- EMDB-7133: Human TRPM4 ion channel in lipid nanodiscs in a calcium-bound state -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: EMDB / ID: EMD-7133
タイトル
Human TRPM4 ion channel in lipid nanodiscs in a calcium-bound state
マップデータ
Sharpened map of human TRPM4 ion channel in lipid nanodisc with 5 mM CaCl2. This reconstruction is of the entire molecule with C4 symmetry.
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: CALCIUM ION
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 / membrane depolarization during bundle of His cell action potential / membrane depolarization during Purkinje myocyte cell action potential / negative regulation of bone mineralization / metal ion transport / 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 / membrane depolarization during bundle of His cell action potential / membrane depolarization during Purkinje myocyte cell action potential / negative regulation of bone mineralization / metal ion transport / 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 / sodium channel activity / positive regulation of vasoconstriction / cellular response to ATP / monoatomic cation transmembrane transport / regulation of heart rate by cardiac conduction / protein sumoylation / negative regulation of osteoblast differentiation / positive regulation of fat cell differentiation / positive regulation of insulin secretion involved in cellular response to glucose stimulus / positive regulation of heart rate / positive regulation of adipose tissue development / 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 / TRPM2-like domain / 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-10127 (タイトル: Human TRPM4 ion channel in a lipid nanodisc in a calcium-bound state Data size: 84.4 Data #1: particle stacks of TRPM4 particles post 2D clean-up [picked particles - multiframe - processed])
Sharpened map of human TRPM4 ion channel in lipid nanodisc with 5 mM CaCl2. This reconstruction is focused on transmembrane domain, central coiled-coil domain, and MHR4 domain. C4 symmetry is applied.
Sharpened map of human TRPM4 ion channel in lipid nanodisc with 5 mM CaCl2. This reconstruction is focused on monomeric soluble domain without symmetry.