Crossref journal-article
The Company of Biologists
Development (237)
Abstract

ABSTRACT Catenins (α-, β- and γ- or plakoglobin) are cytoplasmic cadherin-associated proteins. Studies on cultured cells have suggested that both α-catenin and plakoglobin are important for the adhesive function of cadherins. α-catenin binds to both β-catenin and plakoglobin and may link the cadherin/catenin complex to actin filaments. Separate domains of plakoglobin bind to cadherin and α-catenin, suggesting it may act as a bridge between these molecules. However, plakoglobin may have other activities: it is expressed in both desmosomal junctions in association with desmogleins and the cytoplasm in conjunction with APC, and previous work suggests it may act in a dorsal signalling pathway when overexpressed in Xenopus embryos. Here, we have studied the roles of α-catenin and plakoglobin directly, by depleting the maternal mRNAs coding for each of them in developing Xenopus embryos. We find that depletion of maternal α-catenin causes the loss of intercellular adhesion at the blastula stage, similar to that reported previously for EP cadherin. Depletion of plakoglobin results in a partial loss of adhesion, and a loss of embryonic shape, but does not affect dorsal signalling.

Bibliography

Kofron, M., Spagnuolo, A., Klymkowsky, M., Wylie, C., & Heasman, J. (1997). The roles of maternal α-catenin and plakoglobin in the early Xenopus embryo. Development, 124(8), 1553–1560.

Authors 5
  1. M. Kofron (first)
  2. A. Spagnuolo (additional)
  3. M. Klymkowsky (additional)
  4. C. Wylie (additional)
  5. J. Heasman (additional)
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Dates
Type When
Created 4 years, 4 months ago (April 26, 2021, 12:06 a.m.)
Deposited 6 months, 3 weeks ago (Feb. 13, 2025, 9:44 p.m.)
Indexed 6 months, 3 weeks ago (Feb. 14, 2025, 12:34 a.m.)
Issued 28 years, 4 months ago (April 15, 1997)
Published 28 years, 4 months ago (April 15, 1997)
Published Online 28 years, 4 months ago (April 15, 1997)
Published Print 28 years, 4 months ago (April 15, 1997)
Funders 0

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@article{Kofron_1997, title={The roles of maternal α-catenin and plakoglobin in the early Xenopus embryo}, volume={124}, ISSN={1477-9129}, url={http://dx.doi.org/10.1242/dev.124.8.1553}, DOI={10.1242/dev.124.8.1553}, number={8}, journal={Development}, publisher={The Company of Biologists}, author={Kofron, M. and Spagnuolo, A. and Klymkowsky, M. and Wylie, C. and Heasman, J.}, year={1997}, month=apr, pages={1553–1560} }