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- PDB-8ffq: Wildtype rabbit TRPV5 into nanodiscs in the presence of PI(4,5)P2... -
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Open data
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Basic information
Entry | Database: PDB / ID: 8ffq | ||||||
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Title | Wildtype rabbit TRPV5 into nanodiscs in the presence of PI(4,5)P2 and ruthenium red | ||||||
![]() | Transient receptor potential cation channel subfamily V member 5 | ||||||
![]() | MEMBRANE PROTEIN / TRPV5 / TRP Channel / Ruthenium Red / PI(4 / 5)P2 | ||||||
Function / homology | ![]() regulation of urine volume / calcium ion import across plasma membrane / calcium ion homeostasis / calcium ion transmembrane transport / calcium channel activity / calcium ion transport / protein homotetramerization / calmodulin binding / apical plasma membrane / identical protein binding ...regulation of urine volume / calcium ion import across plasma membrane / calcium ion homeostasis / calcium ion transmembrane transport / calcium channel activity / calcium ion transport / protein homotetramerization / calmodulin binding / apical plasma membrane / identical protein binding / metal ion binding / plasma membrane Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.65 Å | ||||||
![]() | De Jesus-Perez, J.J. / Fluck, E.C. / Pumroy, R.A. / Protopopova, A.D. / Rocereta, J.A. / Moiseenkova-Bell, V.Y. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Molecular details of ruthenium red pore block in TRPV channels. Authors: Ruth A Pumroy / José J De Jesús-Pérez / Anna D Protopopova / Julia A Rocereta / Edwin C Fluck / Tabea Fricke / Bo-Hyun Lee / Tibor Rohacs / Andreas Leffler / Vera Moiseenkova-Bell / ![]() ![]() ![]() Abstract: Transient receptor potential vanilloid (TRPV) channels play a critical role in calcium homeostasis, pain sensation, immunological response, and cancer progression. TRPV channels are blocked by ...Transient receptor potential vanilloid (TRPV) channels play a critical role in calcium homeostasis, pain sensation, immunological response, and cancer progression. TRPV channels are blocked by ruthenium red (RR), a universal pore blocker for a wide array of cation channels. Here we use cryo-electron microscopy to reveal the molecular details of RR block in TRPV2 and TRPV5, members of the two TRPV subfamilies. In TRPV2 activated by 2-aminoethoxydiphenyl borate, RR is tightly coordinated in the open selectivity filter, blocking ion flow and preventing channel inactivation. In TRPV5 activated by phosphatidylinositol 4,5-bisphosphate, RR blocks the selectivity filter and closes the lower gate through an interaction with polar residues in the pore vestibule. Together, our results provide a detailed understanding of TRPV subfamily pore block, the dynamic nature of the selectivity filter and allosteric communication between the selectivity filter and lower gate. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 481.3 KB | Display | ![]() |
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PDB format | ![]() | 394.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.8 MB | Display | ![]() |
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Full document | ![]() | 1.9 MB | Display | |
Data in XML | ![]() | 71.3 KB | Display | |
Data in CIF | ![]() | 105.3 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 29051MC ![]() 8fflC ![]() 8ffmC ![]() 8ffnC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 83784.586 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #2: Chemical | ChemComp-ERG / #3: Chemical | ChemComp-R2R / | #4: Chemical | ChemComp-CPL / Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Tetramer of wildtype rabbit TRPV5 into nanodiscs in complex with ruthenium red and PI(4,5)P2 Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT |
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Molecular weight | Value: 0.33514 MDa / Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 8 |
Specimen | Conc.: 2.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm |
Specimen holder | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 43 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of real images: 12412 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 6859887 | ||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C4 (4 fold cyclic) | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.65 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 368030 / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL |