2VDC
THE 9.5 A RESOLUTION STRUCTURE OF GLUTAMATE SYNTHASE FROM CRYO-ELECTRON MICROSCOPY AND ITS OLIGOMERIZATION BEHAVIOR IN SOLUTION: FUNCTIONAL IMPLICATIONS.
ELECTRON MICROSCOPY
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2VDC | |
| Sample |
|---|
| AZOSPIRILLUM BRASILENSE GLUTAMATE SYNTHASE |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | HOMEMADE PLUNGER |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | NLIQUID ETHANE |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 12800 |
| Reported Resolution (Å) | 9.5 |
| Resolution Method | |
| Other Details | THE CHAINS A,B,C,D,E,F OF THE COMPLEX CORRESPOND TO THE ALPHA SUBUNITS, SOLVED BY X-RAY (PDB CODE 1EA0). THREE DISORDERED REGIONS OF THIS X-RAY STRUCT ... |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | I |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (2VDC) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | METHOD--REAL-SPACE LOCAL OPTIMIZATION REFINEMENT PROTOCOL--X-RAY AND HOMOLOGY MODELLING | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | KODAK SO-163 FILM | ||||||||
| Electron Dose (electrons/Å**2) | 10 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | 2005-05-10 |
| Temperature (Kelvin) | 93.15 |
| Microscope Model | JEOL 2010UHR |
| Minimum Defocus (nm) | 1700 |
| Maximum Defocus (nm) | 3200 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 0.5 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | 50000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details | CC =1.1 MM, FOCAL -LEN-1.9 M. MICROGRAPH WITH ANISOTROPIC OR NO DIFFRACTION RINGS WERE REMOVED USING THE ENHANCED POWER SPECTRA SORTING METHOD (JONIC S,SORZANO CO,COTTEVIEILLE M, LARQUET E, BOISSET N.,A NOVEL METHOD FOR IMPROVEMENT OF VISUALIZATION OF POWER SPECTRA FOR SORTING CRYO-ELECTRON MICROGRAPHS AND THEIR LOCAL AREAS. J STRUCT BIOL. 2007, 157(1),156-67.) |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| MODEL FITTING | UCSF Chimera | |
| RECONSTRUCTION | SPIDER | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| WIENER FILTERING OF VOLUMES FROM FOCAL SERIES | ||||
