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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/ers112
|2 doi
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|a pubmed24n0725.xml
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|a (DE-627)NLM217706886
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|a (NLM)22577184
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Montesinos, Juan Carlos
|e verfasserin
|4 aut
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|a Coupled transport of Arabidopsis p24 proteins at the ER-Golgi interface
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 19.11.2012
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|a Date Revised 21.10.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a p24 proteins are a family of type I membrane proteins localized to compartments of the early secretory pathway and to coat protein I (COPI)- and COPII-coated vesicles. They can be classified, by sequence homology, into four subfamilies, named p24α, p24β, p24γ, and p24δ. In contrast to animals and fungi, plants contain only members of the p24β and p24δ subfamilies. It has previously been shown that transiently expressed red fluorescent protein (RFP)-p24δ5 localizes to the endoplasmic reticulum (ER) as a consequence of highly efficient COPI-based recycling from the Golgi apparatus. Using specific antibodies, endogenous p24δ5 has now been localized to the ER and p24β2 to the Golgi apparatus in Arabidopsis root tip cells by immunogold electron microscopy. The relative contributions of the cytosolic tail and the luminal domains to p24δ5 trafficking have also been characterized. It is demonstrated that whereas the dilysine motif in the cytoplasmic tail determines the location of p24δ5 in the early secretory pathway, the luminal domain may contribute to its distribution downstream of the Golgi apparatus. By using knock-out mutants and co-immunoprecipitation experiments, it is shown that p24δ5 and p24β2 interact with each other. Finally, it is shown that p24δ5 and p24β2 exhibit coupled trafficking at the ER-Golgi interface. It is proposed that p24δ5 and p24β2 interact with each other at ER export sites for ER exit and coupled transport to the Golgi apparatus. Once in the Golgi, p24δ5 interacts very efficiently with the COPI machinery for retrograde transport back to the ER
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Arabidopsis Proteins
|2 NLM
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|a Membrane Proteins
|2 NLM
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| 700 |
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|a Sturm, Silke
|e verfasserin
|4 aut
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|a Langhans, Markus
|e verfasserin
|4 aut
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| 700 |
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|a Hillmer, Stefan
|e verfasserin
|4 aut
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| 700 |
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|a Marcote, María Jesús
|e verfasserin
|4 aut
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| 700 |
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|a Robinson, David G
|e verfasserin
|4 aut
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| 700 |
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|a Aniento, Fernando
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 63(2012), 11 vom: 21. Juni, Seite 4243-61
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:63
|g year:2012
|g number:11
|g day:21
|g month:06
|g pages:4243-61
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|u http://dx.doi.org/10.1093/jxb/ers112
|3 Volltext
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