A small molecule called optovin acts as a light-sensitive ligand for an ion channel involved in the detection of painful sensory stimuli. This unexpected finding emerged from a behavioral screen in zebrafish and provides a tool for the remote control of pain by light.
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Fajardo, O., Friedrich, R. A light switch for pain. Nat Chem Biol 9, 219–220 (2013). https://doi.org/10.1038/nchembio.1203
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DOI: https://doi.org/10.1038/nchembio.1203
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