Journal
CURRENT OPINION IN PLANT BIOLOGY
Volume 52, Issue -, Pages 69-76Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2019.08.004
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Funding
- German Research Foundation [DFG: TR 1073/6-1, TR 1073/4-1]
- German Academic Exchange Service (Germany) [DAAD:PPP-HK 57447859]
- SERB-Overseas Postdoctoral Fellowship (India) of the Government of India [SB/OS/PDF-286/2016-17]
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The exocyst is an evolutionary conserved complex that mediates tethering of post-Golgi vesicles derived from the conventional secretory pathway to the plasma membrane (PM), before SNARE-mediated fusion. Through its tethering function, connecting secretory vesicles to the PM, it mediates spatiotemporal regulation of exocytosis. As an integral element of the secretory machinery, the exocyst has been implicated in a large variety of processes. However, emerging evidence suggests that it may also cater for unconventional secretory pathways, as well as autophagy. The exocyst entertains a multitude of interactions with proteins and membrane phospholipids, reflecting its highly dynamic nature and the complex regulatory processes that hardwire it with cellular signalling networks. However, our molecular understanding of this essential complex remains fragmentary. Here we review recent work focusing on the molecular features that have revealed both commonalities with yeast and animals, as well as unique characteristics of the plant exocyst.
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