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BIOSENSORS

O auxin, where art thou?

In a feat of protein engineering alchemy, a FRET biosensor for tryptophan has been engineered into a direct biosensor for auxin, after a determined journey of over 2,800 steps to switch to a sensitivity appropriate for a plant hormone.

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Fig. 1: From Trp to auxin sensing in 2,840 steps.

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Correspondence to Alexander M. Jones.

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Balcerowicz, M., Shetty, K.N. & Jones, A.M. O auxin, where art thou?. Nat. Plants 7, 546–547 (2021). https://doi.org/10.1038/s41477-021-00921-1

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