3J67
Structural mechanism of the dynein powerstroke (post-powerstroke state)
ELECTRON MICROSCOPY
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 4AKI | |
| Sample |
|---|
| inactive sea urchin sperm flagella |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | HOMEMADE PLUNGER |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | Blot for 1.5-2.5 seconds before plunging in liquid ethane. |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | TOMOGRAPHY |
| Number of Particles | |
| Reported Resolution (Å) | 34 |
| Resolution Method | FSC 0.5 CUT-OFF |
| Other Details | Final maps were calculated by averaging 1100 particles from 9 tomograms. 1100 axonemal repeats (96 nm long) from 9 tomograms (reconstructed using fidu ... |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (4AKI) | ||||
| Refinement Space | |||||
| Refinement Protocol | RIGID BODY FIT | ||||
| Refinement Target | Cross-correlation coefficient | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | REFINEMENT PROTOCOL--rigid body DETAILS--Initial local fitting was done using Chimera and then manual adjustment was performed. | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GENERIC GATAN (2k x 2k) | ||||||||
| Electron Dose (electrons/Å**2) | 100 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | 2012-04-28 |
| Temperature (Kelvin) | 80 |
| Microscope Model | FEI TECNAI F30 |
| Minimum Defocus (nm) | 6000 |
| Maximum Defocus (nm) | 8000 |
| Minimum Tilt Angle (degrees) | -65 |
| Maximum Tilt Angle (degrees) | 65 |
| Nominal CS | |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | GATAN LIQUID NITROGEN |
| Nominal Magnification | 13500 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| RECONSTRUCTION | IMOD | |
| RECONSTRUCTION | PEET | |
