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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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Article . 2005 . Peer-reviewed
License: Wiley Online Library User Agreement
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Article . 2006
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E‐Cadherin Transport from the trans‐Golgi Network in Tubulovesicular Carriers is Selectively Regulated by Golgin‐97

Authors: Lock, J. G.; Hammond, L. A.; Houghton, F.; Gleeson, P. A.; Stow, J. L.;

E‐Cadherin Transport from the trans‐Golgi Network in Tubulovesicular Carriers is Selectively Regulated by Golgin‐97

Abstract

E‐cadherin is a cell–cell adhesion protein that is trafficked and delivered to the basolateral cell surface. Membrane‐bound carriers for the post‐Golgi exocytosis of E‐cadherin have not been characterized. Green fluorescent protein (GFP)‐tagged E‐cadherin (Ecad‐GFP) is transported from the trans‐Golgi network (TGN) to the recycling endosome on its way to the cell surface in tubulovesicular carriers that resemble TGN tubules labeled by members of the golgin family of tethering proteins. Here, we examine the association of golgins with tubular carriers containing E‐cadherin as cargo. Fluorescent GRIP domains from golgin proteins replicate the membrane binding of the full‐length proteins and were coexpressed with Ecad‐GFP. The GRIP domains of p230/golgin‐245 and golgin‐97 had overlapping but nonidentical distributions on the TGN; both domains were on TGN‐derived tubules but only the golgin‐97 GRIP domain coincided with Ecad‐GFP tubules in live cells. When the Arl1‐binding endogenous golgins, p230/golgin‐245 and golgin‐97 were displaced from Golgi membranes by overexpression of the p230 GRIP domain, trafficking of Ecad‐GFP was inhibited. siRNA knockdown of golgin‐97 also inhibited trafficking of Ecad‐GFP. Thus, the GRIP domains of p230/golgin‐245 and golgin‐97 bind discriminately to distinct membrane subdomains of the TGN. Golgin‐97 is identified as a selective and essential component of the tubulovesicular carriers transporting E‐cadherin out of the TGN.

Keywords

Targeting Sequence, 570, 571, Living Cells, Green Fluorescent Protein, Autoantigens, Microtubules, Grip-domain, C1, Coiled-coil Proteins, 270103 Protein Targeting and Signal Transduction, Genes, Reporter, Humans, Live Cell Imaging, Golgins, Tubulovesicular Carriers, Basolateral Plasma-membrane, Trafficking, Grip Domain, Darby Canine Kidney, E-cadherin, Golgi Matrix Proteins, Membrane Proteins, Cell Biology, Post-golgi Carriers, Cadherins, Carrier Budding, Mdck Cells, Necrosis-factor-alpha, Protein Transport, Trans Golgi Network, Recycling Endosomes, Carrier Proteins, 780106 Political science and public policy, HeLa Cells, trans-Golgi Network

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    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
109
Top 10%
Top 10%
Top 10%