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- EMDB-40676: Human TRP channel TRPV6 in cNW30 nanodiscs inhibited by tetrahydr... -

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Basic information

Entry
Database: EMDB / ID: EMD-40676
TitleHuman TRP channel TRPV6 in cNW30 nanodiscs inhibited by tetrahydrocannabivarin (THCV)
Map data
Sample
  • Complex: sample 1
    • Protein or peptide: Transient receptor potential cation channel subfamily V member 6
  • Ligand: CHOLESTEROL HEMISUCCINATE
  • Ligand: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate
  • Ligand: Tetrahydrocannabivarin
  • Ligand: CALCIUM ION
  • Ligand: CHLORIDE ION
Keywordsphyto-cannabinoid / phytocannabinoid / cannabindoid / tetrahydrocannabivarin / THCV / transient receptor potential V family member 6 / TRP / human / channel / closed / TRPV6 / TRP channels / cancer / oncochannel / membrane protein / cNW30 / nanodiscs / circularized nanodiscs / nanodisc / vanilloid
Function / homology
Function and homology information


parathyroid hormone secretion / regulation of calcium ion-dependent exocytosis / TRP channels / calcium ion import across plasma membrane / calcium ion homeostasis / calcium channel complex / calcium ion transmembrane transport / calcium channel activity / response to calcium ion / calcium ion transport ...parathyroid hormone secretion / regulation of calcium ion-dependent exocytosis / TRP channels / calcium ion import across plasma membrane / calcium ion homeostasis / calcium channel complex / calcium ion transmembrane transport / calcium channel activity / response to calcium ion / calcium ion transport / calmodulin binding / identical protein binding / metal ion binding / plasma membrane
Similarity search - Function
Transient receptor potential cation channel subfamily V member 6 / Transient receptor potential cation channel subfamily V member 5/6 / 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 ...Transient receptor potential cation channel subfamily V member 6 / Transient receptor potential cation channel subfamily V member 5/6 / 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 6
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.79 Å
AuthorsNeuberger A / Yelshanskaya MV / Nadezhdin KD / Sobolevsky AI
Funding support United States, Germany, 5 items
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 Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)R01 AR078814 United States
German Research Foundation (DFG)464295817 Germany
CitationJournal: Nat Commun / Year: 2023
Title: Molecular pathway and structural mechanism of human oncochannel TRPV6 inhibition by the phytocannabinoid tetrahydrocannabivarin.
Authors: Arthur Neuberger / Yury A Trofimov / Maria V Yelshanskaya / Jeffrey Khau / Kirill D Nadezhdin / Lena S Khosrof / Nikolay A Krylov / Roman G Efremov / Alexander I Sobolevsky /
Abstract: The calcium-selective oncochannel TRPV6 is an important driver of cell proliferation in human cancers. Despite increasing interest of pharmacological research in developing synthetic inhibitors of ...The calcium-selective oncochannel TRPV6 is an important driver of cell proliferation in human cancers. Despite increasing interest of pharmacological research in developing synthetic inhibitors of TRPV6, natural compounds acting at this channel have been largely neglected. On the other hand, pharmacokinetics of natural small-molecule antagonists optimized by nature throughout evolution endows these compounds with a medicinal potential to serve as potent and safe next-generation anti-cancer drugs. Here we report the structure of human TRPV6 in complex with tetrahydrocannabivarin (THCV), a natural cannabinoid inhibitor extracted from Cannabis sativa. We use cryo-electron microscopy combined with electrophysiology, calcium imaging, mutagenesis, and molecular dynamics simulations to identify THCV binding sites in the portals that connect the membrane environment surrounding the protein to the central cavity of the channel pore and to characterize the allosteric mechanism of TRPV6 inhibition. We also propose the molecular pathway taken by THCV to reach its binding site. Our study provides a foundation for the development of new TRPV6-targeting drugs.
History
DepositionMay 2, 2023-
Header (metadata) releaseAug 23, 2023-
Map releaseAug 23, 2023-
UpdateAug 23, 2023-
Current statusAug 23, 2023Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_40676.png

Downloads & links

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Map

FileDownload / File: emd_40676.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 256 pix.
= 211.2 Å		0.83 Å/pix.
x 256 pix.
= 211.2 Å		0.83 Å/pix.
x 256 pix.
= 211.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.825 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.147
Minimum - Maximum-0.7552368 - 1.2776815
Average (Standard dev.)0.0042092875 (±0.044596363)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 211.2 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_40676_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_40676_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : sample 1

EntireName: sample 1
Components
  • Complex: sample 1
    • Protein or peptide: Transient receptor potential cation channel subfamily V member 6
  • Ligand: CHOLESTEROL HEMISUCCINATE
  • Ligand: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate
  • Ligand: Tetrahydrocannabivarin
  • Ligand: CALCIUM ION
  • Ligand: CHLORIDE ION

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Supramolecule #1: sample 1

SupramoleculeName: sample 1 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 76.48 KDa

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Macromolecule #1: Transient receptor potential cation channel subfamily V member 6

MacromoleculeName: Transient receptor potential cation channel subfamily V member 6
type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 76.555203 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGLSLPKEKG LILCLWSKFC RWFQRRESWA QSRDEQNLLQ QKRIWESPLL LAAKDNDVQA LNKLLKYEDC KVHQRGAMGE TALHIAALY DNLEAAMVLM EAAPELVFEP MTSELYEGQT ALHIAVVNQN MNLVRALLAR RASVSARATG TAFRRSPCNL I YFGEHPLS ...String:
MGLSLPKEKG LILCLWSKFC RWFQRRESWA QSRDEQNLLQ QKRIWESPLL LAAKDNDVQA LNKLLKYEDC KVHQRGAMGE TALHIAALY DNLEAAMVLM EAAPELVFEP MTSELYEGQT ALHIAVVNQN MNLVRALLAR RASVSARATG TAFRRSPCNL I YFGEHPLS FAACVNSEEI VRLLIEHGAD IRAQDSLGNT VLHILILQPN KTFACQMYNL LLSYDRHGDH LQPLDLVPNH QG LTPFKLA GVEGNTVMFQ HLMQKRKHTQ WTYGPLTSTL YDLTEIDSSG DEQSLLELII TTKKREARQI LDQTPVKELV SLK WKRYGR PYFCMLGAIY LLYIICFTMC CIYRPLKPRT NNRTSPRDNT LLQQKLLQEA YMTPKDDIRL VGELVTVIGA IIIL LVEVP DIFRMGVTRF FGQTILGGPF HVLIITYAFM VLVTMVMRLI SASGEVVPMS FALVLGWCNV MYFARGFQML GPFTI MIQK MIFGDLMRFC WLMAVVILGF ASAFYIIFQT EDPEELGHFY DYPMALFSTF ELFLTIIDGP ANYNVDLPFM YSITYA AFA IIATLLMLNL LIAMMGDTHW RVAHERDELW RAQIVATTVM LERKLPRCLW PRSGICGREY GLGDRWFLRV EDRQDLN RQ RIQRYAQAFH TRGSEDLDKD SVEK

UniProtKB: Transient receptor potential cation channel subfamily V member 6

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Macromolecule #2: CHOLESTEROL HEMISUCCINATE

MacromoleculeName: CHOLESTEROL HEMISUCCINATE / type: ligand / ID: 2 / Number of copies: 12 / Formula: Y01
Molecular weightTheoretical: 486.726 Da
Chemical component information

ChemComp-Y01:
CHOLESTEROL HEMISUCCINATE

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Macromolecule #3: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(tri...

MacromoleculeName: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate
type: ligand / ID: 3 / Number of copies: 28 / Formula: POV
Molecular weightTheoretical: 760.076 Da
Chemical component information

ChemComp-POV:
(2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate / phospholipid*YM

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Macromolecule #4: Tetrahydrocannabivarin

MacromoleculeName: Tetrahydrocannabivarin / type: ligand / ID: 4 / Number of copies: 8 / Formula: I8E
Molecular weightTheoretical: 286.409 Da
Chemical component information

ChemComp-I8E:
Tetrahydrocannabivarin

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Macromolecule #5: CALCIUM ION

MacromoleculeName: CALCIUM ION / type: ligand / ID: 5 / Number of copies: 1 / Formula: CA
Molecular weightTheoretical: 40.078 Da

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Macromolecule #6: CHLORIDE ION

MacromoleculeName: CHLORIDE ION / type: ligand / ID: 6 / Number of copies: 1 / Formula: CL
Molecular weightTheoretical: 35.453 Da

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration2.58 mg/mL
BufferpH: 8
Component:
ConcentrationFormulaName
150.0 mMNaClsodium chloride
20.0 mMtris(hydroxymethyl)aminomethane
1.0 mMbeta-Mercaptoethanol
0.114 mMtetrahydrocannabivarin
GridModel: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: GOLD / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV
Detailstetrameric oncochannel, human TRP channel, hTRPV6, in cNW30 lipid nanodiscs and soybean lipids in complex with and inhibited by the phytocannabinoid tetrahydrocannabivarin (THCV)

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Electron microscopy

MicroscopeTFS KRIOS
SoftwareName: SerialEM
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Digitization - Dimensions - Width: 5760 pixel / Digitization - Dimensions - Height: 4092 pixel / Number grids imaged: 1 / Number real images: 6699 / Average exposure time: 2.0 sec. / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 4502785
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.79 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 213249
Initial angle assignmentType: OTHER / Software - Name: cryoSPARC
Final angle assignmentType: OTHER / Software - Name: cryoSPARC
Final 3D classificationSoftware - Name: cryoSPARC

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Atomic model buiding 1

Initial modelPDB ID:

7s8c


Chain - Source name: PDB / Chain - Initial model type: experimental model
SoftwareName: Coot (ver. 0.9.8.1)
RefinementSpace: REAL
Output model

PDB-8sp8:
Human TRP channel TRPV6 in cNW30 nanodiscs inhibited by tetrahydrocannabivarin (THCV)

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