5FKV

cryo-EM structure of the E. coli replicative DNA polymerase complex bound to DNA (DNA polymerase III alpha, beta, epsilon, tau complex)


ELECTRON MICROSCOPY
Sample
DNA POLYMERASE III CATALYTIC COMPLEX (ALPHA, EPSILON, BETA, TAU)
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK III
Cryogen NameETHANE
Sample Vitrification DetailsLIQUID ETHANE
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles5663
Reported Resolution (Å)8.04
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement TypeHALF-MAPS REFINED INDEPENDENTLY
Symmetry TypePOINT
Point SymmetryC1
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)4
Imaging Experiment1
Date of Experiment2014-05-12
Temperature (Kelvin)85
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)2000
Maximum Defocus (nm)4000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification64000
Calibrated Magnification28409
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging DetailsTITAN KRIOS GOOD MICROGRAPHS WERE SELECTED FOR DIGITISATION