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- PDB-6uw8: Cryo-EM structure of the human TRPV3 K169A mutant briefly exposed... -

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Basic information

Entry
Database: PDB / ID: 6uw8
TitleCryo-EM structure of the human TRPV3 K169A mutant briefly exposed to 2-APB for 3 minutes, determined in lipid nanodisc
ComponentsTransient receptor potential cation channel subfamily V member 3
KeywordsMEMBRANE PROTEIN / ion channel TRPV3
Function / homology
Function and homology information


negative regulation of hair cycle / TRP channels / response to temperature stimulus / positive regulation of calcium ion import / calcium ion transmembrane transport / calcium channel activity / lysosome / receptor complex / identical protein binding / plasma membrane / cytoplasm
Similarity search - Function
Transient receptor potential cation channel subfamily V member 1-4 / Transient receptor potential cation channel subfamily V / Ankyrin repeat / Ankyrin repeats (3 copies) / Ankyrin repeat profile. / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / Ankyrin repeat-containing domain superfamily / Ion transport domain / Ion transport protein
Similarity search - Domain/homology
Transient receptor potential cation channel subfamily V member 3
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.02 Å
AuthorsDeng, Z. / Yuan, P.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)R01NS099341 United States
CitationJournal: Nat Struct Mol Biol / Year: 2020
Title: Gating of human TRPV3 in a lipid bilayer.
Authors: Zengqin Deng / Grigory Maksaev / Michael Rau / Zili Xie / Hongzhen Hu / James A J Fitzpatrick / Peng Yuan /
Abstract: The transient receptor potential cation channel subfamily V member 3 (TRPV3) channel plays a critical role in skin physiology, and mutations in TRPV3 result in the development of a congenital skin ...The transient receptor potential cation channel subfamily V member 3 (TRPV3) channel plays a critical role in skin physiology, and mutations in TRPV3 result in the development of a congenital skin disorder, Olmsted syndrome. Here we describe multiple cryo-electron microscopy structures of human TRPV3 reconstituted into lipid nanodiscs, representing distinct functional states during the gating cycle. The ligand-free, closed conformation reveals well-ordered lipids interacting with the channel and two physical constrictions along the ion-conduction pore involving both the extracellular selectivity filter and intracellular helix bundle crossing. Both the selectivity filter and bundle crossing expand upon activation, accompanied by substantial structural rearrangements at the cytoplasmic intersubunit interface. Transition to the inactivated state involves a secondary structure change of the pore-lining helix, which contains a π-helical segment in the closed and open conformations, but becomes entirely α-helical upon inactivation. Together with electrophysiological characterization, structures of TRPV3 in a lipid membrane environment provide unique insights into channel activation and inactivation mechanisms.
History
DepositionNov 4, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 1, 2020Provider: repository / Type: Initial release
Revision 1.1Jul 22, 2020Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 1.2Mar 6, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Assembly

Deposited unit
A: Transient receptor potential cation channel subfamily V member 3
B: Transient receptor potential cation channel subfamily V member 3
C: Transient receptor potential cation channel subfamily V member 3
D: Transient receptor potential cation channel subfamily V member 3


Theoretical massNumber of molelcules
Total (without water)362,6834
Polymers362,6834
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
Transient receptor potential cation channel subfamily V member 3 / TrpV3 / Vanilloid receptor-like 3 / VRL-3


Mass: 90670.688 Da / Num. of mol.: 4 / Mutation: K169A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TRPV3 / Production host: Komagataella pastoris (fungus) / References: UniProt: Q8NET8

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: human TRPV3 / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Komagataella pastoris (fungus)
Buffer solutionpH: 8
SpecimenConc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: OTHER
Image recordingElectron dose: 62 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 4.02 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 36394 / Symmetry type: POINT

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