Correction to: Nature Structural & Molecular Biology https://doi.org/10.1038/s41594-025-01659-6, published online 23 September 2025.

In the version of this article initially published, in Fig. 4b, the representative structure shown for Tolvaptan was incorrect; the figure is now amended in the HTML and PDF versions of the article.

Fig. 1
figure 1

Original and corrected Fig. 4b.