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- PDB-6bo5: TRPV2 ion channel in partially closed state -

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Basic information

Entry
Database: PDB / ID: 6bo5
TitleTRPV2 ion channel in partially closed state
ComponentsTransient receptor potential cation channel subfamily V member 2
KeywordsMEMBRANE PROTEIN / TRP / channel / cation / closed
Function / homology
Function and homology information


growth cone membrane / TRP channels / response to temperature stimulus / positive regulation of calcium ion import / monoatomic cation transmembrane transport / endomembrane system / positive regulation of axon extension / axonal growth cone / monoatomic cation channel activity / calcium channel activity ...growth cone membrane / TRP channels / response to temperature stimulus / positive regulation of calcium ion import / monoatomic cation transmembrane transport / endomembrane system / positive regulation of axon extension / axonal growth cone / monoatomic cation channel activity / calcium channel activity / melanosome / lamellipodium / cell body / positive regulation of cold-induced thermogenesis / axon / negative regulation of cell population proliferation / cell surface / identical protein binding / plasma membrane
Similarity search - Function
Transient receptor potential cation channel subfamily V member 1-4 / Transient receptor potential cation channel subfamily V / 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 2
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsDosey, T.L. / Wang, Z.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)T32GM008280 United States
CitationJournal: Nat Struct Mol Biol / Year: 2019
Title: Structures of TRPV2 in distinct conformations provide insight into role of the pore turret.
Authors: Timothy L Dosey / Zhao Wang / Guizhen Fan / Zhixian Zhang / Irina I Serysheva / Wah Chiu / Theodore G Wensel /
Abstract: Cation channels of the transient receptor potential (TRP) family serve important physiological roles by opening in response to diverse intra- and extracellular stimuli that regulate their lower or ...Cation channels of the transient receptor potential (TRP) family serve important physiological roles by opening in response to diverse intra- and extracellular stimuli that regulate their lower or upper gates. Despite extensive studies, the mechanism coupling these gates has remained obscure. Previous structures have failed to resolve extracellular loops, known in the TRPV subfamily as 'pore turrets', which are proximal to the upper gates. We established the importance of the pore turret through activity assays and by solving structures of rat TRPV2, both with and without an intact turret at resolutions of 4.0 Å and 3.6 Å, respectively. These structures resolve the full-length pore turret and reveal fully open and partially open states of TRPV2, both with unoccupied vanilloid pockets. Our results suggest a mechanism by which physiological signals, such as lipid binding, can regulate the lower gate and couple to the upper gate through a pore-turret-facilitated mechanism.
History
DepositionNov 18, 2017Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 5, 2018Provider: repository / Type: Initial release
Revision 1.1Jun 19, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.2Jan 1, 2020Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.3Mar 13, 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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Structure visualization

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Assembly

Deposited unit
A: Transient receptor potential cation channel subfamily V member 2
B: Transient receptor potential cation channel subfamily V member 2
D: Transient receptor potential cation channel subfamily V member 2
C: Transient receptor potential cation channel subfamily V member 2


Theoretical massNumber of molelcules
Total (without water)317,9074
Polymers317,9074
Non-polymers00
Water0
1


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

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Components

#1: Protein
Transient receptor potential cation channel subfamily V member 2 / TrpV2 / Osm-9-like TRP channel 2 / OTRPC2 / Stretch-activated channel 2B / Vanilloid receptor-like ...TrpV2 / Osm-9-like TRP channel 2 / OTRPC2 / Stretch-activated channel 2B / Vanilloid receptor-like protein 1 / VRL-1


Mass: 79476.828 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Trpv2, Sac2b, Vrl1 / Production host: Saccharomyces cerevisiae (brewer's yeast) / Strain (production host): BJ5457 / References: UniProt: Q9WUD2

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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: TRPV2 in a partially open state and with a deletion in the pore turret domain (564-589).
Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightValue: .32 MDa / Experimental value: NO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Source (recombinant)Organism: Saccharomyces cerevisiae (brewer's yeast) / Plasmid: pYepm
Buffer solutionpH: 8
SpecimenConc.: 0.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: unspecified
VitrificationCryogen name: ETHANE / Humidity: 98 % / Chamber temperature: 293 K

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Electron microscopy imaging

MicroscopyModel: JEOL 3200FSC
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: SPOT SCAN
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 63 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.11.1_2575: / Classification: refinement
EM software
IDNameVersionCategory
4EMAN2CTF correction
7Cootmodel fitting
10RELION1.4final Euler assignment
12RELION1.43D reconstruction
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 160100
SymmetryPoint symmetry: C4 (4 fold cyclic)
3D reconstructionResolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 50509 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00517656
ELECTRON MICROSCOPYf_angle_d1.07624000
ELECTRON MICROSCOPYf_dihedral_angle_d5.41310268
ELECTRON MICROSCOPYf_chiral_restr0.0532764
ELECTRON MICROSCOPYf_plane_restr0.0072976

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