4V7A
E. coli 70S-fMetVal-tRNAVal post-translocation complex (post4)
ELECTRON MICROSCOPY
| Sample |
|---|
| E. coli 70S-fMetVal-tRNAVal-tRNAfMet complex |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | HOMEMADE PLUNGER |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | Manual blotting for about 2 seconds prior to plunging into liquid ethane (custom-built CEVS vitrification instrument with dew point temperature adjust ... |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 26429 |
| Reported Resolution (Å) | 9 |
| Resolution Method | FSC 0.5 CUT-OFF |
| Other Details | Final maps were calculated from 13 datasets acquired at different time points, computationally sorted into distinct substates. |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (3I1O, 2K4C, 2HGP, 2WRI) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | Cross-correlation coefficient | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | METHOD--Cross-correlation gradient based REFINEMENT PROTOCOL--flexible fitting, dynamic elastic network | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GENERIC TVIPS (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 20 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | 2008-05-11 |
| Temperature (Kelvin) | 77 |
| Microscope Model | FEI/PHILIPS CM200FEG |
| Minimum Defocus (nm) | 500 |
| Maximum Defocus (nm) | 2000 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | GATAN LIQUID NITROGEN |
| Nominal Magnification | 161000 |
| Calibrated Magnification | 162740 |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 160 |
| Imaging Details | Objective lens astigmatism was corrected at 200,000 times magnification |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| MODEL FITTING | DireX | |
| RECONSTRUCTION | Custom | |
| RECONSTRUCTION | IMAGIC | |
| RECONSTRUCTION | SPIDER | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| local | ||||
