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Open data
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Basic information
Entry | Database: PDB / ID: 6x2j | ||||||
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Title | Structure of human TRPA1 in complex with agonist GNE551 | ||||||
![]() | Transient receptor potential cation channel subfamily A member 1 | ||||||
![]() | MEMBRANE PROTEIN/Agonist / TRPA1 / channel / agonist / MEMBRANE PROTEIN / MEMBRANE PROTEIN-Agonist complex | ||||||
Function / homology | ![]() temperature-gated cation channel activity / stereocilium bundle / detection of chemical stimulus involved in sensory perception of pain / thermoception / TRP channels / channel activity / : / response to pain / intracellularly gated calcium channel activity / detection of mechanical stimulus involved in sensory perception of pain ...temperature-gated cation channel activity / stereocilium bundle / detection of chemical stimulus involved in sensory perception of pain / thermoception / TRP channels / channel activity / : / response to pain / intracellularly gated calcium channel activity / detection of mechanical stimulus involved in sensory perception of pain / monoatomic ion transport / sensory perception of pain / response to cold / : / calcium ion transmembrane transport / calcium channel activity / response to organic cyclic compound / intracellular calcium ion homeostasis / cellular response to hydrogen peroxide / protein homotetramerization / cell surface receptor signaling pathway / response to xenobiotic stimulus / identical protein binding / plasma membrane Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | ||||||
![]() | Rohou, A. / Rouge, L. / Chen, H. | ||||||
![]() | ![]() Title: A Non-covalent Ligand Reveals Biased Agonism of the TRPA1 Ion Channel. Authors: Chang Liu / Rebecca Reese / Simon Vu / Lionel Rougé / Shannon D Shields / Satoko Kakiuchi-Kiyota / Huifen Chen / Kevin Johnson / Yu Patrick Shi / Tania Chernov-Rogan / Demi Maria Zabala ...Authors: Chang Liu / Rebecca Reese / Simon Vu / Lionel Rougé / Shannon D Shields / Satoko Kakiuchi-Kiyota / Huifen Chen / Kevin Johnson / Yu Patrick Shi / Tania Chernov-Rogan / Demi Maria Zabala Greiner / Pawan Bir Kohli / David Hackos / Bobby Brillantes / Christine Tam / Tianbo Li / Jianyong Wang / Brian Safina / Steve Magnuson / Matthew Volgraf / Jian Payandeh / Jie Zheng / Alexis Rohou / Jun Chen / ![]() 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 ...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. | ||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 739.6 KB | Display | ![]() |
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PDB format | ![]() | 620.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 22009MC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 72622.125 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Chemical | ChemComp-ULJ / Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: TRPA1 bound by agonist GNE551 / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT | ||||||||||||||||||||
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Molecular weight | Units: MEGADALTONS / Experimental value: NO | ||||||||||||||||||||
Source (natural) | Organism: ![]() | ||||||||||||||||||||
Source (recombinant) | Organism: ![]() ![]() | ||||||||||||||||||||
Buffer solution | pH: 8.2 | ||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.33 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||
Specimen support | Details: Solarus plasma cleaner / Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R0.6/1 | ||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K Details: Triple blot. Put blot in vitroblot Apply 3.5ul to grid, wait 30sec, blot manually Apply 3.5ul to grid, wait 30sec, blot manually, apply final 3.5ul, final blot by vitrobot (3.5s) |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 165000 X / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 1.6 sec. / Electron dose: 41.8 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 11063 |
EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV |
Image scans | Sampling size: 5 µm / Movie frames/image: 40 / Used frames/image: 1-40 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 505112 | ||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C4 (4 fold cyclic) | ||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 58837 / Algorithm: FOURIER SPACE Details: Data at spatial frequencies higher than 1/4.0 A-1 were not used during any part of the refinement. The final map was density-modified using Phenix. Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: AB INITIO MODEL / Space: REAL | ||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 6PQQ Accession code: 6PQQ / Source name: PDB / Type: experimental model |