- EMDB-7132: Human TRPM4 ion channel in lipid nanodiscs in a calcium-free state -
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基本情報
登録情報
データベース: EMDB / ID: EMD-7132
タイトル
Human TRPM4 ion channel in lipid nanodiscs in a calcium-free state
マップデータ
Sharpened 3D density map of human TRPM4 in lipid nanodisc. This reconstruction includes the whole molecule.
試料
複合体: Human TRPM4 ion channel
タンパク質・ペプチド: Transient receptor potential cation channel subfamily M member 4
リガンド: CHOLESTEROL HEMISUCCINATE
キーワード
TRPM4 / TRPM channel / TRP channel / MEMBRANE PROTEIN
機能・相同性
機能・相同性情報
positive regulation of atrial cardiac muscle cell action potential / positive regulation of regulation of vascular associated smooth muscle cell membrane depolarization / sodium channel complex / regulation of T cell cytokine production / membrane depolarization during AV node cell action potential / metal ion transport / membrane depolarization during bundle of His cell action potential / membrane depolarization during Purkinje myocyte cell action potential / negative regulation of bone mineralization / regulation of ventricular cardiac muscle cell action potential ...positive regulation of atrial cardiac muscle cell action potential / positive regulation of regulation of vascular associated smooth muscle cell membrane depolarization / sodium channel complex / regulation of T cell cytokine production / membrane depolarization during AV node cell action potential / metal ion transport / membrane depolarization during bundle of His cell action potential / membrane depolarization during Purkinje myocyte cell action potential / negative regulation of bone mineralization / regulation of ventricular cardiac muscle cell action potential / calcium-activated cation channel activity / sodium ion import across plasma membrane / inorganic cation transmembrane transport / dendritic cell chemotaxis / TRP channels / cellular response to ATP / sodium channel activity / monoatomic cation transmembrane transport / regulation of heart rate by cardiac conduction / positive regulation of insulin secretion involved in cellular response to glucose stimulus / protein sumoylation / negative regulation of osteoblast differentiation / positive regulation of fat cell differentiation / positive regulation of heart rate / positive regulation of adipose tissue development / positive regulation of vasoconstriction / calcium-mediated signaling / calcium ion transmembrane transport / calcium channel activity / Sensory perception of sweet, bitter, and umami (glutamate) taste / positive regulation of canonical Wnt signaling pathway / positive regulation of cytosolic calcium ion concentration / protein homotetramerization / adaptive immune response / calmodulin binding / neuronal cell body / positive regulation of cell population proliferation / calcium ion binding / endoplasmic reticulum / Golgi apparatus / nucleoplasm / ATP binding / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能
TRPM, SLOG domain / : / SLOG in TRPM / Ion transport domain / Ion transport protein 類似検索 - ドメイン・相同性
Transient receptor potential cation channel subfamily M member 4 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM098672
米国
National Institutes of Health/Office of the Director
S10OD020054
米国
National Institutes of Health/Office of the Director
S10OD021741
米国
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
R01NS047723
米国
Danish Council of Independent Research
DFF-5051-00085
デンマーク
引用
ジャーナル: Science / 年: 2018 タイトル: Structure of the human TRPM4 ion channel in a lipid nanodisc. 著者: Henriette E Autzen / Alexander G Myasnikov / Melody G Campbell / Daniel Asarnow / David Julius / Yifan Cheng / 要旨: Transient receptor potential (TRP) melastatin 4 (TRPM4) is a widely expressed cation channel associated with a variety of cardiovascular disorders. TRPM4 is activated by increased intracellular ...Transient receptor potential (TRP) melastatin 4 (TRPM4) is a widely expressed cation channel associated with a variety of cardiovascular disorders. TRPM4 is activated by increased intracellular calcium in a voltage-dependent manner but, unlike many other TRP channels, is permeable to monovalent cations only. Here we present two structures of full-length human TRPM4 embedded in lipid nanodiscs at ~3-angstrom resolution, as determined by single-particle cryo-electron microscopy. These structures, with and without calcium bound, reveal a general architecture for this major subfamily of TRP channels and a well-defined calcium-binding site within the intracellular side of the S1-S4 domain. The structures correspond to two distinct closed states. Calcium binding induces conformational changes that likely prime the channel for voltage-dependent opening.
EMPIAR-10126 (タイトル: Human TRPM4 ion channel in a lipid nanodisc in a calcium-free state Data size: 162.5 Data #1: particle stacks of TRPM4 particles post 2D clean-up [picked particles - multiframe - processed])
Sharpened 3D density map of human TRPM4 in lipid nanodisc. This reconstruction includes only the cytoplasmic domain refined as a monomer, showing connectivity but fewer high-resolution features.
Sharpened 3D density map of human TRPM4 in lipid nanodisc. The reconstruction includes only the transmembrane domain and part of the cytoplasmic domain, refined with C4 symmetry
Sharpened 3D density map of human TRPM4 in lipid nanodisc. This reconstruction includes only the cytoplasmic domain refined as a monomer, showing high-resolution features but less connectivity.