4AQW
Model of human kinesin-5 motor domain (1II6, 3HQD) and mammalian tubulin heterodimer (1JFF) docked into the 9.5-angstrom cryo-EM map of microtubule-bound kinesin-5 motor domain in the rigor state.
ELECTRON MICROSCOPY
| Sample |
|---|
| 13-PROTOFILAMENT MICROTUBULE-BOUND HUMAN KINESIN-5 MOTOR DOMAIN IN ABSENCE OF NUCLEOTIDES |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | FILAMENT |
| Vitrification Instrument | FEI VITROBOT MARK I |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | LIQUID ETHANE |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 6748 |
| Reported Resolution (Å) | 9.5 |
| Resolution Method | |
| Other Details | THE LOOP 5 (119-131) WAS MODELED WITH MODELLER. SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2078. (DEPOSITION ID: 10752). |
| Refinement Type | |
| Symmetry Type | HELICAL |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (1II6, 3HQD, 1JFF) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | Cross-correlation coefficient | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | METHOD--RIGID BODY (1JFF). RIGID BODY AND FLEXIBLE FITTING FOR THE CHIMERIC MODEL BUILT USING 1II6 AND 3HQD. REFINEMENT PROTOCOL--X-RAY | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | KODAK SO-163 FILM | ||||||||
| Electron Dose (electrons/Å**2) | 18 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | 2011-03-16 |
| Temperature (Kelvin) | 90 |
| Microscope Model | FEI TECNAI F20 |
| Minimum Defocus (nm) | 700 |
| Maximum Defocus (nm) | 2300 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | 50000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| MODEL FITTING | Flex-EM | |
| MODEL FITTING | UCSF Chimera | |
| RECONSTRUCTION | FREALIGN | |
| RECONSTRUCTION | SPIDER | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| FREALIGN | ||||
