{Reference Type}: Journal Article {Title}: Plant signalling: The case of the recycled receptor. {Author}: Bennett T; {Journal}: Curr Biol {Volume}: 34 {Issue}: 3 {Year}: 2024 02 5 {Factor}: 10.9 {DOI}: 10.1016/j.cub.2023.12.065 {Abstract}: RsbQ from bacteria and KAI2 from plants are highly related α/β-hydrolase proteins with unknown ligands. In a new study, Melville, Kamran et al. attempt to understand the ligand binding of RsbQ using knowledge from studies of KAI2, with surprising results.