PMCCPMCCPMCC

Search tips
Search criteria 

Advanced

 
Logo of aemPermissionsJournals.ASM.orgJournalAEM ArticleJournal InfoAuthorsReviewers
 
Appl Environ Microbiol. 1985 February; 49(2): 321–327.
PMCID: PMC238401

Role of the Cell Surface of Methanosarcina mazei in Cell Aggregation

Abstract

Colonial aggregates of Methanosarcina (= Methanococcus) mazei were examined with scanning and transmission electron microscopy. Cells are irregular and grouped into multicellular sarcinal colonies, which may disaggregate in older cultures. The protoplast is bounded by a typical trilaminar plasma membrane, outside of which is a matrix of loose fibrils. The presence and compactness of matrix material are responsible for the close packing of cells, and colony disaggregation seems to be the result of matrix shedding and degradation. The cell envelope contains complex hetero polysaccharides of N-acetylgalactosamine and galacturonic and glucuronic acids. Polymers extruded by M. mazei are likely quite adhesive in nature, accounting for its strong adherence to surfaces and hardiness compared with many other methanogens.

Full text

Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (3.3M), or click on a page image below to browse page by page.

Images in this article

Click on the image to see a larger version.

Articles from Applied and Environmental Microbiology are provided here courtesy of American Society for Microbiology (ASM)