7CX3

Cryo-EM structure of the Taprenepag-bound EP2-Gs complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Ligand recognition, unconventional activation, and G protein coupling of the prostaglandin E 2 receptor EP2 subtype.

Qu, C.Mao, C.Xiao, P.Shen, Q.Zhong, Y.N.Yang, F.Shen, D.D.Tao, X.Zhang, H.Yan, X.Zhao, R.J.He, J.Guan, Y.Zhang, C.Hou, G.Zhang, P.J.Hou, G.Li, Z.Yu, X.Chai, R.J.Guan, Y.F.Sun, J.P.Zhang, Y.

(2021) Sci Adv 7

  • DOI: https://doi.org/10.1126/sciadv.abf1268
  • Primary Citation of Related Structures:  
    7CX2, 7CX3, 7CX4

  • PubMed Abstract: 

    Selective modulation of the heterotrimeric G protein α S subunit-coupled prostaglandin E 2 (PGE 2 ) receptor EP2 subtype is a promising therapeutic strategy for osteoporosis, ocular hypertension, neurodegenerative diseases, and cardiovascular disorders. Here, we report the cryo-electron microscopy structure of the EP2-G s complex with its endogenous agonist PGE 2 and two synthesized agonists, taprenepag and evatanepag (CP-533536). These structures revealed distinct features of EP2 within the EP receptor family in terms of its unconventional receptor activation and G protein coupling mechanisms, including activation in the absence of a typical W 6.48 "toggle switch" and coupling to G s via helix 8. Moreover, inspection of the agonist-bound EP2 structures uncovered key motifs governing ligand selectivity. Our study provides important knowledge for agonist recognition and activation mechanisms of EP2 and will facilitate the rational design of drugs targeting the PGE 2 signaling system.


  • Organizational Affiliation

    Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Prostaglandin E2 receptor EP2 subtypeA [auth R]358Homo sapiensMutation(s): 0 
Gene Names: PTGER2
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P43116 (Homo sapiens)
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Go to UniProtKB:  P43116
PHAROS:  P43116
GTEx:  ENSG00000125384 
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UniProt GroupP43116
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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]394Homo sapiensMutation(s): 8 
Gene Names: GNASGNAS1GSP
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P63092 (Homo sapiens)
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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)
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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 
Go to UniProtKB:  P59768
PHAROS:  P59768
GTEx:  ENSG00000186469 
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UniProt GroupP59768
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Nanobody-35E [auth N]128synthetic constructMutation(s): 0 
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
GNO (Subject of Investigation/LOI)
Query on GNO

Download Ideal Coordinates CCD File 
F [auth R]2-[3-[[(4-pyrazol-1-ylphenyl)methyl-pyridin-3-ylsulfonyl-amino]methyl]phenoxy]ethanoic acid
C24 H22 N4 O5 S
MFFBXYNKZHTCEY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.16
RECONSTRUCTIONRELION3.0-beta2

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-05-05
    Type: Initial release