5YHL image
Deposition Date 2017-09-28
Release Date 2018-12-05
Last Version Date 2024-11-06
Entry Detail
PDB ID:
5YHL
Title:
Crystal structure of the human prostaglandin E receptor EP4 in complex with Fab and an antagonist Br-derivative
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Mus musculus (Taxon ID: 10090)
Host Organism:
Method Details:
Experimental Method:
Resolution:
4.20 Å
R-Value Free:
0.35
R-Value Work:
0.33
R-Value Observed:
0.33
Space Group:
C 2 2 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Prostaglandin E2 receptor EP4 subtype
Gene (Uniprot):PTGER4
Mutations:N7Q, A62L, G106R, N177Q, 218-259 deletion
Chain IDs:A
Chain Length:332
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:Heavy chain of Fab fragment
Chain IDs:B (auth: H)
Chain Length:253
Number of Molecules:1
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Molecule:Light chain of Fab fragment
Chain IDs:C (auth: L)
Chain Length:236
Number of Molecules:1
Biological Source:Mus musculus
Ligand Molecules
Primary Citation

Abstact

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 PGE2 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.

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Primary Citation of related structures