%0 Journal Article %T Crystal structures of the ligand-binding domain of human peroxisome proliferator-activated receptor δ in complexes with phenylpropanoic acid derivatives and a pyridine carboxylic acid derivative. %A Oyama T %A Takiguchi K %A Miyachi H %J Acta Crystallogr F Struct Biol Commun %V 78 %N 0 %D Feb 2022 1 %M 35102897 %F 1.072 %R 10.1107/S2053230X22000449 %X Peroxisome proliferator-activated receptor δ (PPARδ) is a member of the nuclear receptor family and regulates glucose and lipid homeostasis in a ligand-dependent manner. Numerous phenylpropanoic acid derivatives targeting three PPAR subtypes (PPARα, PPARγ and PPARδ) have been developed towards the treatment of serious diseases such as lipid-metabolism disorders. In spite of the increasing attraction of PPARδ as a pharmaceutical target, only a limited number of protein-ligand complex structures are available. Here, four crystal structures of the ligand-binding domain of PPARδ in complexes with phenylpropanoic acid derivatives and a pyridine carboxylic acid derivative are described, including an updated, higher resolution version of a previous studied structure and three novel structures. These structures showed that the ligands were bound in the ligand-binding pocket of the receptor in a similar manner but with minor variations. The results could provide variable structural information for the further design and development of ligands targeting PPARδ.