Original Papers

Archives of Microbiology

, Volume 156, Issue 4, pp 312-318

First online:

Cell wall and sheath constituents of the cyanobacterium Gloeobacter violaceus

  • Sabine SchneiderAffiliated withInstitut für Biologie II, Mikrobiologie, Albert-Ludwigs-Universität
  • , Uwe J. JürgensAffiliated withInstitut für Biologie II, Mikrobiologie, Albert-Ludwigs-Universität

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


Sheaths isolated from Gloeobacter violaceus were found to be composed of a major polysaccharide moiety (glucose, galactose, rhamnose, mannose, arabinose), a protein moiety, and negatively charged components (glucuronic acids, phosphate, sulfate). Outer membrane polypeptide patterns were dominated by two major peptidoglycan-associated proteins (Mr 62,000 and 53,000). Lipopolysaccharide constituents were glucosamine, 3-hydroxy fatty acids (3-OH-14:0, anteiso-3-OH-15:0, 3-OH-16:0, 3-OH-18:0), carbohydrates, and phosphate. A1γ-type peptidoglycan and non-peptidoglycan components (mannosamine, glucose, mannose, and glucosamine) indicated the presence of a peptidoglycan-polysaccharide complex in the cell walls of Gloeobacter violaceus.

Key words

Cell wall Cyanobacterium Gloeobacter violaceus Lipopolysaccharide Outer membrane protein Peptidoglycan-polysaccharide complex Sheath