8FHH image
Entry Detail
PDB ID:
8FHH
EMDB ID:
Title:
Wildtype rabbit TRPV5 in nanodiscs in the presence of oleoyl coenzyme A, Closed stated
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2022-12-14
Release Date:
2023-11-01
Method Details:
Experimental Method:
Resolution:
3.09 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Transient receptor potential cation channel subfamily V member 5
Chain IDs:A, B, C, D
Chain Length:739
Number of Molecules:4
Biological Source:Oryctolagus cuniculus
Primary Citation
Structural basis of the activation of TRPV5 channels by long-chain acyl-Coenzyme-A.
Nat Commun 14 5883 5883 (2023)
PMID: 37735536 DOI: 10.1038/s41467-023-41577-z

Abstact

Long-chain acyl-coenzyme A (LC-CoA) is a crucial metabolic intermediate that plays important cellular regulatory roles, including activation and inhibition of ion channels. The structural basis of ion channel regulation by LC-CoA is not known. Transient receptor potential vanilloid 5 and 6 (TRPV5 and TRPV6) are epithelial calcium-selective ion channels. Here, we demonstrate that LC-CoA activates TRPV5 and TRPV6 in inside-out patches, and both exogenously supplied and endogenously produced LC-CoA can substitute for the natural ligand phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2) in maintaining channel activity in intact cells. Utilizing cryo-electron microscopy, we determined the structure of LC-CoA-bound TRPV5, revealing an open configuration with LC-CoA occupying the same binding site as PI(4,5)P2 in previous studies. This is consistent with our finding that PI(4,5)P2 could not further activate the channels in the presence of LC-CoA. Our data provide molecular insights into ion channel regulation by a metabolic signaling molecule.

Legend

Protein

Chemical

Disease

Primary Citation of related structures