7W6P

Cryo-EM structure of the alpha2A adrenergic receptor GoA signaling complex bound to a G protein biased agonist


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.47 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

Structure-based discovery of nonopioid analgesics acting through the alpha 2A -adrenergic receptor.

Fink, E.A.Xu, J.Hubner, H.Braz, J.M.Seemann, P.Avet, C.Craik, V.Weikert, D.Schmidt, M.F.Webb, C.M.Tolmachova, N.A.Moroz, Y.S.Huang, X.P.Kalyanaraman, C.Gahbauer, S.Chen, G.Liu, Z.Jacobson, M.P.Irwin, J.J.Bouvier, M.Du, Y.Shoichet, B.K.Basbaum, A.I.Gmeiner, P.

(2022) Science 377: eabn7065-eabn7065

  • DOI: https://doi.org/10.1126/science.abn7065
  • Primary Citation of Related Structures:  
    7W6P, 7W7E

  • PubMed Abstract: 

    Because nonopioid analgesics are much sought after, we computationally docked more than 301 million virtual molecules against a validated pain target, the α 2A -adrenergic receptor (α 2A AR), seeking new α 2A AR agonists chemotypes that lack the sedation conferred by known α 2A AR drugs, such as dexmedetomidine. We identified 17 ligands with potencies as low as 12 nanomolar, many with partial agonism and preferential G i and G o signaling. Experimental structures of α 2A AR complexed with two of these agonists confirmed the docking predictions and templated further optimization. Several compounds, including the initial docking hit '9087 [mean effective concentration (EC 50 ) of 52 nanomolar] and two analogs, '7075 and PS75 (EC 50 4.1 and 4.8 nanomolar), exerted on-target analgesic activity in multiple in vivo pain models without sedation. These newly discovered agonists are interesting as therapeutic leads that lack the liabilities of opioids and the sedation of dexmedetomidine.


  • Organizational Affiliation

    Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(o) subunit alpha354Homo sapiensMutation(s): 0 
Gene Names: GNAO1
EC: 3.6.5
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P09471 (Homo sapiens)
Explore P09471 
Go to UniProtKB:  P09471
PHAROS:  P09471
GTEx:  ENSG00000087258 
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UniProt GroupP09471
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1349Homo 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: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2C [auth G]71Homo sapiensMutation(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 
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UniProt GroupP59768
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
scFvD [auth H]307Mus musculusMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Alpha-2A adrenergic receptorE [auth R]465Homo sapiensMutation(s): 0 
Gene Names: ADRA2AADRA2RADRAR
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P08913 (Homo sapiens)
Explore P08913 
Go to UniProtKB:  P08913
PHAROS:  P08913
GTEx:  ENSG00000150594 
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UniProt GroupP08913
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
W96 (Subject of Investigation/LOI)
Query on W96

Download Ideal Coordinates CCD File 
F [auth R]N-pyridin-4-ylisoquinolin-4-amine
C14 H11 N3
FLAHEXULHVZYHT-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.47 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)--

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-28
    Type: Initial release
  • Version 1.1: 2022-10-12
    Changes: Database references