5YFI

Crystal structure of the anti-human prostaglandin E receptor EP4 antibody Fab fragment

5YFI の概要

• エントリーDOI: 10.2210/pdb5yfi/pdb
• 分子名称: Light chain of Fab fragment, Heavy chain of Fab fragment, ZINC ION, ... (4 entities in total)
• 機能のキーワード: antibody, immune system
• 由来する生物種: Mus musculus; 詳細
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 54581.40

構造登録者

Toyoda, Y.,Morimoto, K.,Suno, R.,Horita, S.,Iwata, S.,Kobayashi, T. (登録日: 2017-09-21, 公開日: 2018-12-05, 最終更新日: 2024-10-16)

主引用文献

Toyoda, Y.,Morimoto, K.,Suno, R.,Horita, S.,Yamashita, K.,Hirata, K.,Sekiguchi, Y.,Yasuda, S.,Shiroishi, M.,Shimizu, T.,Urushibata, Y.,Kajiwara, Y.,Inazumi, T.,Hotta, Y.,Asada, H.,Nakane, T.,Shiimura, Y.,Nakagita, T.,Tsuge, K.,Yoshida, S.,Kuribara, T.,Hosoya, T.,Sugimoto, Y.,Nomura, N.,Sato, M.,Hirokawa, T.,Kinoshita, M.,Murata, T.,Takayama, K.,Yamamoto, M.,Narumiya, S.,Iwata, S.,Kobayashi, T.
Ligand binding to human prostaglandin E receptor EP4at the lipid-bilayer interface.
Nat. Chem. Biol., 15:18-26, 2019

PubMed Abstract: Prostaglandin E receptor EP4, a G-protein-coupled receptor, is involved in disorders such as cancer and autoimmune disease. Here, we report the crystal structure of human EP4 in complex with its antagonist ONO-AE3-208 and an inhibitory antibody at 3.2 Å resolution. The structure reveals that the extracellular surface is occluded by the extracellular loops and that the antagonist lies at the interface with the lipid bilayer, proximal to the highly conserved Arg316 residue in the seventh transmembrane domain. Functional and docking studies demonstrate that the natural agonist PGE binds in a similar manner. This structural information also provides insight into the ligand entry pathway from the membrane bilayer to the EP4 binding pocket. Furthermore, the structure reveals that the antibody allosterically affects the ligand binding of EP4. These results should facilitate the design of new therapeutic drugs targeting both orthosteric and allosteric sites in this receptor family.

PubMed: 30510193
DOI: 10.1038/s41589-018-0131-3

実験手法

X-RAY DIFFRACTION (1.848 Å)