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1 Publications

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    Clapham LabLavis Lab
    09/04/19 | Isomeric tuning yields bright and targetable red Ca indicators.
    Deo C, Sheu S, Seo J, Clapham DE, Lavis LD
    Journal of the American Chemical Society. 2019 Sep 04;141(35):13734-13738. doi: 10.1021/jacs.9b06092

    Targeting small-molecule fluorescent indicators using genetically encoded protein tags yields new hybrid sensors for biological imaging. Optimization of such systems requires redesign of the synthetic indicator to allow cell-specific targeting without compromising the photophysical properties or cellular performance of the small-molecule probe. We developed a bright and sensitive Ca indicator by systematically exploring the relative configuration of dye and chelator, which can be targeted using the HaloTag self-labeling tag system. Our "isomeric tuning" approach is generalizable, yielding a far-red targetable indicator to visualize Ca fluxes in the primary cilium.

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