Septal Junctions in Filamentous Heterocyst-Forming Cyanobacteria

Trends Microbiol. 2016 Feb;24(2):79-82. doi: 10.1016/j.tim.2015.11.011. Epub 2015 Dec 31.


In the filaments of heterocyst-forming cyanobacteria, septal junctions that traverse the septal peptidoglycan join adjacent cells, allowing intercellular communication. Perforations in the septal peptidoglycan have been observed, and proteins involved in the formation of such perforations and putative protein components of the septal junctions have been identified, but their relationships are debated.

Keywords: Anabaena; cell envelope; cyanobacteria; intercellular communication; multicellularity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Proteins / genetics
  • Bacterial Proteins / metabolism
  • Cell Wall / genetics
  • Cell Wall / metabolism
  • Cyanobacteria / genetics
  • Cyanobacteria / growth & development*
  • Cyanobacteria / metabolism*
  • Gene Expression Regulation, Bacterial
  • Peptidoglycan / metabolism


  • Bacterial Proteins
  • Peptidoglycan