ArticleScientific reports2024
Evolution of ion channels in cetaceans: a natural experiment in the tree of life.
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Article
- Comparative Genomics Reveals Genetic Adaptations to Diving-Associated Foraging in Anseriformes.Ecology and evolution · 2026Article
- Beyond scaling: how brains reorganize to support higher intelligence.Frontiers in systems neuroscience · 2026Article
- Identification and classification of ion-channels across the tree of life provide functional insights into understudied CALHM channels.bioRxiv : the preprint server for biology · 2025Article
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Authors and funding
6 authors.
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Abstract
Cetaceans represent a natural experiment within the tree of life in which a lineage changed from terrestrial to aquatic habitats. This shift involved phenotypic modifications, representing an opportunity to explore the genetic bases of phenotypic diversity. Among the different molecular systems that maintain cellular homeostasis, ion channels are crucial for the proper physiological functioning of all living species. This study aims to explore the evolution of ion channels during the evolutionary history of cetaceans. To do so, we created a bioinformatic pipeline to annotate the repertoire of ion channels in the genome of the species included in our sampling. Our main results show that cetaceans have, on average, fewer protein-coding genes and a higher percentage of annotated ion channels than non-cetacean mammals. Signals of positive selection were detected in ion channels related to the heart, locomotion, visual and neurological phenotypes. Interestingly, we predict that the NaV1.5 ion channel of most toothed whales (odontocetes) is sensitive to tetrodotoxin, similar to NaV1.7, given the presence of tyrosine instead of cysteine, in a specific position of the ion channel. Finally, the gene turnover rate of the cetacean crown group is more than three times faster than that of non-cetacean mammals.
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