Model of the bacteriophage T4 fibritin based on the cryo-EM reconstruction of the contracted T4 tail containing the phage collar and whiskers
ELECTRON MICROSCOPY
Sample
Bacteriophage T4 tail
Sample Components
fibritin
Specimen Preparation
Sample Aggregation State
PARTICLE
Vitrification Instrument
HOMEMADE PLUNGER
Cryogen Name
ETHANE
Sample Vitrification Details
plunged into liquid ethane (homemade plunger)
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
2727
Reported Resolution (Å)
25
Resolution Method
FSC 0.5 CUT-OFF
Other Details
Refinement Type
Symmetry Type
POINT
Point Symmetry
C1
Map-Model Fitting and Refinement
Id
1
Refinement Space
REAL
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details
DETAILS--The model of fibritin comprises the crystal structure of the
N-terminal domain (Boudko et al., 2004, J. Mol. Biol. 339, 927-935), the
cryst ...
DETAILS--The model of fibritin comprises the crystal structure of the
N-terminal domain (Boudko et al., 2004, J. Mol. Biol. 339, 927-935), the
crystal structure of the C-terminal domain (Tao et al., 1997, Structure 5,
789-798), and the central region, modeled with segments of triple-helical
coiled coil (Letarov et al., 2005, J. Bacteriol. 187, 1055-1066). These parts
of the fibritin structure were fitted into the cryo-EM density using the
program CHIMERA (Pettersen et al., 2004, J. Computat. Chem. 25, 1605-1612).
Chains A, B, and C correspond to one fibritin molecule located in the phage
collar. Chains D, E, and F correspond to one fibritin molecule forming the
whisker.
