8F76

Human olfactory receptor OR51E2 bound to propionate in complex with miniGs399


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 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

Structural basis of odorant recognition by a human odorant receptor.

Billesbolle, C.B.de March, C.A.van der Velden, W.J.C.Ma, N.Tewari, J.Del Torrent, C.L.Li, L.Faust, B.Vaidehi, N.Matsunami, H.Manglik, A.

(2023) Nature 615: 742-749

  • DOI: https://doi.org/10.1038/s41586-023-05798-y
  • Primary Citation of Related Structures:  
    8F76

  • PubMed Abstract: 

    Our sense of smell enables us to navigate a vast space of chemically diverse odour molecules. This task is accomplished by the combinatorial activation of approximately 400 odorant G protein-coupled receptors encoded in the human genome 1-3 . How odorants are recognized by odorant receptors remains unclear. Here we provide mechanistic insight into how an odorant binds to a human odorant receptor. Using cryo-electron microscopy, we determined the structure of the active human odorant receptor OR51E2 bound to the fatty acid propionate. Propionate is bound within an occluded pocket in OR51E2 and makes specific contacts critical to receptor activation. Mutation of the odorant-binding pocket in OR51E2 alters the recognition spectrum for fatty acids of varying chain length, suggesting that odorant selectivity is controlled by tight packing interactions between an odorant and an odorant receptor. Molecular dynamics simulations demonstrate that propionate-induced conformational changes in extracellular loop 3 activate OR51E2. Together, our studies provide a high-resolution view of chemical recognition of an odorant by a vertebrate odorant receptor, providing insight into how this large family of G protein-coupled receptors enables our olfactory sense.


  • Organizational Affiliation

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


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Olfactory receptor 51E2330Homo sapiensMutation(s): 0 
Gene Names: OR51E2PSGR
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H255 (Homo sapiens)
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Go to UniProtKB:  Q9H255
PHAROS:  Q9H255
GTEx:  ENSG00000167332 
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Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H255
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Nanobody 35B [auth N]145Lama glamaMutation(s): 0 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(s) subunit alpha isoforms shortC [auth X]261Homo sapiensMutation(s): 0 
Gene Names: GNASGNAS1GSP
Membrane Entity: Yes 
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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: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1D [auth Y]370Homo sapiensMutation(s): 0 
Gene Names: GNB1
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Find proteins for P62873 (Homo sapiens)
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Go to UniProtKB:  P62873
PHAROS:  P62873
GTEx:  ENSG00000078369 
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UniProt GroupP62873
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2E [auth Z]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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Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute on Deafness and Other Communication Disorders (NIH/NIDCD)United StatesR01DC020353

Revision History  (Full details and data files)

  • Version 1.0: 2023-03-22
    Type: Initial release
  • Version 1.1: 2023-04-05
    Changes: Database references