Animals need to be able to evaluate environmental pH. Mechanisms that mediate sour taste and acid sensing have been reported across species, but less is known about the detection of high pH. Mi et al. identify the gene alkaliphile, which encodes a high-pH-gated chloride channel in the gustatory system of flies.
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Park, S.J., Ja, W.W. The basics of base sensing. Nat Metab 5, 364–365 (2023). https://doi.org/10.1038/s42255-023-00763-5
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DOI: https://doi.org/10.1038/s42255-023-00763-5
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