ArticlePLoS genetics2025
Rapid expansion and specialization of the TAS2R bitter taste receptor family in amphibians.
Article in PLoS genetics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Ingestion of the potent neurotoxin epibatidine does not compromise locomotion or behavior in the poison frogbioRxiv : the preprint server for biology · 2026Article
- Vertebrate-wide transcriptomic screening identifies immune cell-specific expression of the conserved OR-κ gene.Zoological letters · 2026Article
- Steroid Hormones Are Potent and Putatively Endogenous Activators of Human Bitter Taste Receptors.Annals of the New York Academy of Sciences · 2026Article
- Bitter Compounds as Multifunctional Agents against Diabetes-associated Cognitive Dysfunction: Bridging Metabolic Regulation and Neuroprotection.Mini reviews in medicinal chemistry · 2026Review
- Bitter Taste Receptors in Bacterial Infections and Innate Immunity.Immunity, inflammation and disease · 2025Review
- Bitter taste receptors.Chemical senses · 2025Review
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
TAS2Rs are a family of G protein-coupled receptors that function as bitter taste receptors in vertebrates. Mammalian TAS2Rs have historically garnered the most attention, leading to our understanding of their roles in taste perception relevant to human physiology and behaviors. However, the evolution and functional implications of TAS2Rs in other vertebrate lineages remain less explored. Here, we identify 9,291 TAS2Rs from 661 vertebrate genomes. Large-scale phylogenomic analyses reveal that frogs and salamanders contain unusually high TAS2R gene content, in stark contrast to other vertebrate lineages. In most species, TAS2R genes are found in clusters; compared to other vertebrates, amphibians have additional clusters and more genes per cluster. We find that vertebrate TAS2Rs have few one-to-one orthologs between closely related species, although total TAS2R count is stable in most lineages. Interestingly, TAS2R count is proportional to the receptors expressed solely in extra-oral tissues. In vitro receptor activity assays uncover that many amphibian TAS2Rs function as tissue-specific chemosensors to detect ecologically important xenobiotics.
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