Correction to: Nature Chemical Biology, published online 10 October 2022.

In the version of this article initially published, there were errors in Fig. 1a, where the top-right 5-Hydroxyindole-3-acetaldehyde structure was shown as 5-Hydroxytryptophol, and in the lower-left section of Figure 1a, where the arrows now labeled “AADC” initially appeared as “DDC,” while the adjacent Tyramine and Octopamine structures now shown in red were initially black. Further, in the lower structure of Fig. 1b, the label now reading “R = Nicotinate: tyglu#6 (13)” initially read “R = Pyrrolyl….” The changes have been made in the HTML and PDF versions of the article.