6LX6

X-ray structure of human PPARalpha ligand binding domain-palmitic acid co-crystals obtained by delipidation and cross-seeding

6LX6 の概要

• エントリーDOI: 10.2210/pdb6lx6/pdb
• 分子名称: Peroxisome proliferator-activated receptor alpha, GLYCEROL, PALMITIC ACID, ... (4 entities in total)
• 機能のキーワード: nuclear receptor, protein-ligand complex, ppar, transcription
• 由来する生物種: Homo sapiens
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 31204.57

構造登録者

Kamata, S.,Saito, K.,Honda, A.,Ishikawa, R.,Oyama, T.,Ishii, I. (登録日: 2020-02-10, 公開日: 2020-11-11, 最終更新日: 2023-11-29)

主引用文献

Kamata, S.,Oyama, T.,Saito, K.,Honda, A.,Yamamoto, Y.,Suda, K.,Ishikawa, R.,Itoh, T.,Watanabe, Y.,Shibata, T.,Uchida, K.,Suematsu, M.,Ishii, I.
PPAR alpha Ligand-Binding Domain Structures with Endogenous Fatty Acids and Fibrates.
Iscience, 23:101727-101727, 2020

PubMed Abstract: Most triacylglycerol-lowering fibrates have been developed in the 1960s-1980s before their molecular target, peroxisome proliferator-activated receptor alpha (PPARα), was identified. Twenty-one ligand-bound PPARα structures have been deposited in the Protein Data Bank since 2001; however, binding modes of fibrates and physiological ligands remain unknown. Here we show thirty-four X-ray crystallographic structures of the PPARα ligand-binding domain, which are composed of a "Center" and four "Arm" regions, in complexes with five endogenous fatty acids, six fibrates in clinical use, and six synthetic PPARα agonists. High-resolution structural analyses, in combination with coactivator recruitment and thermostability assays, demonstrate that stearic and palmitic acids are presumably physiological ligands; coordination to Arm III is important for high PPARα potency/selectivity of pemafibrate and GW7647; and agonistic activities of four fibrates are enhanced by the partial agonist GW9662. These results renew our understanding of PPARα ligand recognition and contribute to the molecular design of next-generation PPAR-targeted drugs.

PubMed: 33205029
DOI: 10.1016/j.isci.2020.101727

実験手法

X-RAY DIFFRACTION (1.3 Å)