Abstract
We have used electron microscopy and image processing by computer to study the surface layers from the cell walls of two strains of Clostridia . The glycoprotein subunits in these layers form regular periodic arrays, one with hexagonal symmetry, the other with tetragonal symmetry. Because the lattices tend to be curved or otherwise distorted, a computer procedure for image averaging to reduce noise was developed, which takes account of and corrects the spatial distortions prior to averaging. The average images so obtained show subunits of a size which can be correlated with the known molecular weight of the glycoprotein. The subunits are joined by fine bridges, which provide a good covering of the underlying cell wall.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
