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
Transient receptor potential cation channel subfamily V member 5 / Transient receptor potential cation channel subfamily V member 5/6 / Transient receptor potential cation channel subfamily V / Ankyrin repeat / Ankyrin repeats (3 copies) / Ankyrin repeat profile. / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / Ankyrin repeat-containing domain superfamily ...Transient receptor potential cation channel subfamily V member 5 / Transient receptor potential cation channel subfamily V member 5/6 / Transient receptor potential cation channel subfamily V / Ankyrin repeat / 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
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
NIGMS 1R01GM103899-01A1
United States
Citation
Journal: Nat Struct Mol Biol / Year: 2018 Title: Structural basis of TRPV5 channel inhibition by econazole revealed by cryo-EM. Authors: Taylor E T Hughes / David T Lodowski / Kevin W Huynh / Aysenur Yazici / John Del Rosario / Abhijeet Kapoor / Sandip Basak / Amrita Samanta / Xu Han / Sudha Chakrapani / Z Hong Zhou / Marta ...Authors: Taylor E T Hughes / David T Lodowski / Kevin W Huynh / Aysenur Yazici / John Del Rosario / Abhijeet Kapoor / Sandip Basak / Amrita Samanta / Xu Han / Sudha Chakrapani / Z Hong Zhou / Marta Filizola / Tibor Rohacs / Seungil Han / Vera Y Moiseenkova-Bell / Abstract: The transient receptor potential vanilloid 5 (TRPV5) channel is a member of the transient receptor potential (TRP) channel family, which is highly selective for Ca, that is present primarily at the ...The transient receptor potential vanilloid 5 (TRPV5) channel is a member of the transient receptor potential (TRP) channel family, which is highly selective for Ca, that is present primarily at the apical membrane of distal tubule epithelial cells in the kidney and plays a key role in Ca reabsorption. Here we present the structure of the full-length rabbit TRPV5 channel as determined using cryo-EM in complex with its inhibitor econazole. This structure reveals that econazole resides in a hydrophobic pocket analogous to that occupied by phosphatidylinositides and vanilloids in TRPV1, thus suggesting conserved mechanisms for ligand recognition and lipid binding among TRPV channels. The econazole-bound TRPV5 structure adopts a closed conformation with a distinct lower gate that occludes Ca permeation through the channel. Structural comparisons between TRPV5 and other TRPV channels, complemented with molecular dynamics (MD) simulations of the econazole-bound TRPV5 structure, allowed us to gain mechanistic insight into TRPV5 channel inhibition by small molecules.
Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lens
Mode: BRIGHT FIELD / Nominal magnification: 45455 X / Cs: 2.7 mm
Image recording
Average exposure time: 0.2 sec. / Electron dose: 2 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of real images: 3313
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