7NB8
Plasmodium falciparum kinesin-5 motor domain without nucleotide, complexed with 14 protofilament microtubule.
ELECTRON MICROSCOPY
| Sample |
|---|
| 14 protofilament microtubule of alpha/beta-tubulin dimers, with kinesin-5 motor domain bound 1:1 to tubulin dimers. |
| Sample Components |
| alpha/beta-tubulin |
| Kinesin-5 |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | FILAMENT |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | 3.5 uM microtubules were incubated to the grid and incubated for 30 seconds. The grid was blotted, then 40 uM kinesin motor domain added and incubated ... |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | HELICAL |
| Number of Particles | 73684 |
| Reported Resolution (Å) | 4.4 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | RELION 3D auto-refine |
| Refinement Type | |
| Symmetry Type | HELICAL |
| Axial Symmetry | C1 |
| Axial Rise | 8.93 |
| Angular Rotation | -25.75 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (3HQD) | ||||
| Refinement Space | |||||
| 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) | 58 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI POLARA 300 |
| Minimum Defocus (nm) | |
| Maximum Defocus (nm) | |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | RELION | |
| IMAGE ACQUISITION | SerialEM | |
| MODEL FITTING | Flex-EM | |
| INITIAL EULER ASSIGNMENT | RELION | |
| FINAL EULER ASSIGNMENT | RELION | |
| RECONSTRUCTION | RELION | |
| MODEL REFINEMENT | Rosetta | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING ONLY | ||||
