Journal
CURRENT OPINION IN CELL BIOLOGY
Volume 15, Issue 4, Pages 438-445Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/S0955-0674(03)00077-2
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In the secretory pathway, the forward (anterograde) membrane flow is compensated by retrograde transport of proteins and lipids. Membrane recycling is required for the maintenance of organelle homeostasis and the re-use of components of the transport machineries for the generation of new transport intermediates. However, the molecular mechanisms and other cellular functions of retrograde traffic are still poorly understood. In recent years, a multitude of protein factors that function in the secretory pathway have been discovered, most of them originally suggested to play a role in forward trafficking. However, in many cases subsequent studies have revealed that these proteins participate (also) in retrograde traffic. It is likely that this shift will continue, reflecting the fact that the two pathways are intimately connected.
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