+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6wel | |||||||||||||||||||||
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タイトル | Structure of cGMP-unbound F403V/V407A mutant TAX-4 reconstituted in lipid nanodiscs | |||||||||||||||||||||
要素 | Cyclic nucleotide-gated cation channel | |||||||||||||||||||||
キーワード | MEMBRANE PROTEIN / Ion channel / vision / olfaction / phototransduction / blindness / cyclic nucleotide-gated channel / lipid nanodiscs | |||||||||||||||||||||
機能・相同性 | 機能・相同性情報 detection of carbon dioxide / detection of chemical stimulus involved in sensory perception / Activation of the phototransduction cascade / Inactivation, recovery and regulation of the phototransduction cascade / VxPx cargo-targeting to cilium / ciliary inversin compartment / thermosensory behavior / positive regulation of growth rate / olfactory behavior / intracellular cyclic nucleotide activated cation channel complex ...detection of carbon dioxide / detection of chemical stimulus involved in sensory perception / Activation of the phototransduction cascade / Inactivation, recovery and regulation of the phototransduction cascade / VxPx cargo-targeting to cilium / ciliary inversin compartment / thermosensory behavior / positive regulation of growth rate / olfactory behavior / intracellular cyclic nucleotide activated cation channel complex / intracellularly cGMP-activated cation channel activity / aerotaxis / chemosensory behavior / multicellular organismal reproductive process / intracellularly cAMP-activated cation channel activity / G protein-coupled receptor signaling pathway coupled to cGMP nucleotide second messenger / cation channel complex / response to oxygen levels / thermotaxis / non-motile cilium / regulation of neuron differentiation / regulation of axon extension / negative regulation of cGMP-mediated signaling / monoatomic cation transmembrane transport / phototransduction / cGMP binding / voltage-gated potassium channel activity / response to hyperoxia / neuron projection morphogenesis / calcium-mediated signaling / chemotaxis / dendrite / protein-containing complex binding / positive regulation of gene expression / positive regulation of transcription by RNA polymerase II / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||||||||||||||
生物種 | Caenorhabditis elegans (センチュウ) | |||||||||||||||||||||
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: 2.5 Å | |||||||||||||||||||||
データ登録者 | Zheng, X. / Fu, Z. / Su, D. / Zhang, Y. / Li, M. / Pan, Y. / Li, H. / Li, S. / Grassucci, R.A. / Ren, Z. ...Zheng, X. / Fu, Z. / Su, D. / Zhang, Y. / Li, M. / Pan, Y. / Li, H. / Li, S. / Grassucci, R.A. / Ren, Z. / Hu, Z. / Li, X. / Zhou, M. / Li, G. / Frank, J. / Yang, J. | |||||||||||||||||||||
資金援助 | 米国, 中国, 6件
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引用 | ジャーナル: Nat Struct Mol Biol / 年: 2020 タイトル: Mechanism of ligand activation of a eukaryotic cyclic nucleotide-gated channel. 著者: Xiangdong Zheng / Ziao Fu / Deyuan Su / Yuebin Zhang / Minghui Li / Yaping Pan / Huan Li / Shufang Li / Robert A Grassucci / Zhenning Ren / Zhengshan Hu / Xueming Li / Ming Zhou / Guohui Li / ...著者: Xiangdong Zheng / Ziao Fu / Deyuan Su / Yuebin Zhang / Minghui Li / Yaping Pan / Huan Li / Shufang Li / Robert A Grassucci / Zhenning Ren / Zhengshan Hu / Xueming Li / Ming Zhou / Guohui Li / Joachim Frank / Jian Yang / 要旨: Cyclic nucleotide-gated (CNG) channels convert cyclic nucleotide (CN) binding and unbinding into electrical signals in sensory receptors and neurons. The molecular conformational changes underpinning ...Cyclic nucleotide-gated (CNG) channels convert cyclic nucleotide (CN) binding and unbinding into electrical signals in sensory receptors and neurons. The molecular conformational changes underpinning ligand activation are largely undefined. We report both closed- and open-state atomic cryo-EM structures of a full-length Caenorhabditis elegans cyclic GMP-activated channel TAX-4, reconstituted in lipid nanodiscs. These structures, together with computational and functional analyses and a mutant channel structure, reveal a double-barrier hydrophobic gate formed by two S6 amino acids in the central cavity. cGMP binding produces global conformational changes that open the cavity gate located ~52 Å away but do not alter the structure of the selectivity filter-the commonly presumed activation gate. Our work provides mechanistic insights into the allosteric gating and regulation of CN-gated and nucleotide-modulated channels and CNG channel-related channelopathies. | |||||||||||||||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6wel.cif.gz | 407.5 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6wel.ent.gz | 327.4 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6wel.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 6wel_validation.pdf.gz | 1.6 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6wel_full_validation.pdf.gz | 1.7 MB | 表示 | |
XML形式データ | 6wel_validation.xml.gz | 67.4 KB | 表示 | |
CIF形式データ | 6wel_validation.cif.gz | 93.7 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/we/6wel ftp://data.pdbj.org/pub/pdb/validation_reports/we/6wel | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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-要素
#1: タンパク質 | 分子量: 83914.523 Da / 分子数: 4 / 変異: F403V, V407A / 由来タイプ: 組換発現 由来: (組換発現) Caenorhabditis elegans (センチュウ) 遺伝子: tax-4, ZC84.2 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: Q03611 #2: 化合物 | ChemComp-CPL / #3: 化合物 | ChemComp-PX2 / #4: 化合物 | ChemComp-NA / | 研究の焦点であるリガンドがあるか | Y | Has protein modification | Y | |
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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 |
-試料調製
構成要素 | 名称: Structure of cGMP-unbound F403V/V407A mutant TAX-4 reconstituted in lipid nanodiscs タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Caenorhabditis elegans (センチュウ) |
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE-PROPANE |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: OTHER |
撮影 | 電子線照射量: 56.45 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
EMソフトウェア |
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CTF補正 | タイプ: NONE | |||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 1877870 | |||||||||||||||||||||||||||||||||
対称性 | 点対称性: C4 (4回回転対称) | |||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 445131 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT | |||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 5H3O Accession code: 5H3O / Source name: PDB / タイプ: experimental model |