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A Calcium Signaling Cascade Essential for Myosin Thick Filament Assembly in Xenopus Myocytes
Spontaneous calcium release from intracellular stores occurs during myofibrillogenesis, the process of sarcomeric protein assembly in striated muscle. Preventing these Ca(2+) transients disrupts sarcomere formation, but the signal transduction cascade has not been identified. Here we report that spe...
Autores principales: | , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
The Rockefeller University Press
1998
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2132793/ https://www.ncbi.nlm.nih.gov/pubmed/9628891 |
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author | Ferrari, Michael B. Ribbeck, Katharina Hagler, Donald J. Spitzer, Nicholas C. |
author_facet | Ferrari, Michael B. Ribbeck, Katharina Hagler, Donald J. Spitzer, Nicholas C. |
author_sort | Ferrari, Michael B. |
collection | PubMed |
description | Spontaneous calcium release from intracellular stores occurs during myofibrillogenesis, the process of sarcomeric protein assembly in striated muscle. Preventing these Ca(2+) transients disrupts sarcomere formation, but the signal transduction cascade has not been identified. Here we report that specific blockade of Ca(2+) release from the ryanodine receptor (RyR) activated Ca(2+) store blocks transients and disrupts myosin thick filament (A band) assembly. Inhibition of an embryonic Ca(2+)/calmodulin-dependent myosin light chain kinase (MLCK) by blocking the ATP-binding site, by allosteric phosphorylation, or by intracellular delivery of a pseudosubstrate peptide, also disrupts sarcomeric organization. The results indicate that both RyRs and MLCK, which have well-described calcium signaling roles in mature muscle contraction, have essential developmental roles during construction of the contractile apparatus. |
format | Text |
id | pubmed-2132793 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1998 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21327932008-05-01 A Calcium Signaling Cascade Essential for Myosin Thick Filament Assembly in Xenopus Myocytes Ferrari, Michael B. Ribbeck, Katharina Hagler, Donald J. Spitzer, Nicholas C. J Cell Biol Articles Spontaneous calcium release from intracellular stores occurs during myofibrillogenesis, the process of sarcomeric protein assembly in striated muscle. Preventing these Ca(2+) transients disrupts sarcomere formation, but the signal transduction cascade has not been identified. Here we report that specific blockade of Ca(2+) release from the ryanodine receptor (RyR) activated Ca(2+) store blocks transients and disrupts myosin thick filament (A band) assembly. Inhibition of an embryonic Ca(2+)/calmodulin-dependent myosin light chain kinase (MLCK) by blocking the ATP-binding site, by allosteric phosphorylation, or by intracellular delivery of a pseudosubstrate peptide, also disrupts sarcomeric organization. The results indicate that both RyRs and MLCK, which have well-described calcium signaling roles in mature muscle contraction, have essential developmental roles during construction of the contractile apparatus. The Rockefeller University Press 1998-06-15 /pmc/articles/PMC2132793/ /pubmed/9628891 Text en This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/). |
spellingShingle | Articles Ferrari, Michael B. Ribbeck, Katharina Hagler, Donald J. Spitzer, Nicholas C. A Calcium Signaling Cascade Essential for Myosin Thick Filament Assembly in Xenopus Myocytes |
title | A Calcium Signaling Cascade Essential for Myosin Thick Filament Assembly in Xenopus Myocytes |
title_full | A Calcium Signaling Cascade Essential for Myosin Thick Filament Assembly in Xenopus Myocytes |
title_fullStr | A Calcium Signaling Cascade Essential for Myosin Thick Filament Assembly in Xenopus Myocytes |
title_full_unstemmed | A Calcium Signaling Cascade Essential for Myosin Thick Filament Assembly in Xenopus Myocytes |
title_short | A Calcium Signaling Cascade Essential for Myosin Thick Filament Assembly in Xenopus Myocytes |
title_sort | calcium signaling cascade essential for myosin thick filament assembly in xenopus myocytes |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2132793/ https://www.ncbi.nlm.nih.gov/pubmed/9628891 |
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