Schmidt, A., Finegan, T., Häring, M. et al. (6 more authors) (2023) Polychaetoid/ZO-1 strengthens cell junctions under tension while localizing differently than core adherens junction proteins. Molecular Biology of the Cell, 34 (8). ar81. ISSN 1059-1524
Abstract
During embryonic development, dramatic cell shape changes and movements reshape the embryonic body plan. These require robust but dynamic linkage between the cell–cell adherens junctions and the force-generating actomyosin cytoskeleton. Our view of this linkage has evolved, and we now realize linkage is mediated by mechanosensitive multiprotein complexes assembled via multivalent connections. Here we combine genetic, cell biological, and modeling approaches to define the mechanism of action and functions of an important player, Drosophila polychaetoid, homologue of mammalian ZO-1. Our data reveal that Pyd reinforces cell junctions under elevated tension, and facilitates cell rearrangements. Pyd is important to maintain junctional contractility and in its absence cell rearrangements stall. We next use structured illumination microscopy to define the molecular architecture of cell–cell junctions during these events. The cadherin–catenin complex and Cno both localize to puncta along the junctional membrane, but are differentially enriched in different puncta. Pyd, in contrast, exhibits a distinct localization to strands that extend out from the region occupied by core junction proteins. We then discuss the implications for the protein network at the junction–cytoskeletal interface, suggesting different proteins localize and function in distinct ways, perhaps in distinct subcomplexes, but combine to produce robust connections.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Editors: |
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Copyright, Publisher and Additional Information: | © 2023 Peifer et al. This article is distributed by The American Society for Cell Biology under license from the author(s). It is available to the public under an Attribution–Noncommercial-Share Alike 4.0 International Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/4.0). |
Keywords: | Animals; Actin Cytoskeleton; Adherens Junctions; Cadherins; Cytoskeleton; Drosophila; Drosophila melanogaster; Drosophila Proteins; Mammals; Tight Junctions |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 09 Jan 2024 11:46 |
Last Modified: | 09 Jan 2024 11:46 |
Status: | Published |
Publisher: | American Society for Cell Biology (ASCB) |
Refereed: | Yes |
Identification Number: | 10.1091/mbc.e23-03-0077 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:207320 |