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- PDB-3j5p: Structure of TRPV1 ion channel determined by single particle elec... -

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Basic information

Entry
Database: PDB / ID: 3j5p
TitleStructure of TRPV1 ion channel determined by single particle electron cryo-microscopy
ComponentsTransient receptor potential cation channel subfamily V member 1
KeywordsTRANSPORT PROTEIN / TRPV1 channel
Function / homology
Function and homology information


negative regulation of establishment of blood-brain barrier / response to capsazepine / sensory perception of mechanical stimulus / peptide secretion / cellular response to temperature stimulus / excitatory extracellular ligand-gated monoatomic ion channel activity / temperature-gated ion channel activity / detection of chemical stimulus involved in sensory perception of pain / TRP channels / smooth muscle contraction involved in micturition ...negative regulation of establishment of blood-brain barrier / response to capsazepine / sensory perception of mechanical stimulus / peptide secretion / cellular response to temperature stimulus / excitatory extracellular ligand-gated monoatomic ion channel activity / temperature-gated ion channel activity / detection of chemical stimulus involved in sensory perception of pain / TRP channels / smooth muscle contraction involved in micturition / fever generation / urinary bladder smooth muscle contraction / detection of temperature stimulus involved in thermoception / thermoception / cellular response to acidic pH / negative regulation of systemic arterial blood pressure / response to pH / chloride channel regulator activity / dendritic spine membrane / glutamate secretion / monoatomic cation transmembrane transporter activity / negative regulation of heart rate / ligand-gated monoatomic ion channel activity / response to pain / temperature homeostasis / diet induced thermogenesis / cellular response to alkaloid / cellular response to ATP / cellular response to cytokine stimulus / detection of temperature stimulus involved in sensory perception of pain / intracellularly gated calcium channel activity / behavioral response to pain / negative regulation of mitochondrial membrane potential / calcium ion import across plasma membrane / monoatomic cation channel activity / extracellular ligand-gated monoatomic ion channel activity / sensory perception of pain / phosphatidylinositol binding / phosphoprotein binding / microglial cell activation / cellular response to nerve growth factor stimulus / response to peptide hormone / GABA-ergic synapse / calcium ion transmembrane transport / cellular response to growth factor stimulus / lipid metabolic process / calcium channel activity / positive regulation of nitric oxide biosynthetic process / cellular response to tumor necrosis factor / calcium ion transport / transmembrane signaling receptor activity / sensory perception of taste / cellular response to heat / positive regulation of cytosolic calcium ion concentration / response to heat / monoatomic ion transmembrane transport / protein homotetramerization / postsynaptic membrane / calmodulin binding / neuron projection / positive regulation of apoptotic process / external side of plasma membrane / neuronal cell body / dendrite / negative regulation of transcription by RNA polymerase II / ATP binding / metal ion binding / identical protein binding / membrane / plasma membrane
Similarity search - Function
Ankyrin repeat-containing domain / 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 ...Ankyrin repeat-containing domain / 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 / Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat / Ion transport domain / Ion transport protein / Alpha Horseshoe / Mainly Alpha
Similarity search - Domain/homology
Transient receptor potential cation channel subfamily V member 1
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.275 Å
AuthorsLiao, M. / Cao, E. / Julius, D. / Cheng, Y.
CitationJournal: Nature / Year: 2013
Title: Structure of the TRPV1 ion channel determined by electron cryo-microscopy.
Authors: Maofu Liao / Erhu Cao / David Julius / Yifan Cheng /
Abstract: Transient receptor potential (TRP) channels are sensors for a wide range of cellular and environmental signals, but elucidating how these channels respond to physical and chemical stimuli has been ...Transient receptor potential (TRP) channels are sensors for a wide range of cellular and environmental signals, but elucidating how these channels respond to physical and chemical stimuli has been hampered by a lack of detailed structural information. Here we exploit advances in electron cryo-microscopy to determine the structure of a mammalian TRP channel, TRPV1, at 3.4 Å resolution, breaking the side-chain resolution barrier for membrane proteins without crystallization. Like voltage-gated channels, TRPV1 exhibits four-fold symmetry around a central ion pathway formed by transmembrane segments 5-6 (S5-S6) and the intervening pore loop, which is flanked by S1-S4 voltage-sensor-like domains. TRPV1 has a wide extracellular 'mouth' with a short selectivity filter. The conserved 'TRP domain' interacts with the S4-S5 linker, consistent with its contribution to allosteric modulation. Subunit organization is facilitated by interactions among cytoplasmic domains, including amino-terminal ankyrin repeats. These observations provide a structural blueprint for understanding unique aspects of TRP channel function.
History
DepositionOct 28, 2013Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 4, 2013Provider: repository / Type: Initial release
Revision 1.1Dec 11, 2013Group: Database references
Revision 1.2Dec 18, 2013Group: Database references
Revision 1.3Jul 18, 2018Group: Data collection / Category: em_software / Item: _em_software.image_processing_id / _em_software.name
Revision 1.4Feb 21, 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
B: Transient receptor potential cation channel subfamily V member 1
A: Transient receptor potential cation channel subfamily V member 1
C: Transient receptor potential cation channel subfamily V member 1
D: Transient receptor potential cation channel subfamily V member 1


Theoretical massNumber of molelcules
Total (without water)272,9694
Polymers272,9694
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein
Transient receptor potential cation channel subfamily V member 1 / TrpV1 / Capsaicin receptor / Osm-9-like TRP channel 1 / OTRPC1 / Vanilloid receptor 1 / Vanilloid ...TrpV1 / Capsaicin receptor / Osm-9-like TRP channel 1 / OTRPC1 / Vanilloid receptor 1 / Vanilloid receptor type 1-like


Mass: 68242.156 Da / Num. of mol.: 4 / Fragment: SEE REMARK 999
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Trpv1, Vr1, Vr1l / Plasmid: pFastBac1 / Cell line (production host): HEK293S GnTI / Production host: Homo sapiens (human) / References: UniProt: O35433
Sequence detailsTHE TRPV1 CONSTRUCT COMPRISES RESIDUES 110-603 AND 627-764, WITH RESIDUES 604-626 DELETED. RESIDUES ...THE TRPV1 CONSTRUCT COMPRISES RESIDUES 110-603 AND 627-764, WITH RESIDUES 604-626 DELETED. RESIDUES 719-764 ARE NOT MODELED, WITH THE EXCEPTION OF 11 RESIDUES (NUMBERED 752-762 IN THE COORDINATES) WHOSE IDENTITIES ARE NOT KNOWN.

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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: Rat TRPV1 / Type: COMPLEX / Details: Tetramer
Molecular weightValue: 0.3 MDa / Experimental value: NO
Buffer solutionName: 150 mM NaCl, 20 mM HEPES, 2 mM TCEP / pH: 7.4 / Details: 150 mM NaCl, 20 mM HEPES, 2 mM TCEP
SpecimenConc.: 0.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: 400 mesh Quantifoil grid
VitrificationInstrument: FEI VITROBOT MARK III / Cryogen name: ETHANE / Temp: 120 K / Humidity: 90 %
Details: Blot for 6 seconds before plunging into liquid ethane (FEI VITROBOT MARK III)
Method: Blot for 6 sec

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Electron microscopy imaging

Experimental equipment
Model: Tecnai Polara / Image courtesy: FEI Company
MicroscopyModel: FEI POLARA 300 / Date: Jan 1, 2013
Details: K2 Summit in super-resolution counting mode. Motion correction as described in Li et al. (2013) Nature Methods.
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 31000 X / Calibrated magnification: 31000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 1500 nm / Cs: 2 mm / Camera length: 0 mm
Specimen holderSpecimen holder model: OTHER / Specimen holder type: FEI Polara cartridge
Image recordingElectron dose: 21 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)
Details: Operated in super-resolution counting mode, dose fractionation
Image scansNum. digital images: 946
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthRelative weight: 1

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Processing

EM softwareName: RELION / Category: 3D reconstruction
CTF correctionDetails: Each particle
SymmetryPoint symmetry: C4 (4 fold cyclic)
3D reconstructionMethod: Maximum likelihood / Resolution: 3.275 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 35645 / Nominal pixel size: 1.2156 Å / Actual pixel size: 1.2156 Å
Details: The entire ankyrin structure was fitted as a single rigid body. As a result, the first two ankyrin repeats (UNP residues 111-199) are included but are not well defined by the experimental ...Details: The entire ankyrin structure was fitted as a single rigid body. As a result, the first two ankyrin repeats (UNP residues 111-199) are included but are not well defined by the experimental density. (Single particle details: 3D classification, refinement, and reconstruction were performed using RELION) (Single particle--Applied symmetry: C4)
Refinement type: HALF-MAPS REFINED INDEPENDENTLY / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL / Space: REAL
Details: REFINEMENT PROTOCOL--de novo model building DETAILS--The entire ankyrin structure was fitted as a single rigid body. As a result, the first two ankyrin repeats (UNP residues 111-199) are ...Details: REFINEMENT PROTOCOL--de novo model building DETAILS--The entire ankyrin structure was fitted as a single rigid body. As a result, the first two ankyrin repeats (UNP residues 111-199) are included but are not well defined by the experimental density.
Refinement stepCycle: LAST
ProteinNucleic acidLigandSolventTotal
Num. atoms18636 0 0 0 18636

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