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Fully-loaded anthrax lethal toxin in its heptameric pre-pore state and PA7LF(2+1A) arrangement
Sample Components
Protective antigen
Lethal factor
Specimen Preparation
Sample Aggregation State
PARTICLE
Vitrification Instrument
GATAN CRYOPLUNGE 3
Cryogen Name
ETHANE
Sample Vitrification Details
4 uL sample was applied to grid (with 2 nm additional carbon layer) and incubated for 45 s prior blotting.
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
44000
Reported Resolution (Å)
4.2
Resolution Method
FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type
POINT
Point Symmetry
C1
Map-Model Fitting and Refinement
Id
1 (6ZXK)
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details
The previously generated PA7LF(2+1B) model (PDB:6ZXK) served as starting point and was placed into the density using rigid-body fit in Chimera. From t ...
The previously generated PA7LF(2+1B) model (PDB:6ZXK) served as starting point and was placed into the density using rigid-body fit in Chimera. From this model, chain J was fitted into the density corresponding to the third LF, located adjacent to the second LF. For the entire model a restrained refinement in phenix was performed. The resulting model was further refined with a combination of phenix and coot. Unresolved regions were deleted and side chain information was removed for less well-resolved regions.