5M1S
Cryo-EM structure of the E. coli replicative DNA polymerase-clamp-exonuclase-theta complex bound to DNA in the editing mode
ELECTRON MICROSCOPY
Sample |
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DNA polymerase III alpha, beta, epsilon, theta complex with mismatched DNA duplex |
Sample Components |
DNA polymerase III alpha, beta, epsilon, theta complex with mismatched DNA duplex |
mismatched DNA duplex |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Vitrification Instrument | FEI VITROBOT MARK IV |
Cryogen Name | ETHANE |
Sample Vitrification Details | Prior to sample preparation 0.1 volumes of 0.05% Tween 20 were added to the sample 3 microliters were pipetted onto the grid and blotted for 4 seconds ... |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 15616 |
Reported Resolution (Å) | 6.7 |
Resolution Method | FSC 0.143 CUT-OFF |
Other Details | |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C1 |
Map-Model Fitting and Refinement | |||||
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Id | 1 | ||||
Refinement Space | |||||
Refinement Protocol | OTHER | ||||
Refinement Target | |||||
Overall B Value | |||||
Fitting Procedure | |||||
Details | The cryo-EM structure of the PolIIIalpha-clamp-exonuclease complex in the polymerase mode (PDB code: 5FKW) was used as a starting model, and the NMR s ... |
Data Acquisition | |||||||||
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Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 2 |
Imaging Experiment | 1 |
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Date of Experiment | |
Temperature (Kelvin) | |
Microscope Model | FEI TITAN KRIOS |
Minimum Defocus (nm) | 1800 |
Maximum Defocus (nm) | 3500 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | 2.7 |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
Nominal Magnification | 64000 |
Calibrated Magnification | 79545 |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details |
EM Software | ||
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Task | Software Package | Version |
PARTICLE SELECTION | RELION | 2 |
IMAGE ACQUISITION | DigitalMicrograph | 2.3 |
IMAGE ACQUISITION | Titan User Interface | |
CTF CORRECTION | Gctf | |
MODEL FITTING | Coot | 0.8.2 |
INITIAL EULER ASSIGNMENT | RELION | 2 |
FINAL EULER ASSIGNMENT | RELION | 2 |
CLASSIFICATION | RELION | 2 |
RECONSTRUCTION | RELION | 2 |
MODEL REFINEMENT | REFMAC | 5.8 |
MODEL REFINEMENT | LIBG |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
NONE | 150000 |