Sigma 1 Receptor, Cholesterol and Endoplasmic Reticulum Contact Sites

Recent studies indicated potential importance of membrane contact sites (MCS) between the endoplasmic reticulum (ER) and other cellular organelles. These MCS have unique protein and lipid composition and serve as hubs for inter-organelle communication and signaling. Despite extensive investigation o...

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Main Authors: Vladimir Zhemkov, Jen Liou, Ilya Bezprozvanny
Format: Article
Language:English
Published: SAGE Publishing 2021-07-01
Series:Contact
Online Access:https://doi.org/10.1177/25152564211026505
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author Vladimir Zhemkov
Jen Liou
Ilya Bezprozvanny
author_facet Vladimir Zhemkov
Jen Liou
Ilya Bezprozvanny
author_sort Vladimir Zhemkov
collection DOAJ
description Recent studies indicated potential importance of membrane contact sites (MCS) between the endoplasmic reticulum (ER) and other cellular organelles. These MCS have unique protein and lipid composition and serve as hubs for inter-organelle communication and signaling. Despite extensive investigation of MCS protein composition and functional roles, little is known about the process of MCS formation. In this perspective, we propose a hypothesis that MCS are formed not as a result of random interactions between membranes of ER and other organelles but on the basis of pre-existing cholesterol-enriched ER microdomains.
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spelling doaj.art-85e80d5d11694b199f37b584528026fb2022-12-22T02:34:38ZengSAGE PublishingContact2515-25642021-07-01410.1177/25152564211026505Sigma 1 Receptor, Cholesterol and Endoplasmic Reticulum Contact SitesVladimir ZhemkovJen LiouIlya BezprozvannyRecent studies indicated potential importance of membrane contact sites (MCS) between the endoplasmic reticulum (ER) and other cellular organelles. These MCS have unique protein and lipid composition and serve as hubs for inter-organelle communication and signaling. Despite extensive investigation of MCS protein composition and functional roles, little is known about the process of MCS formation. In this perspective, we propose a hypothesis that MCS are formed not as a result of random interactions between membranes of ER and other organelles but on the basis of pre-existing cholesterol-enriched ER microdomains.https://doi.org/10.1177/25152564211026505
spellingShingle Vladimir Zhemkov
Jen Liou
Ilya Bezprozvanny
Sigma 1 Receptor, Cholesterol and Endoplasmic Reticulum Contact Sites
Contact
title Sigma 1 Receptor, Cholesterol and Endoplasmic Reticulum Contact Sites
title_full Sigma 1 Receptor, Cholesterol and Endoplasmic Reticulum Contact Sites
title_fullStr Sigma 1 Receptor, Cholesterol and Endoplasmic Reticulum Contact Sites
title_full_unstemmed Sigma 1 Receptor, Cholesterol and Endoplasmic Reticulum Contact Sites
title_short Sigma 1 Receptor, Cholesterol and Endoplasmic Reticulum Contact Sites
title_sort sigma 1 receptor cholesterol and endoplasmic reticulum contact sites
url https://doi.org/10.1177/25152564211026505
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