8IQ4

Cryo-EM structure of Carboprost-bound prostaglandin-F2-alpha receptor-miniGq-Nb35 complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structures of human prostaglandin F 2 alpha receptor reveal the mechanism of ligand and G protein selectivity.

Lv, X.Gao, K.Nie, J.Zhang, X.Zhang, S.Ren, Y.Sun, X.Li, Q.Huang, J.Liu, L.Zhang, X.Zhang, W.Liu, X.

(2023) Nat Commun 14: 8136-8136

  • DOI: https://doi.org/10.1038/s41467-023-43922-8
  • Primary Citation of Related Structures:  
    8IQ4, 8IQ6

  • PubMed Abstract: 

    Prostaglandins and their receptors regulate various physiological processes. Carboprost, an analog of prostaglandin F and an agonist for the prostaglandin F2-alpha receptor (FP receptor), is clinically used to treat postpartum hemorrhage (PPH). However, off-target activation of closely related receptors such as the prostaglandin E receptor subtype EP3 (EP3 receptor) by carboprost results in side effects and limits the clinical application. Meanwhile, the FP receptor selective agonist latanoprost is not suitable to treat PPH due to its poor solubility and fast clearance. Here, we present two cryo-EM structures of the FP receptor bound to carboprost and latanoprost-FA (the free acid form of latanoprost) at 2.7 Å and 3.2 Å resolution, respectively. The structures reveal the molecular mechanism of FP receptor selectivity for both endogenous prostaglandins and clinical drugs, as well as the molecular mechanism of G protein coupling preference by the prostaglandin receptors. The structural information may guide the development of better prostaglandin drugs.


  • Organizational Affiliation

    Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Prostaglandin F2-alpha receptorA [auth R]384Homo sapiensMutation(s): 0 
Gene Names: PTGFR
Membrane Entity: Yes 
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Find proteins for P43088 (Homo sapiens)
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Go to UniProtKB:  P43088
PHAROS:  P43088
GTEx:  ENSG00000122420 
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UniProt GroupP43088
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(s) subunit alpha isoforms shortB [auth A]245Homo sapiensMutation(s): 0 
Gene Names: GNASGNAS1GSP
EC: 3.6.5
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P63092 (Homo sapiens)
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Go to UniProtKB:  P63092
PHAROS:  P63092
GTEx:  ENSG00000087460 
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UniProt GroupP63092
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1C [auth B]358Homo sapiensMutation(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 
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UniProt GroupP62873
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2D [auth G]71Homo sapiensMutation(s): 0 
Gene Names: GNG2
Membrane Entity: Yes 
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Find proteins for P59768 (Homo sapiens)
Explore P59768 
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PHAROS:  P59768
GTEx:  ENSG00000186469 
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UniProt GroupP59768
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Nanobody 35E [auth N]134Vicugna pacosMutation(s): 0 
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
87Q
Query on 87Q

Download Ideal Coordinates CCD File 
F [auth R]Z-7-[(1R,2R,3R,5S)-2-[(E,3S)-3-methyl-3-oxidanyl-oct-1-enyl]-3,5-bis(oxidanyl)cyclopentyl]hept-5-enoic acid
C21 H36 O5
DLJKPYFALUEJCK-IIELGFQLSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China81974236

Revision History  (Full details and data files)

  • Version 1.0: 2024-01-31
    Type: Initial release
  • Version 1.1: 2024-10-16
    Changes: Data collection, Structure summary