ArticleProceedings of the National Academy of Sciences of the United States of America2003
Requirement of the calcineurin subunit gene canB2 for indirect flight muscle formation in Drosophila.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 32 citations in OpenAlex.
- Lipid Metabolism in Relation to Calcium Homeostasis.Advances in experimental medicine and biology · 2026Review
- Article
- Reduced CardiacCirculation. Cardiovascular genetics · 2017Article
- Review
- Galactokinase is a novel modifier of calcineurin-induced cardiomyopathy in Drosophila.Genetics · 2014Article
- Molecular cloning and characterization of the calcineurin subunit A from Plutella xylostella.International journal of molecular sciences · 2013Article
- Pan-neuronal knockdown of calcineurin reduces sleep in the fruit fly, Drosophila melanogaster.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2011Article
- Cooperative synergy between NFAT and MyoD regulates myogenin expression and myogenesis.The Journal of biological chemistry · 2008Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Calcineurin is a calcium-activated protein phosphatase involved in multiple aspects of cardiac and skeletal muscle development and disease. Genes encoding calcineurin subunit proteins are highly conserved among animal species. Toward the goal of identifying new calcineurin-interacting loci that function in myogenic processes, we expressed an activated form of mouse calcineurin A in Drosophila and screened for suppressors of the phosphatase-induced lethality. Here, we demonstrate that a mutation in the canB2 gene, which encodes a regulatory subunit of Drosophila calcineurin, can suppress a pupal developmental arrest phenotype to adult viability. As canB2 is an essential gene and rare homozygous escapers are flightless, we further analyzed canB2 expression and function in pupae and adults. The gene is expressed in the forming indirect flight muscles and central nervous system during pupal development. A canA gene is comparably expressed in these tissues. Consistent with the observed muscle expression, canB2 mutants exhibit severe defects in the organization of their indirect flight muscles, a phenotype that is likely caused by muscle hypercontractility. Together, these findings demonstrate a vital role for the phosphatase in this specific facet of Drosophila myogenesis and show conserved fly and vertebrate calcineurin genes contribute prominently to fundamental processes of muscle formation and function.
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