EM structure of the heavy meromyosin subfragment of Chick smooth muscle Myosin with regulatory light chain in phosphorylated state
ELECTRON MICROSCOPY
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 7.8 | pH 7.8 | ||
| Sample |
|---|
| heavy meromyosin subfragment of Chick smooth muscle Myosin with regulatory light chain in phosphorylated state |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | 2D ARRAY |
| Vitrification Instrument | HOMEMADE PLUNGER |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | Carried out in cold room at 4 degrees C |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | CRYSTALLOGRAPHY |
| Number of Particles | |
| Reported Resolution (Å) | 20 |
| Resolution Method | |
| Other Details | A total of 85 unique averaged structure factors were obtained and had an average phase residual of 17.9 degrees with a resolution to approx 2.1 nm |
| Refinement Type | |
| Symmetry Type | 2D CRYSTAL |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | RIGID BODY FIT | ||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | REFINEMENT PROTOCOL--RIGID BODY DETAILS--The model was roughly fit into the density map using O the refined using NMFF. The entire structure was then ... | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | KODAK SO-163 FILM | ||||||||
| Electron Dose (electrons/Å**2) | 40 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | 2004-10-10 |
| Temperature (Kelvin) | |
| Microscope Model | FEI/PHILIPS CM300FEG/T |
| Minimum Defocus (nm) | 4000 |
| Maximum Defocus (nm) | |
| Minimum Tilt Angle (degrees) | -60 |
| Maximum Tilt Angle (degrees) | 60 |
| Nominal CS | |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | GATAN LIQUID NITROGEN |
| Nominal Magnification | 24000 |
| Calibrated Magnification | |
| Source | TUNGSTEN HAIRPIN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| MODEL FITTING | CCP4 | |
| MODEL FITTING | NMFF | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| determined using ICE anc corrected with CTFAPPPLY | ||||
