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The yeast p24 complex is required for the formation of COPI retrograde transport vesicles from the Golgi apparatus

Aguilera-Romero, A. and Kaminska, J. and Spang, A. and Riezman, H. and Muniz, M.. (2008) The yeast p24 complex is required for the formation of COPI retrograde transport vesicles from the Golgi apparatus. The Journal of cell biology, Vol. 180, H. 4. pp. 713-720.

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Official URL: http://edoc.unibas.ch/dok/A5259731

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Abstract

The p24 family members are transmembrane proteins assembled into heteromeric complexes that continuously cycle between the ER and the Golgi apparatus. These cargo proteins were assumed to play a structural role in COPI budding because of their major presence in mammalian COPI vesicles. However, this putative function has not been proved conclusively so far. Furthermore, deletion of all eight yeast p24 family members does not produce severe transport phenotypes, suggesting that the p24 complex is not essential for COPI function. In this paper we provide direct evidence that the yeast p24 complex plays an active role in retrograde transport from Golgi to ER by facilitating the formation of COPI-coated vesicles. Therefore, our results demonstrate that p24 proteins are important for vesicle formation instead of simply being a passive traveler, supporting the model in which cargo together with a small GTPase of the ARF superfamily and coat subunits act as primer for vesicle formation.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Growth & Development > Biochemistry (Spang)
UniBasel Contributors:Spang, Anne
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Rockefeller University Press
ISSN:0021-9525
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:31 Dec 2015 10:43
Deposited On:22 Mar 2012 13:23

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