Golgin160 Recruits the Dynein Motor to Position the Golgi Apparatus

SummaryMembrane motility is a fundamental characteristic of all eukaryotic cells. One of the best-known examples is that of the mammalian Golgi apparatus, where constant inward movement of Golgi membranes results in its characteristic position near the centrosome. While it is clear that the minus-end-directed motor dynein is required for this process, the mechanism and regulation of dynein recruitment to Golgi membranes remains unknown. Here, we show that the Golgi protein golgin160 recruits dynein to Golgi membranes. This recruitment confers centripetal motility to membranes and is regulated by the GTPase Arf1. Further, during cell division, motor association with membranes is regulated by the dissociation of the receptor-motor complex from membranes. These results identify a cell-cycle-regulated membrane receptor for a molecular motor and suggest a mechanistic basis for achieving the dramatic changes in organelle positioning seen during cell division.

Graphical AbstractFigure optionsDownload high-quality image (250 K)Download as PowerPoint slideHighlights
► Golgin160 is the dynein membrane receptor for Golgi positioning
► The GTPase Arf1 controls membrane association of golgin160
► Golgi dispersal at mitosis is mediated by membrane dissociation of golgin160