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Cited by 545

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Mechanisms Determining the Morphology of the Peripheral ER

Open access
Shibata, Yoko, Shemesh, Tom, Prinz, William A., Palazzo, Alexander F., Kozlov, Michael M., Rapoport, Tom A.·2010·Cell

Abstract

The endoplasmic reticulum (ER) consists of the nuclear envelope and a peripheral network of tubules and membrane sheets. The tubules are shaped by the curvature-stabilizing proteins reticulons and DP1/Yop1p, but how the sheets are formed is unclear. Here we identify several sheet-enriched membrane proteins in the mammalian ER, including proteins that translocate and modify newly synthesized polypeptides, as well as coiled-coil membrane proteins that are highly upregulated in cells with proliferated ER sheets, all of which are localized by membrane-bound polysomes. These results indicate that sheets and tubules correspond to rough and smooth ER, respectively. One of the coiled-coil proteins, Climp63, serves as a “luminal ER spacer” and forms sheets when overexpressed. More universally, however, sheet-formation appears to involve the reticulons and DP1/Yop1p, which localize to sheet edges and whose abundance determines the ratio of sheets to tubules. These proteins may generate sheets by stabilizing the high curvature of edges.

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Metadata

Authors
Shibata, Y., Shemesh, T., Prinz, W. A., Palazzo, A. F., Kozlov, M. M., & Rapoport, T. A.
Venue
Cell
Publisher
Elsevier BV
Published
2010-11
Volume
143
Issue
5
Pages
774-788
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2168135619
Cited by
545
References
1
FWCI
12.28
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Mechanisms Determining the Morphology of the Peripheral ER. https://app.cochat.ai/papers/10.1016/j.cell.2010.11.007
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Shibata, Y., Shemesh, T., Prinz, W. A., Palazzo, A. F., Kozlov, M. M., & Rapoport, T. A. (2010). Mechanisms Determining the Morphology of the Peripheral ER. Cell. https://doi.org/10.1016/j.cell.2010.11.007

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