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- EMDB-23161: Cryo-EM structure of DkTx-bound minimal TRPV1 at the singly-bound... -

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Basic information

Entry
Database: EMDB / ID: EMD-23161
TitleCryo-EM structure of DkTx-bound minimal TRPV1 at the singly-bound state
Map data
Sample
  • Complex: minimal TRPV1 in nanodisc
    • Protein or peptide: Transient receptor potential cation channel subfamily V member 1TRPV1
Function / homology
Function and homology information


temperature-gated ion channel activity / response to capsazepine / excitatory extracellular ligand-gated monoatomic ion channel activity / negative regulation of establishment of blood-brain barrier / sensory perception of mechanical stimulus / peptide secretion / urinary bladder smooth muscle contraction / detection of chemical stimulus involved in sensory perception of pain / cellular response to temperature stimulus / smooth muscle contraction involved in micturition ...temperature-gated ion channel activity / response to capsazepine / excitatory extracellular ligand-gated monoatomic ion channel activity / negative regulation of establishment of blood-brain barrier / sensory perception of mechanical stimulus / peptide secretion / urinary bladder smooth muscle contraction / detection of chemical stimulus involved in sensory perception of pain / cellular response to temperature stimulus / smooth muscle contraction involved in micturition / TRP channels / cellular response to acidic pH / thermoception / fever generation / detection of temperature stimulus involved in thermoception / glutamate secretion / dendritic spine membrane / negative regulation of systemic arterial blood pressure / chloride channel regulator activity / response to pH / monoatomic cation transmembrane transporter activity / cellular response to ATP / response to pain / temperature homeostasis / negative regulation of heart rate / cellular response to alkaloid / diet induced thermogenesis / behavioral response to pain / extracellular ligand-gated monoatomic ion channel activity / intracellularly gated calcium channel activity / cellular response to cytokine stimulus / calcium ion import across plasma membrane / negative regulation of mitochondrial membrane potential / detection of temperature stimulus involved in sensory perception of pain / ligand-gated monoatomic ion channel activity / monoatomic cation channel activity / sensory perception of pain / response to organonitrogen compound / monoatomic ion transmembrane transport / phosphatidylinositol binding / cellular response to nerve growth factor stimulus / calcium ion transmembrane transport / phosphoprotein binding / microglial cell activation / calcium channel activity / lipid metabolic process / response to peptide hormone / cellular response to growth factor stimulus / calcium ion transport / positive regulation of nitric oxide biosynthetic process / transmembrane signaling receptor activity / cellular response to heat / cellular response to tumor necrosis factor / positive regulation of cytosolic calcium ion concentration / response to heat / postsynaptic membrane / protein homotetramerization / calmodulin binding / neuron projection / positive regulation of apoptotic process / external side of plasma membrane / dendrite / neuronal cell body / negative regulation of transcription by RNA polymerase II / ATP binding / membrane / identical protein binding / metal ion binding / plasma membrane
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 1
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.03 Å
AuthorsZhang K / Julius D / Cheng Y
Funding support France, United States, 5 items
OrganizationGrant numberCountry
Human Frontier Science Program (HFSP)LT000471/2017-L France
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01 GM098672 United States
National Institutes of Health/Office of the DirectorS10 OD021741 United States
National Institutes of Health/Office of the DirectorS10 OD020054 United States
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)R35 NS105038 United States
CitationJournal: Cell / Year: 2021
Title: Structural snapshots of TRPV1 reveal mechanism of polymodal functionality.
Authors: Kaihua Zhang / David Julius / Yifan Cheng /
Abstract: Many transient receptor potential (TRP) channels respond to diverse stimuli and conditionally conduct small and large cations. Such functional plasticity is presumably enabled by a uniquely dynamic ...Many transient receptor potential (TRP) channels respond to diverse stimuli and conditionally conduct small and large cations. Such functional plasticity is presumably enabled by a uniquely dynamic ion selectivity filter that is regulated by physiological agents. What is currently missing is a "photo series" of intermediate structural states that directly address this hypothesis and reveal specific mechanisms behind such dynamic channel regulation. Here, we exploit cryoelectron microscopy (cryo-EM) to visualize conformational transitions of the capsaicin receptor, TRPV1, as a model to understand how dynamic transitions of the selectivity filter in response to algogenic agents, including protons, vanilloid agonists, and peptide toxins, permit permeation by small and large organic cations. These structures also reveal mechanisms governing ligand binding substates, as well as allosteric coupling between key sites that are proximal to the selectivity filter and cytoplasmic gate. These insights suggest a general framework for understanding how TRP channels function as polymodal signal integrators.
History
DepositionDec 20, 2020-
Header (metadata) releaseSep 22, 2021-
Map releaseSep 22, 2021-
UpdateOct 13, 2021-
Current statusOct 13, 2021Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.007
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.007
  • Imaged by UCSF Chimera
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Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_23161.png

Downloads & links

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Map

FileDownload / File: emd_23161.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 0.8488 Å
Density
Contour LevelBy AUTHOR: 0.005 / Movie #1: 0.007
Minimum - Maximum-0.0355533 - 0.06339143
Average (Standard dev.)3.422633e-05 (±0.002046704)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 271.616 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.84880.84880.8488
M x/y/z320320320
origin x/y/z0.0000.0000.000
length x/y/z271.616271.616271.616
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS320320320
D min/max/mean-0.0360.0630.000

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Supplemental data

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Half map: #1

Fileemd_23161_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_23161_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 : minimal TRPV1 in nanodisc

EntireName: minimal TRPV1 in nanodisc
Components
  • Complex: minimal TRPV1 in nanodisc
    • Protein or peptide: Transient receptor potential cation channel subfamily V member 1TRPV1

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Supramolecule #1: minimal TRPV1 in nanodisc

SupramoleculeName: minimal TRPV1 in nanodisc / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Rattus norvegicus (Norway rat)
Recombinant expressionOrganism: Homo sapiens (human)

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

MacromoleculeName: Transient receptor potential cation channel subfamily V member 1
type: protein_or_peptide / ID: 1 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: GAMGSRLYDR RSIFDAVAQS NCQELESLLP FLQRSKKRLT DSEFKDPETG KTCLLKAMLN LHNGQNDTIA LLLDVARKTD SLKQFVNASY TDSYYKGQTA LHIAIERRNM TLVTLLVENG ADVQAAANGD FFKKTKGRPG FYFGELPLSL AACTNQLAIV KFLLQNSWQP ...String:
GAMGSRLYDR RSIFDAVAQS NCQELESLLP FLQRSKKRLT DSEFKDPETG KTCLLKAMLN LHNGQNDTIA LLLDVARKTD SLKQFVNASY TDSYYKGQTA LHIAIERRNM TLVTLLVENG ADVQAAANGD FFKKTKGRPG FYFGELPLSL AACTNQLAIV KFLLQNSWQP ADISARDSVG NTVLHALVEV ADNTVDNTKF VTSMYNEILI LGAKLHPTLK LEEITNRKGL TPLALAASSG KIGVLAYILQ REIHEPECRH LSRKFTEWAY GPVHSSLYDL SCIDTCEKNS VLEVIAYSSS ETPNRHDMLL VEPLNRLLQD KWDRFVKRIF YFNFFVYCLY MIIFTAAAYY RPVEGLPPYK LKNTVGDYFR VTGEILSVSG GVYFFFRGIQ YFLQRRPSLK SLFVDSYSEI LFFVQSLFML VSVVLYFSQR KEYVASMVFS LAMGWTNMLY YTRGFQQMGI YAVMIEKMIL RDLCRFMFVY LVFLFGFSTA VVTLIEDGKY NSLYSTCLEL FKFTIGMGDL EFTENYDFKA VFIILLLAYV ILTYILLLNM LIALMGETVN KIAQESKNIW KLQRAITILD TEKSFLKCMR KAFRSGKLLQ VGFTPDGKDD YRWCFRVDEV NWTTWNTNVG IINEDPG

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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

BufferpH: 7.4
Sugar embeddingMaterial: nanodisc
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 67.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.03 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 108641
FSC plot (resolution estimation)

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