SepN is a septal junction component required for gated cell–cell communication in the filamentous cyanobacterium Nostoc

Abstract

The filamentous cyanobacterium Nostoc regulates communication between sister cells via a conformational change in septal junctions. Here, the authors identify and characterize protein SepN as a component of septal junctions, and highlight the importance of controlling molecular diffusion between cells to ensure the survival of a multicellular organism.