Nature Chemistry, Published online: 04 May 2026; doi:10.1038/s41557-026-02125-6 Promiscuous interactions underpin natural protein evolution, but ways to harness such promiscuity to design new functions remain underexplored. Now it is shown that mapping this promiscuity with geometric precision in a de novo protein can guide its redesign into a fluorophore binder and an efficient enzyme approachin…
