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- PDB-7mij: Mouse TRPV3 in MSP2N2 nanodiscs, closed state at 4 degrees Celsius -

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Basic information

Entry
Database: PDB / ID: 7mij
TitleMouse TRPV3 in MSP2N2 nanodiscs, closed state at 4 degrees Celsius
ComponentsTransient receptor potential cation channel subfamily V member 3
KeywordsMEMBRANE PROTEIN / Transient Receptor Potential V Family Member 3 / TRP channel / TRPV3 / closed state at 4 degrees Celsius / MSP2N2
Function / homology
Function and homology information


negative regulation of hair cycle / TRP channels / response to temperature stimulus / positive regulation of calcium ion import / monoatomic cation channel activity / calcium channel activity / monoatomic ion channel activity / receptor complex / membrane / identical protein binding
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
Chem-POV / Transient receptor potential cation channel subfamily V member 3
Similarity search - Component
Biological speciesMus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 1.98 Å
AuthorsNeuberger, A. / Nadezhdin, K.D. / Sobolevsky, A.I.
Funding support United States, 4items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)R01 CA206573 United States
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)R01 NS083660 United States
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)R01 NS107253 United States
National Science Foundation (NSF, United States)1818086 United States
CitationJournal: Nat Struct Mol Biol / Year: 2021
Title: Structural mechanism of heat-induced opening of a temperature-sensitive TRP channel.
Authors: Kirill D Nadezhdin / Arthur Neuberger / Yuri A Trofimov / Nikolay A Krylov / Viktor Sinica / Nikita Kupko / Viktorie Vlachova / Eleonora Zakharian / Roman G Efremov / Alexander I Sobolevsky /
Abstract: Numerous physiological functions rely on distinguishing temperature through temperature-sensitive transient receptor potential channels (thermo-TRPs). Although the function of thermo-TRPs has been ...Numerous physiological functions rely on distinguishing temperature through temperature-sensitive transient receptor potential channels (thermo-TRPs). Although the function of thermo-TRPs has been studied extensively, structural determination of their heat- and cold-activated states has remained a challenge. Here, we present cryo-EM structures of the nanodisc-reconstituted wild-type mouse TRPV3 in three distinct conformations: closed, heat-activated sensitized and open states. The heat-induced transformations of TRPV3 are accompanied by changes in the secondary structure of the S2-S3 linker and the N and C termini and represent a conformational wave that links these parts of the protein to a lipid occupying the vanilloid binding site. State-dependent differences in the behavior of bound lipids suggest their active role in thermo-TRP temperature-dependent gating. Our structural data, supported by physiological recordings and molecular dynamics simulations, provide an insight for understanding the molecular mechanism of temperature sensing.
History
DepositionApr 17, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 21, 2021Provider: repository / Type: Initial release
Revision 1.1Jul 28, 2021Group: 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

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Structure visualization

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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
hetero molecules


Theoretical massNumber of molelcules
Total (without water)397,93142
Polymers370,5234
Non-polymers27,40938
Water5,909328
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area35730 Å2
ΔGint-276 kcal/mol
Surface area119750 Å2

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Components

#1: Protein
Transient receptor potential cation channel subfamily V member 3 / TrpV3


Mass: 92630.695 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Gene: Trpv3 / Production host: Homo sapiens (human) / References: UniProt: Q8K424
#2: Chemical...
ChemComp-POV / (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate / POPC / POPC


Mass: 760.076 Da / Num. of mol.: 36 / Source method: obtained synthetically / Formula: C42H82NO8P / Comment: phospholipid*YM
#3: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Na
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 328 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN

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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: Transient receptor potential cation channel subfamily V member 3
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.9247 MDa / Experimental value: NO
Source (natural)Organism: Mus musculus (house mouse)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
1150 mMsodium chlorideNaClSodium chloride1
220 mMtris(hydroxymethyl)aminomethane1
31 mMbeta-Mercaptoethanol2-Mercaptoethanol1
44 mMEGTA1
SpecimenConc.: 1.6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 200 divisions/in. / Grid type: C-flat-1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: -2000 nm / Nominal defocus min: -800 nm / Cs: 2.7 mm
Image recordingAverage exposure time: 2.5 sec. / Electron dose: 58 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 9702
Image scansWidth: 5760 / Height: 4092

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Processing

EM software
IDNameVersionCategory
1RELION3.1particle selection
2SerialEMimage acquisition
4RELION3.1CTF correction
7Cootmodel fitting
9PHENIXmodel refinement
10RELION3.1initial Euler assignment
11RELION3.1final Euler assignment
12RELION3.1classification
13RELION3.13D reconstruction
CTF correctionType: NONE
Particle selectionNum. of particles selected: 4662531
3D reconstructionResolution: 1.98 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 372121 / Symmetry type: POINT
Atomic model buildingSpace: REAL

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