6BNU
Structure of bare actin filament, backbone-averaged with sidechains truncated to alanine
ELECTRON MICROSCOPY
| Sample |
|---|
| Bare actin filament |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | FILAMENT |
| Vitrification Instrument | LEICA EM GP |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | Sample was applied to a glow-discharged holey carbon grid, incubated for 60 seconds, and blotted for 3 seconds from the backside with filter paper. |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | HELICAL |
| Number of Particles | 63139 |
| Reported Resolution (Å) | 7.5 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | HELICAL |
| Axial Symmetry | C1 |
| Axial Rise | 28.11 |
| Angular Rotation | -166.65 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | |||||
| Overall B Value | 350 | ||||
| Fitting Procedure | |||||
| Details | Atomistic model was backbone-averaged in Phenix; side chains were truncated to alanine. This treatment has resulted in the errors noted in the asso ... | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 1.5 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TECNAI 20 |
| Minimum Defocus (nm) | 1500 |
| Maximum Defocus (nm) | 3000 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | GATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER |
| Nominal Magnification | 29000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | Appion | |
| IMAGE ACQUISITION | Leginon | |
| CTF CORRECTION | CTFFIND | 3 |
| CTF CORRECTION | FREALIGN | 9.11 |
| INITIAL EULER ASSIGNMENT | EMAN2 | |
| INITIAL EULER ASSIGNMENT | SPARX | |
| FINAL EULER ASSIGNMENT | FREALIGN | 9.11 |
| RECONSTRUCTION | FREALIGN | 9.11 |
| MODEL REFINEMENT | PHENIX | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||
