MacDonald, Chris orcid.org/0000-0002-7450-600X and Piper, Robert C (2017) Genetic dissection of early endosomal recycling highlights a TORC1-independent role for Rag GTPases. Journal of Cell Biology. pp. 3275-3290. ISSN 0021-9525
Abstract
Endocytosed cell surface membrane proteins rely on recycling pathways for their return to the plasma membrane. Although endosome-to-plasma membrane recycling is critical for many cellular processes, much of the required machinery is unknown. We discovered that yeast has a recycling route from endosomes to the cell surface that functions efficiently after inactivation of the sec7-1 allele of Sec7, which controls transit through the Golgi. A genetic screen based on an engineered synthetic reporter that exclusively follows this pathway revealed that recycling was subject to metabolic control through the Rag GTPases Gtr1 and Gtr2, which work downstream of the exchange factor Vam6. Gtr1 and Gtr2 control the recycling pathway independently of TORC1 regulation through the Gtr1 interactor Ltv1. We further show that the early-endosome recycling route and its control though the Vam6 > Gtr1/Gtr2 > Ltv1 pathway plays a physiological role in regulating the abundance of amino acid transporters at the cell surface.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Keywords: | Adaptor Proteins, Vesicular Transport/genetics,Endosomes/genetics,Guanine Nucleotide Exchange Factors/genetics,Mechanistic Target of Rapamycin Complex 1,Monomeric GTP-Binding Proteins/genetics,Multiprotein Complexes/metabolism,Saccharomyces cerevisiae Proteins/genetics,Saccharomyces cerevisiae/genetics,TOR Serine-Threonine Kinases/metabolism |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Biology (York) |
Depositing User: | Pure (York) |
Date Deposited: | 02 Aug 2017 08:45 |
Last Modified: | 16 Dec 2024 00:08 |
Published Version: | https://doi.org/10.1083/jcb.201702177 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1083/jcb.201702177 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:119722 |
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Description: MacDonald - Accepted Recycling paper
Filename: Chris_MacDonald_July_17.pdf
Description: Chris MacDonald Genetic dissection of early endosomal recycling highlights a TORC1-independent role for Rag GTPases
Licence: CC-BY-NC-SA 2.5