Sequestration of the exocytic SNARE Psy1 into multiprotein nodes reinforces polarized morphogenesis in fission yeast

Abstract

Cell shape requires mechanisms that restrict polarized growth to defined sites. Here, we show that the fission yeast exocytic t-SNARE is sequestered into megadalton-sized nodes along cell sides, where growth is inhibited. Loss of nodes leads to ectopic exocytosis and defects in cell shape.