP-2:1 syntaxin-1a:SNAP-25), non-hydrolyzing, class 8
ELECTRON MICROSCOPY
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 6MDM | |
| Sample |
|---|
| The 21bin20S complex of NSF, alphaSNAP, and the soluble 2:1 binary SNARE complex of syntaxin-1a and SNAP-25 |
| Sample Components |
| Subcomplex of alphaSNAP, syntaxin-1a, and SNAP-25 |
| Homohexameric NSF |
| 2:1 binary complex of SNAP-25 and syntaxin-1a |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 271729 |
| Reported Resolution (Å) | 3.45 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (6MDM) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 (6k x 4k) | GATAN K3 (6k x 4k) | GATAN K3 (6k x 4k) | ||||||
| Electron Dose (electrons/Å**2) | 31.56 | 36.76 | 35.48 | ||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | TFS KRIOS |
| Minimum Defocus (nm) | 1000 |
| Maximum Defocus (nm) | 3000 |
| 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 | 22500 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | RELION | 3.1.4 |
| IMAGE ACQUISITION | SerialEM | |
| CTF CORRECTION | CTFFIND | 4 |
| CTF CORRECTION | RELION | 3.1.4 |
| MODEL FITTING | Coot | 0.9 |
| MODEL FITTING | UCSF ChimeraX | |
| MODEL REFINEMENT | PHENIX | 1.21 |
| INITIAL EULER ASSIGNMENT | RELION | 3.1.4 |
| FINAL EULER ASSIGNMENT | cryoSPARC | 3.2.0 |
| CLASSIFICATION | RELION | 3.1.4 |
| RECONSTRUCTION | cryoSPARC | 3.2.0 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | 2817313 | |||
