6SKL
Cryo-EM structure of the CMG Fork Protection Complex at a replication fork - Conformation 1
ELECTRON MICROSCOPY
Sample |
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Conformation 1 of CMG-Csm3-Tof1-Mrc1-Ctf4 with a fork DNA |
Sample Components |
CMG-Csm3-Tof1-Mrc1-Ctf4 |
DNA |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Vitrification Instrument | HOMEMADE PLUNGER |
Cryogen Name | ETHANE |
Sample Vitrification Details | Three microlitres of sample was applied on a grid and incubated for 15-30 s at 4 degC before manually blotting with filter paper for 10 s and plunge-f ... |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 35000 |
Reported Resolution (Å) | 3.7 |
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 (5U8S, 5MQI, 4C8H) | ||||
Refinement Space | REAL | ||||
Refinement Protocol | OTHER | ||||
Refinement Target | FSC 0.5 | ||||
Overall B Value | 20 | ||||
Fitting Procedure | |||||
Details |
Data Acquisition | |||||||||
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Detector Type | GATAN K2 QUANTUM (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 37 |
Imaging Experiment | 1 |
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Date of Experiment | |
Temperature (Kelvin) | |
Microscope Model | FEI TITAN KRIOS |
Minimum Defocus (nm) | 1400 |
Maximum Defocus (nm) | 2600 |
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 | 130000 |
Calibrated Magnification | |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details |
EM Software | ||
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Task | Software Package | Version |
IMAGE ACQUISITION | EPU | 1.9.1 |
CTF CORRECTION | Gctf | 0.50 |
MODEL FITTING | RELION | 3.0.6 |
MODEL FITTING | Coot | 0.9-pre |
MODEL FITTING | UCSF Chimera | 1.13 |
MODEL REFINEMENT | PHENIX | 1.16-3549 |
MODEL REFINEMENT | REFMAC | 5.8.0238 |
INITIAL EULER ASSIGNMENT | RELION | 3.0.6 |
FINAL EULER ASSIGNMENT | RELION | 3.0.6 |
CLASSIFICATION | RELION | 3.0.6 |
RECONSTRUCTION | RELION | 3.0.6 |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
PHASE FLIPPING AND AMPLITUDE CORRECTION | 632000 |