2V6L
Molecular Model of a Type III Secretion System Needle
ELECTRON MICROSCOPY
| Sample |
|---|
| SHIGELLA FLEXNERI TYPE THREE SECRETION NEEDLE |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | FILAMENT |
| Vitrification Instrument | |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| Staining Type | NEGATIVE |
| Staining Material | Uranyl Acetate |
| Staining Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | HELICAL |
| Number of Particles | 5000 |
| Reported Resolution (Å) | 16 |
| Resolution Method | |
| Other Details | A SET OF X-RAY STRUCTURE FACTORS WERE COMPUTED BY PLACING THE EM DENSITY IN A CRYSTAL CELL. THE MXIH MONOMER WAS RIGID BODY REFINED AGAINST THESE DATA ... |
| Refinement Type | |
| Symmetry Type | HELICAL |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (2CA5) | ||||
| Refinement Space | RECIPROCAL | ||||
| Refinement Protocol | OTHER | ||||
| Refinement Target | Cross-correlation coefficient | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | METHOD--RECIPROCAL SPACE FIT REFINEMENT PROTOCOL--X-RAY | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GENERIC FILM | ||||||||
| Electron Dose (electrons/Å**2) | 10 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI/PHILIPS CM200T |
| Minimum Defocus (nm) | 700 |
| Maximum Defocus (nm) | 700 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | 60000 |
| Calibrated Magnification | |
| Source | LAB6 |
| Acceleration Voltage (kV) | 120 |
| Imaging Details | OTHER |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| MODEL FITTING | BUSTER | |
| RECONSTRUCTION | MRC IMAGE PROCESSING PACKAGE | |
| RECONSTRUCTION | SPIDER | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| GRID | ||||
