9M1H | pdb_00009m1h

Cryo-EM structure of PGE2-EP1-Gq complex

• PDB DOI: https://doi.org/10.2210/pdb9M1H/pdb
• EM Map EMD-63571: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Trichoplusia ni
• Mutation(s): No 
• Membrane Protein: Yes  MemProtMD


• Deposited: 2025-02-26 Released: 2025-04-30 
• Deposition Author(s): Meng, X., Xu, Y., Xu, H.E.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.55 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural Insights into the Activation of Human Prostaglandin E2 Receptor EP1 Subtype by Prostaglandin E2

Meng, X., Xu, Y., Xu, H.E.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A1B1C1D1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 129.7 kDa 
• Atom Count: 7,055 
• Modeled Residue Count: 910 
• Deposited Residue Count: 1,179 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Prostaglandin E2 receptor EP1 subtype	A	402	Homo sapiens	Mutation(s): 0  Gene Names: PTGER1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P34995 (Homo sapiens) Explore P34995  Go to UniProtKB:  P34995
PHAROS:  P34995 GTEx:  ENSG00000160951

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short,Guanine nucleotide-binding protein G(q) subunit alpha	B	361	Homo sapiens	Mutation(s): 0  Gene Names: GNAI1, GNAS, GNAS1, GSP, GNAQ, GAQ EC: 3.6.5 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P50148 (Homo sapiens) Explore P50148  Go to UniProtKB:  P50148
PHAROS:  P50148 GTEx:  ENSG00000156052
Find proteins for P63092 (Homo sapiens) Explore P63092  Go to UniProtKB:  P63092
PHAROS:  P63092 GTEx:  ENSG00000087460
Find proteins for P63096 (Homo sapiens) Explore P63096  Go to UniProtKB:  P63096
PHAROS:  P63096 GTEx:  ENSG00000127955
UniProt Groups	P63096P63092P50148

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	C	345	Homo sapiens	Mutation(s): 0  Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens) Explore P62873  Go to UniProtKB:  P62873
PHAROS:  P62873 GTEx:  ENSG00000078369

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	D [auth G]	71	Homo sapiens	Mutation(s): 0  Gene Names: GNG2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens) Explore P59768  Go to UniProtKB:  P59768
PHAROS:  P59768 GTEx:  ENSG00000186469

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
P2E	E [auth A]	(Z)-7-[(1R,2R,3R)-3-hydroxy-2-[(E,3S)-3-hydroxyoct-1-enyl]-5-oxo-cyclopentyl]hept-5-enoic acid C20 H32 O5 XEYBRNLFEZDVAW-ARSRFYASSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.55 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-04-30 
Deposition Author(s): Meng, X., Xu, Y., Xu, H.E.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	81902085

Revision History  

• Version 1.0: 2025-04-30
  Type: Initial release