+Open data
-Basic information
Entry | Database: PDB / ID: 6d7s | ||||||
---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of human TRPV6-Y467A in amphipols | ||||||
Components | Transient receptor potential cation channel subfamily V member 6 | ||||||
Keywords | MEMBRANE PROTEIN / Ion channels / transporter / calcium channel / epithelial calcium channel | ||||||
Function / homology | Function and homology information parathyroid hormone secretion / regulation of calcium ion-dependent exocytosis / TRP channels / calcium ion import across plasma membrane / calcium ion homeostasis / calcium channel complex / calcium ion transmembrane transport / response to calcium ion / calcium channel activity / calcium ion transport ...parathyroid hormone secretion / regulation of calcium ion-dependent exocytosis / TRP channels / calcium ion import across plasma membrane / calcium ion homeostasis / calcium channel complex / calcium ion transmembrane transport / response to calcium ion / calcium channel activity / calcium ion transport / calmodulin binding / identical protein binding / metal ion binding / plasma membrane Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.34 Å | ||||||
Authors | Singh, A.K. / Saotome, K. / McGoldrick, L.L. / Sobolevsky, A.I. | ||||||
Funding support | United States, 1items
| ||||||
Citation | Journal: Nat Commun / Year: 2018 Title: Structural bases of TRP channel TRPV6 allosteric modulation by 2-APB. Authors: Appu K Singh / Kei Saotome / Luke L McGoldrick / Alexander I Sobolevsky / Abstract: Transient receptor potential (TRP) channels are involved in various physiological processes, including sensory transduction. The TRP channel TRPV6 mediates calcium uptake in epithelia and its ...Transient receptor potential (TRP) channels are involved in various physiological processes, including sensory transduction. The TRP channel TRPV6 mediates calcium uptake in epithelia and its expression is dramatically increased in numerous types of cancer. TRPV6 inhibitors suppress tumor growth, but the molecular mechanism of inhibition remains unknown. Here, we present crystal and cryo-EM structures of human and rat TRPV6 bound to 2-aminoethoxydiphenyl borate (2-APB), a TRPV6 inhibitor and modulator of numerous TRP channels. 2-APB binds to TRPV6 in a pocket formed by the cytoplasmic half of the S1-S4 transmembrane helix bundle. Comparing human wild-type and high-affinity mutant Y467A structures, we show that 2-APB induces TRPV6 channel closure by modulating protein-lipid interactions. Mutagenesis and functional analyses suggest that the identified 2-APB binding site might be present in other members of vanilloid subfamily TRP channels. Our findings reveal a mechanism of ion channel allosteric modulation that can be exploited for therapeutic design. | ||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6d7s.cif.gz | 416.1 KB | Display | PDBx/mmCIF format |
---|---|---|---|---|
PDB format | pdb6d7s.ent.gz | 341.5 KB | Display | PDB format |
PDBx/mmJSON format | 6d7s.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6d7s_validation.pdf.gz | 883.9 KB | Display | wwPDB validaton report |
---|---|---|---|---|
Full document | 6d7s_full_validation.pdf.gz | 904.7 KB | Display | |
Data in XML | 6d7s_validation.xml.gz | 62.8 KB | Display | |
Data in CIF | 6d7s_validation.cif.gz | 95.9 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/d7/6d7s ftp://data.pdbj.org/pub/pdb/validation_reports/d7/6d7s | HTTPS FTP |
-Related structure data
Related structure data | 7824MC 7825C 6d7oC 6d7pC 6d7qC 6d7tC 6d7vC 6d7xC M: map data used to model this data C: citing same article (ref.) |
---|---|
Similar structure data |
-Links
-Assembly
Deposited unit |
|
---|---|
1 |
|
-Components
#1: Protein | Mass: 85076.859 Da / Num. of mol.: 4 / Mutation: Y467A Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: TRPV6, ECAC2 / Production host: Homo sapiens (human) / References: UniProt: Q9H1D0 |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: TRPV6 in amphipols / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Source (natural) | Organism: Homo sapiens (human) | |||||||||||||||
Source (recombinant) | Organism: Homo sapiens (human) | |||||||||||||||
Buffer solution | pH: 8 | |||||||||||||||
Buffer component |
| |||||||||||||||
Specimen | Conc.: 0.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||
Specimen support | Grid material: GOLD | |||||||||||||||
Vitrification | Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K |
-Electron microscopy imaging
Experimental equipment | Model: Tecnai F30 / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TECNAI F30 |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: SPOT SCAN |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 67 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.11.1_2575: / Classification: refinement | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EM software |
| ||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Symmetry | Point symmetry: C4 (4 fold cyclic) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 4.34 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 115126 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
|