Ligand binding to human prostaglandin E receptor EP4 at the lipid-bilayer interface

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 ext...

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Bibliographic Details
Published in:Nature chemical biology Vol. 15; no. 1; pp. 18 - 26
Main Authors: Toyoda, Yosuke, Morimoto, Kazushi, Suno, Ryoji, Horita, Shoichiro, Yamashita, Keitaro, Hirata, Kunio, Sekiguchi, Yusuke, Yasuda, Satoshi, Shiroishi, Mitsunori, Shimizu, Tomoko, Urushibata, Yuji, Kajiwara, Yuta, Inazumi, Tomoaki, Hotta, Yunhon, Asada, Hidetsugu, Nakane, Takanori, Shiimura, Yuki, Nakagita, Tomoya, Tsuge, Kyoshiro, Yoshida, Suguru, Kuribara, Tomoko, Hosoya, Takamitsu, Sugimoto, Yukihiko, Nomura, Norimichi, Sato, Miwa, Hirokawa, Takatsugu, Kinoshita, Masahiro, Murata, Takeshi, Takayama, Kiyoshi, Yamamoto, Masaki, Narumiya, Shuh, Iwata, So, Kobayashi, Takuya
Format: Journal Article
Language:English
Published: New York Nature Publishing Group US 01.01.2019
Nature Publishing Group
Subjects:
631/154/436
631/45/535
631/45/535/1266
631/92/287
Allosteric properties
Binding
Biochemical Engineering
Biochemistry
Bioorganic Chemistry
Cancer
Cell Biology
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Crystal structure
Docking
Drug delivery
Drug development
G protein-coupled receptors
Ligands
Lipid bilayers
Lipids
Prostaglandin E
Prostaglandin E2
Proteins
ISSN:1552-4450, 1552-4469, 1552-4469
Online Access:Get full text
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Summary: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 2 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. The structure of human prostaglandin E receptor EP4 in complex with antagonist ONO-AE3-208 and a functional antibody reveals a ligand-binding site at the interface of the lipid bilayer that is unique among GPCRs.
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ISSN:1552-4450
1552-4469
1552-4469
DOI:10.1038/s41589-018-0131-3