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 9MKB | pdb_00009mkb

Structure of the bacteriophage T4 portal-neck-tail complex


ELECTRON MICROSCOPY
Sample
Escherichia phage T4
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsTed Pella lacey carbon 400 mesh grids (catalog No: 01824) were used.
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles69000
Reported Resolution (Å)3.8
Resolution MethodFSC 0.143 CUT-OFF
Other DetailsThis is the composite map based on the asymmetric reconstruction focused on the phage neck, the 3-fold-symmetric reconstruction focused on the middle ...This is the composite map based on the asymmetric reconstruction focused on the phage neck, the 3-fold-symmetric reconstruction focused on the middle part of the tail, and the 3-fold-symmetric reconstruction focused on the baseplate. The resolutions of these reconstructions are 3.8A, 3.4A and 3.6A, respectively. (The number of particles is given for the asymmetric reconstruction focused on the phage neck.)
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
DetailsThe structures were fitted into the composite map using ChimeraX.
Data Acquisition
Detector TypeGATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)38
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelTFS KRIOS
Minimum Defocus (nm)600
Maximum Defocus (nm)2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION