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- PDB-9ee5: Cryo-EM structure of the ONO2550289-bound prostaglandin D2 recept... -

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Basic information

Entry
Database: PDB / ID: 9ee5
TitleCryo-EM structure of the ONO2550289-bound prostaglandin D2 receptor (DP1)-bRIL-Fab complex
Components
  • Prostaglandin D2 receptor,Soluble cytochrome b562
  • anti-BRIL Fab Heavy Chain
  • anti-BRIL Fab Light Chain
  • anti-Fab Nanobody synthetic construct
KeywordsMEMBRANE PROTEIN/Immune System / GPCR / cryo-EM / DP1 / inverse agonist / ONO2550289 / prostaglandin D2 receptor / prostanoid DP receptor / PGD receptor / PTGDR / DP1-bRIL chimera / MEMBRANE PROTEIN / MEMBRANE PROTEIN-Immune System complex
Function / homology
Function and homology information


prostaglandin J receptor activity / prostaglandin D receptor activity / adenosine metabolic process / Prostanoid ligand receptors / cellular response to prostaglandin D stimulus / male sex determination / sleep / mast cell degranulation / electron transport chain / positive regulation of cytosolic calcium ion concentration ...prostaglandin J receptor activity / prostaglandin D receptor activity / adenosine metabolic process / Prostanoid ligand receptors / cellular response to prostaglandin D stimulus / male sex determination / sleep / mast cell degranulation / electron transport chain / positive regulation of cytosolic calcium ion concentration / G alpha (s) signalling events / periplasmic space / electron transfer activity / G protein-coupled receptor signaling pathway / iron ion binding / inflammatory response / heme binding / membrane / plasma membrane
Similarity search - Function
Prostaglandin D receptor / Prostanoid receptor / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family)
Similarity search - Domain/homology
: / Soluble cytochrome b562 / Prostaglandin D2 receptor
Similarity search - Component
Biological speciessynthetic construct (others)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.89 Å
AuthorsDavoudinasab, B. / Cherezov, V. / Han, G.W.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM127086 United States
CitationJournal: Nat Commun / Year: 2025
Title: Structural insights into the mechanism of activation and inhibition of the prostaglandin D2 receptor 1.
Authors: Behnaz Davoudinasab / Aleksey Raskovalov / Woojin Lee / Donggyun Kim / Heesoo Kim / Jordy Homing Lam / Gye Won Han / Vsevolod Katritch / Vadim Cherezov /
Abstract: The prostaglandin D2 receptor 1 (DP1), a member of the prostanoid G protein-coupled receptor (GPCR) family, plays critical roles in allergic responses, sleep regulation, immune modulation, and ...The prostaglandin D2 receptor 1 (DP1), a member of the prostanoid G protein-coupled receptor (GPCR) family, plays critical roles in allergic responses, sleep regulation, immune modulation, and vasodilation. Here, we present five high-resolution cryo-electron microscopy (cryo-EM) structures of the human DP1 receptor, including an apo structure, two inactive state structures bound to two different inverse agonists developed by ONO Pharmaceutical, and two active state structures in complex with the G protein and bound to the endogenous agonist PGD2 and its selective derivative BW245C. Structural analysis, complemented by molecular dynamics simulations and site-directed mutagenesis, reveals key residues involved in ligand recognition and suggests a distinct activation mechanism for DP1, which lacks most of the conserved class A GPCR motifs. Notably, the unique residue K76 within the conserved sodium pocket acts as a major activation switch, while amphiphilic helix 8 adopts an unconventional orientation essential for receptor function. These findings offer valuable insights into the structure and function of prostanoid receptors and may facilitate the development of therapeutics targeting DP1.
History
DepositionNov 18, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 3, 2025Provider: repository / Type: Initial release
Revision 1.0Sep 3, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Sep 3, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Sep 3, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Sep 3, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Sep 3, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Sep 3, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Oct 22, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
H: anti-BRIL Fab Heavy Chain
K: anti-Fab Nanobody synthetic construct
L: anti-BRIL Fab Light Chain
A: Prostaglandin D2 receptor,Soluble cytochrome b562
hetero molecules


Theoretical massNumber of molelcules
Total (without water)117,2495
Polymers116,7544
Non-polymers4951
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Antibody anti-BRIL Fab Heavy Chain


Mass: 24321.084 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Spodoptera frugiperda (fall armyworm)
#2: Antibody anti-Fab Nanobody synthetic construct


Mass: 13390.644 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)
#3: Antibody anti-BRIL Fab Light Chain


Mass: 23353.947 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)
#4: Protein Prostaglandin D2 receptor,Soluble cytochrome b562 / PGD receptor / PGD2 receptor / Prostanoid DP receptor / Cytochrome b-562


Mass: 55687.906 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PTGDR, cybC / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q13258, UniProt: P0ABE7
#5: Chemical ChemComp-A1BIL / [2-chloro-5-(2,6-dimethyl-4-{[(2S)-4-methyl-3,4-dihydro-2H-1,4-benzoxazin-2-yl]methoxy}benzamido)phenyl]acetic acid / ONO-2550289


Mass: 494.967 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C27H27ClN2O5 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: ONO2550289 bound to DP1bRIL-BAG2Fab-Nb complex / Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 65 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1cryoSPARC4.7.0particle selection
9PHENIXmodel refinement
13cryoSPARC4.7.03D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.89 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 415106 / Symmetry type: POINT
RefinementHighest resolution: 2.89 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0037680
ELECTRON MICROSCOPYf_angle_d0.62710426
ELECTRON MICROSCOPYf_dihedral_angle_d4.4761060
ELECTRON MICROSCOPYf_chiral_restr0.0441173
ELECTRON MICROSCOPYf_plane_restr0.0051323

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