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基本情報
登録情報 | データベース: PDB / ID: 6bwi | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | 3.7 angstrom cryoEM structure of full length human TRPM4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Transient receptor potential cation channel subfamily M member 4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | MEMBRANE PROTEIN / CryoEM / human full length TRPM7 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() 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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
生物種 | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.7 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Zhang, J. / Li, Z. / Duan, J. / Li, J. / Clapham, D.E. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | ![]() タイトル: Structure of full-length human TRPM4. 著者: Jingjing Duan / Zongli Li / Jian Li / Ana Santa-Cruz / Silvia Sanchez-Martinez / Jin Zhang / David E Clapham / ![]() ![]() 要旨: Transient receptor potential melastatin subfamily member 4 (TRPM4) is a widely distributed, calcium-activated, monovalent-selective cation channel. Mutations in human TRPM4 (hTRPM4) result in ...Transient receptor potential melastatin subfamily member 4 (TRPM4) is a widely distributed, calcium-activated, monovalent-selective cation channel. Mutations in human TRPM4 (hTRPM4) result in progressive familial heart block. Here, we report the electron cryomicroscopy structure of hTRPM4 in a closed, Na-bound, apo state at pH 7.5 to an overall resolution of 3.7 Å. Five partially hydrated sodium ions are proposed to occupy the center of the conduction pore and the entrance to the coiled-coil domain. We identify an upper gate in the selectivity filter and a lower gate at the entrance to the cytoplasmic coiled-coil domain. Intramolecular interactions exist between the TRP domain and the S4-S5 linker, N-terminal domain, and N and C termini. Finally, we identify aromatic interactions via π-π bonds and cation-π bonds, glycosylation at an N-linked extracellular site, a pore-loop disulfide bond, and 24 lipid binding sites. We compare and contrast this structure with other TRP channels and discuss potential mechanisms of regulation and gating of human full-length TRPM4. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 542.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 431.7 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 104523.664 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q8TD43*PLUS #2: 化合物 | ChemComp-NA / #3: 化合物 | ChemComp-Y01 / #4: 糖 | ChemComp-NAG / Has protein modification | Y | 配列の詳細 | The full sample sequence is MVVPEKEQSWIPKIFKKKTCTTFIVDSTDPGGTLCQCGRPRTAHPAVAMEDAFGAAVVTVWDSDA ...The full sample sequence is MVVPEKEQSW | |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Human full length TRPM4 / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 装置: FEI VITROBOT MARK I / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 20 K |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Tecnai Polara / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI POLARA 300 |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 56 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.11.1_2575: / 分類: 精密化 | ||||||||||||||||||||||||
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EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 232930 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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