Crystal structures of the Arabidopsis thaliana abscisic acid receptor PYL10 and its complex with abscisic acid

► Crystal structures of Arabidopsis thaliana PYL10 in the apo- and ABA-bound states. ► The CL2 loop of PYL10 in the apo-state adopts a closed conformation. ► A model was proposed to explain the constitutive interaction between PYL10 and PP2C.