8FAK
DNA replication fork binding triggers structural changes in the PriA DNA helicase that regulate the PriA-PriB replication restart pathway in E. coli
ELECTRON MICROSCOPY
Sample |
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Complex of PriA, PriB, and replication fork |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Vitrification Instrument | FEI VITROBOT MARK IV |
Cryogen Name | ETHANE |
Sample Vitrification Details |
3D Reconstruction | |
---|---|
Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 190000 |
Reported Resolution (Å) | 3.22 |
Resolution Method | FSC 0.143 CUT-OFF |
Other Details | Highest resolution used in refinement was 4.4A |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C1 |
Map-Model Fitting and Refinement | |||||
---|---|---|---|---|---|
Id | 1 | ||||
Refinement Space | REAL | ||||
Refinement Protocol | FLEXIBLE FIT | ||||
Refinement Target | |||||
Overall B Value | |||||
Fitting Procedure | |||||
Details |
Data Acquisition | |||||||||
---|---|---|---|---|---|---|---|---|---|
Detector Type | GATAN K3 (6k x 4k) | FEI FALCON III (4k x 4k) | |||||||
Electron Dose (electrons/Å**2) | 100 | 60 |
Imaging Experiment | 1 |
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Date of Experiment | |
Temperature (Kelvin) | |
Microscope Model | FEI TITAN KRIOS |
Minimum Defocus (nm) | 500 |
Maximum Defocus (nm) | 2000 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
Nominal Magnification | |
Calibrated Magnification | |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details |
EM Software | ||
---|---|---|
Task | Software Package | Version |
PARTICLE SELECTION | cisTEM | 2.0.0 |
IMAGE ACQUISITION | SerialEM | |
CTF CORRECTION | cisTEM | 2.0.0 |
MODEL FITTING | UCSF Chimera | |
INITIAL EULER ASSIGNMENT | cisTEM | 2.0.0 |
FINAL EULER ASSIGNMENT | cisTEM | 2.0.0 |
RECONSTRUCTION | cisTEM | 2.0.0 |
MODEL REFINEMENT | PHENIX |
Image Processing | ||||
---|---|---|---|---|
CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
PHASE FLIPPING AND AMPLITUDE CORRECTION | 1500000 |