Robustness of 3-D maximum likelihood reconstructions of viruses from cryo electron microscope images

2002 ◽  
Author(s):  
Zhye Yin ◽  
Yili Zheng ◽  
Peter C. Doerschuk
Keyword(s):  
Electron Microscope ◽  
Maximum Likelihood ◽  
Microscope Images

Maximum likelihood 3D reconstruction of multiple viruses from mixtures of cryo electron microscope images

2005 ◽  
Author(s):  
Junghoon Lee ◽  
Yili Zheng ◽  
Peter C. Doerschuk ◽  
Jinghua Tang ◽  
John E. Johnson
Keyword(s):  
Electron Microscope ◽  
Maximum Likelihood ◽  
3D Reconstruction ◽  
Microscope Images

scholarly journals Detecting asymmetry in the presence of symmetry with maximum likelihood three-dimensional reconstructions of viruses from electron microscope images

2016 ◽  
Vol 10 (8) ◽  
pp. 624-629 ◽  
Author(s):  
Kang Wang ◽  
Chi-yu Fu ◽  
Peter E. Prevelige ◽  
Carlos E. Catalano ◽  
John E. Johnson ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Maximum Likelihood ◽  
Three Dimensional ◽  
Microscope Images

Electron Microscope Observations of Magnetic and Electric Effects

1970 ◽  
Vol 28 ◽  
pp. 430-431
Author(s):  
John Silcox
Keyword(s):  
Electron Microscope ◽  
Electric Fields ◽  
Magnetic Image ◽  
Magnetic Effects ◽  
Ferromagnetic Films ◽  
Diffraction Contrast ◽  
Microscope Images ◽  
Electric Effects ◽  
Image Detail

Several aspects of magnetic and electric effects in electron microscope images are of interest and will be discussed here. Clearly electrons are deflected by magnetic and electric fields and can give rise to image detail. We will review situations in ferromagnetic films in which magnetic image effects are the predominant ones, others in which the magnetic effects give rise to rather subtle changes in diffraction contrast, cases of contrast at specimen edges due to leakage fields in both ferromagnets and superconductors and some effects due to electric fields in insulators.

Three-dimensional reconstruction of the stacked-disk aggregate of tobacco mosaic virus protein from electron micrographs

1971 ◽  
Vol 261 (837) ◽  
pp. 211-219 ◽  
Keyword(s):  
Electron Microscope ◽  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Virus Protein ◽  
Protein Subunits ◽  
Microscope Images ◽  
Dimensional Reconstruction ◽  
Inner Parts

The three-dimensional structure of the stacked-disk rod of tobacco mosaic virus protein has been reconstructed to a resolution of about 2 nm from electron microscope images. Closed rings of seventeen protein subunits (compared with 16 ⅓ in one turn of the virus helix) are stacked in polar fashion, the stacking being accompanied by an axial perturbation of periodicity 5.3 nm connecting successive pairs of rings into disks. The axial perturbation consists of a movement towards each other of the outer parts of the subunits in the two rings comprising a disk, together with a movement of the inner parts in the opposite direction. This could be explained either by a bending of parts of the subunits in the appropriate directions or by a bodily tilting of the subunits in the two rings in opposite directions.

Sign in / Sign up

Export Citation Format

Share Document