2V6L
Molecular Model of a Type III Secretion System Needle
ELECTRON MICROSCOPY
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2CA5 |
Sample |
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SHIGELLA FLEXNERI TYPE THREE SECRETION NEEDLE |
Specimen Preparation | |
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Sample Aggregation State | FILAMENT |
Vitrification Instrument | |
Cryogen Name | ETHANE |
Sample Vitrification Details | |
Staining Type | NEGATIVE |
Staining Material | Uranyl Acetate |
Staining Details |
3D Reconstruction | |
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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 | |||||
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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 | |||||||||
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Detector Type | GENERIC FILM | ||||||||
Electron Dose (electrons/Å**2) | 10 |
Imaging Experiment | 1 |
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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 | ||
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Task | Software Package | Version |
MODEL FITTING | BUSTER | |
RECONSTRUCTION | MRC IMAGE PROCESSING PACKAGE | |
RECONSTRUCTION | SPIDER |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
GRID |