Transient Receptor Potential V Family Member 6 / TRP / channel / cNW11 / nanodiscs / human / TRPV6 / membrane protein / magnesium / ions / closed state
機能・相同性
機能・相同性情報
parathyroid hormone secretion / regulation of calcium ion-dependent exocytosis / TRP channels / calcium ion import across plasma membrane / calcium ion homeostasis / calcium channel complex / response to calcium ion / calcium ion transmembrane transport / 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 / response to calcium ion / calcium ion transmembrane transport / calcium channel activity / calcium ion transport / calmodulin binding / metal ion binding / identical protein binding / plasma membrane 類似検索 - 分子機能
Transient receptor potential cation channel subfamily V member 6 / 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 6 / 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 類似検索 - ドメイン・相同性
Transient receptor potential cation channel subfamily V member 6 類似検索 - 構成要素
National Institutes of Health/National Cancer Institute (NIH/NCI)
R01 CA206573
米国
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
R01 NS083660
米国
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
R01 NS107253
米国
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)
R01 AR078814
米国
引用
ジャーナル: Nat Commun / 年: 2025 タイトル: The locking mechanism of human TRPV6 inhibition by intracellular magnesium. 著者: Arthur Neuberger / Alexey Shalygin / Irina I Veretenenko / Yury A Trofimov / Thomas Gudermann / Vladimir Chubanov / Roman G Efremov / Alexander I Sobolevsky / 要旨: TRPV6 is a member of the vanilloid subfamily of transient receptor potential channels, which serves as the master regulator of Ca homeostasis. TRPV6 functions as a constitutively active Ca channel, ...TRPV6 is a member of the vanilloid subfamily of transient receptor potential channels, which serves as the master regulator of Ca homeostasis. TRPV6 functions as a constitutively active Ca channel, and emerging evidence indicates that its overactivity underpins the progression of several human diseases, including cancer. Hence, there is a pressing need to identify TRPV6 inhibitors in conjunction with a deep mechanistic understanding of their effects on the channel activity. Here we combine cryo-electron microscopy, mutagenesis, electrophysiology and molecular dynamics modeling to decipher the molecular mechanism of TRPV6 inhibition by intracellular Mg. Mg appears to bind to four, one per subunit, sites around the intracellular entrance to the TRPV6 channel pore, contributed by the negatively charged residues, D489 in the transmembrane helix S5 and D580 in S6. When bound to the D489-D580 site, Mg prevents the α-to-π transition in the middle of S6 that accompanies channel opening, thus maintaining S6 entirely α-helical, locking the channel in the closed state and inhibiting TRPV6-mediated currents. Further exploration of this inhibitory mechanism may help to develop future strategies for the treatment of TRPV6-associated diseases.