Syntaxin 16 is a master recruitment factor for cytokinesis

Mol Biol Cell. 2013 Dec;24(23):3663-74. doi: 10.1091/mbc.E13-06-0302. Epub 2013 Oct 9.

Abstract

Recently it was shown that both recycling endosome and endosomal sorting complex required for transport (ESCRT) components are required for cytokinesis, in which they are believed to act in a sequential manner to bring about secondary ingression and abscission, respectively. However, it is not clear how either of these complexes is targeted to the midbody and whether their delivery is coordinated. The trafficking of membrane vesicles between different intracellular organelles involves the formation of soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complexes. Although membrane traffic is known to play an important role in cytokinesis, the contribution and identity of intracellular SNAREs to cytokinesis remain unclear. Here we demonstrate that syntaxin 16 is a key regulator of cytokinesis, as it is required for recruitment of both recycling endosome-associated Exocyst and ESCRT machinery during late telophase, and therefore that these two distinct facets of cytokinesis are inextricably linked.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Calcium-Binding Proteins / metabolism
  • Cell Cycle Proteins / metabolism
  • Cytokinesis*
  • Endosomal Sorting Complexes Required for Transport / metabolism
  • Extracellular Space / metabolism
  • Gene Knockdown Techniques
  • Green Fluorescent Proteins / metabolism
  • HeLa Cells
  • Humans
  • Mutation / genetics
  • Nuclear Proteins / metabolism
  • Recombinant Fusion Proteins / metabolism
  • Syntaxin 16 / metabolism*
  • Telophase
  • Vesicular Transport Proteins / metabolism
  • rab GTP-Binding Proteins / metabolism

Substances

  • CNTRL protein, human
  • Calcium-Binding Proteins
  • Cell Cycle Proteins
  • Cep55 protein, human
  • Endosomal Sorting Complexes Required for Transport
  • Nuclear Proteins
  • PDCD6IP protein, human
  • Recombinant Fusion Proteins
  • Syntaxin 16
  • VPS45 protein, human
  • Vesicular Transport Proteins
  • Green Fluorescent Proteins
  • rab11 protein
  • rab GTP-Binding Proteins