6X2J

Structure of human TRPA1 in complex with agonist GNE551


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A Non-covalent Ligand Reveals Biased Agonism of the TRPA1 Ion Channel.

Liu, C.Reese, R.Vu, S.Rouge, L.Shields, S.D.Kakiuchi-Kiyota, S.Chen, H.Johnson, K.Shi, Y.P.Chernov-Rogan, T.Greiner, D.M.Z.Kohli, P.B.Hackos, D.Brillantes, B.Tam, C.Li, T.Wang, J.Safina, B.Magnuson, S.Volgraf, M.Payandeh, J.Zheng, J.Rohou, A.Chen, J.

(2021) Neuron 109: 273-284.e4

  • DOI: https://doi.org/10.1016/j.neuron.2020.10.014
  • Primary Citation of Related Structures:  
    6X2J

  • PubMed Abstract: 

    The TRPA1 ion channel is activated by electrophilic compounds through the covalent modification of intracellular cysteine residues. How non-covalent agonists activate the channel and whether covalent and non-covalent agonists elicit the same physiological responses are not understood. Here, we report the discovery of a non-covalent agonist, GNE551, and determine a cryo-EM structure of the TRPA1-GNE551 complex, revealing a distinct binding pocket and ligand-interaction mechanism. Unlike the covalent agonist allyl isothiocyanate, which elicits channel desensitization, tachyphylaxis, and transient pain, GNE551 activates TRPA1 into a distinct conducting state without desensitization and induces persistent pain. Furthermore, GNE551-evoked pain is relatively insensitive to antagonist treatment. Thus, we demonstrate the biased agonism of TRPA1, a finding that has important implications for the discovery of effective drugs tailored to different disease etiologies.


  • Organizational Affiliation

    Department of Biochemical Cellular Pharmacology, Genentech, 103 DNA Way, South San Francisco, CA 94080, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transient receptor potential cation channel subfamily A member 1
A, B, C, D
631Homo sapiensMutation(s): 0 
Gene Names: TRPA1ANKTM1
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for O75762 (Homo sapiens)
Explore O75762 
Go to UniProtKB:  O75762
PHAROS:  O75762
GTEx:  ENSG00000104321 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO75762
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcisTEM
MODEL REFINEMENTPHENIX
MODEL REFINEMENTCoot

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-11-18
    Type: Initial release
  • Version 1.1: 2021-02-03
    Changes: Database references
  • Version 1.2: 2024-03-06
    Changes: Data collection, Database references, Refinement description