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- PDB-6o20: Cryo-EM structure of TRPV5 with calmodulin bound -

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Basic information

Entry
Database: PDB / ID: 6o20
TitleCryo-EM structure of TRPV5 with calmodulin bound
Components
  • Calmodulin
  • Transient receptor potential cation channel subfamily V member 5
KeywordsMEMBRANE PROTEIN / TRP channel
Function / homology
Function and homology information


regulation of urine volume / calcium ion import across plasma membrane / calcium ion homeostasis / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / calcium ion transmembrane transport / calcium channel activity / spindle pole / calcium ion transport / myelin sheath / protein homotetramerization ...regulation of urine volume / calcium ion import across plasma membrane / calcium ion homeostasis / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / calcium ion transmembrane transport / calcium channel activity / spindle pole / calcium ion transport / myelin sheath / protein homotetramerization / calmodulin binding / apical plasma membrane / protein domain specific binding / calcium ion binding / centrosome / protein-containing complex / metal ion binding / identical protein binding / plasma membrane / cytoplasm / cytosol
Similarity search - Function
Transient receptor potential cation channel subfamily V member 5 / Transient receptor potential cation channel subfamily V member 5/6 / Ankyrin repeat-containing domain / Transient receptor potential cation channel subfamily V / : / Ankyrin repeat / EF-hand domain pair / Ankyrin repeats (3 copies) / Ankyrin repeat profile. / Ankyrin repeat region circular profile. ...Transient receptor potential cation channel subfamily V member 5 / Transient receptor potential cation channel subfamily V member 5/6 / Ankyrin repeat-containing domain / Transient receptor potential cation channel subfamily V / : / Ankyrin repeat / EF-hand domain pair / Ankyrin repeats (3 copies) / Ankyrin repeat profile. / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / EF-hand, calcium binding motif / Ankyrin repeat-containing domain superfamily / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat / EF-hand calcium-binding domain profile. / EF-hand domain / Ion transport domain / Ion transport protein / EF-hand domain pair / Alpha Horseshoe / Mainly Alpha
Similarity search - Domain/homology
Calmodulin / Transient receptor potential cation channel subfamily V member 5
Similarity search - Component
Biological speciesOryctolagus cuniculus (rabbit)
Bos taurus (domestic cattle)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsDang, S. / van Goor, M.K. / Asarnow, D. / Wang, Y. / Julius, D. / Cheng, Y. / van der Wijst, J.
Funding support United States, Netherlands, European Union, France, 8items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM098672 United States
National Institutes of Health/National Center for Research Resources (NIH/NCRR)S10OD020054 United States
National Institutes of Health/National Center for Research Resources (NIH/NCRR)S10OD021741 United States
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)R35NS105038 United States
Netherlands Organisation for Scientific Research (NWO)451001004 Netherlands
European Union (EU)748058European Union
Human Frontier Science Program (HFSP) France
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Proc Natl Acad Sci U S A / Year: 2019
Title: Structural insight into TRPV5 channel function and modulation.
Authors: Shangyu Dang / Mark K van Goor / Daniel Asarnow / YongQiang Wang / David Julius / Yifan Cheng / Jenny van der Wijst /
Abstract: TRPV5 (transient receptor potential vanilloid 5) is a unique calcium-selective TRP channel essential for calcium homeostasis. Unlike other TRPV channels, TRPV5 and its close homolog, TRPV6, do not ...TRPV5 (transient receptor potential vanilloid 5) is a unique calcium-selective TRP channel essential for calcium homeostasis. Unlike other TRPV channels, TRPV5 and its close homolog, TRPV6, do not exhibit thermosensitivity or ligand-dependent activation but are constitutively open at physiological membrane potentials and modulated by calmodulin (CaM) in a calcium-dependent manner. Here we report high-resolution electron cryomicroscopy structures of truncated and full-length TRPV5 in lipid nanodiscs, as well as of a TRPV5 W583A mutant and TRPV5 in complex with CaM. These structures highlight the mechanism of calcium regulation and reveal a flexible stoichiometry of CaM binding to TRPV5.
History
DepositionFeb 22, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 24, 2019Provider: repository / Type: Initial release
Revision 1.1May 15, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.journal_abbrev / _citation.journal_volume ..._citation.journal_abbrev / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 1.2Nov 20, 2019Group: Author supporting evidence / Category: pdbx_audit_support
Item: _pdbx_audit_support.country / _pdbx_audit_support.funding_organization
Revision 1.3Dec 18, 2019Group: Other / Category: atom_sites
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3]
Revision 1.4Mar 20, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type

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Structure visualization

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  • Deposited structure unit
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  • EMDB-0607
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Assembly

Deposited unit
A: Transient receptor potential cation channel subfamily V member 5
E: Transient receptor potential cation channel subfamily V member 5
F: Calmodulin
B: Transient receptor potential cation channel subfamily V member 5
C: Transient receptor potential cation channel subfamily V member 5
D: Transient receptor potential cation channel subfamily V member 5
hetero molecules


Theoretical massNumber of molelcules
Total (without water)433,68310
Polymers433,5226
Non-polymers1604
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area34200 Å2
ΔGint-334 kcal/mol
Surface area110720 Å2

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Components

#1: Protein
Transient receptor potential cation channel subfamily V member 5 / TrpV5 / Epithelial calcium channel 1 / ECaC1 / Osm-9-like TRP channel 3 / OTRPC3


Mass: 82899.656 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Oryctolagus cuniculus (rabbit) / Gene: Trpv5, Ecac1 / Production host: Homo sapiens (human) / References: UniProt: Q9XSM3
#2: Protein Calmodulin / CaM


Mass: 19023.912 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bos taurus (domestic cattle) / Gene: CALM, CAM
Production host: Escherichia coli-Pichia pastoris shuttle vector pPpARG4 (others)
References: UniProt: P62157
#3: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Ca
Compound detailsTHE AUTHORS STATE THAT CHAIN E IS THE C-TERMINAL END OF ONE SUBUNIT OF TRPV5, BUT THEY ARE NOT SURE WHICH ONE.

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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: Complex of TRPV5 with calmodulin bound / Type: CELL / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Oryctolagus cuniculus (rabbit)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
1150 mMsodium chlorideNaCl1
22 mMtris(2-carboxyethyl)phosphineTCEP1
350 mM4-(2-hydroxyethyl)-1-piperazineethanesulfonic acidHEPES1
45 mMcalcium chlorideCaCl21
50.02 %2,2-didecylpropane-1,3-bis-beta-D-maltopyranosideLMNG1
SpecimenConc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationCryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 293 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 10 sec. / Electron dose: 63 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 1135
Image scansMovie frames/image: 50

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Processing

EM software
IDNameCategory
1RELIONparticle selection
2SerialEMimage acquisition
4GctfCTF correction
7UCSF Chimeramodel fitting
9cryoSPARCinitial Euler assignment
10cryoSPARCfinal Euler assignment
11cisTEMclassification
12cisTEM3D reconstruction
13PHENIXmodel refinement
14Cootmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 482348 / Details: automated picked
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 34604 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL
Atomic model buildingPDB-ID: 6O1N

6o1n


Accession code: 6O1N / Source name: PDB / Type: experimental model

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