+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7vq2 | |||||||||
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タイトル | Structure of Apo-hsTRPM2 channel TM domain | |||||||||
要素 | Transient receptor potential cation channel subfamily M member 2 | |||||||||
キーワード | TRANSPORT PROTEIN / channel / trpm2 / Selectivity Filter / TM domain | |||||||||
機能・相同性 | 機能・相同性情報 cellular response to purine-containing compound / mono-ADP-D-ribose binding / manganese ion transmembrane transporter activity / zinc ion transmembrane transport / dendritic cell differentiation / response to purine-containing compound / ligand-gated calcium channel activity / regulation of filopodium assembly / cellular response to temperature stimulus / response to hydroperoxide ...cellular response to purine-containing compound / mono-ADP-D-ribose binding / manganese ion transmembrane transporter activity / zinc ion transmembrane transport / dendritic cell differentiation / response to purine-containing compound / ligand-gated calcium channel activity / regulation of filopodium assembly / cellular response to temperature stimulus / response to hydroperoxide / TRP channels / dendritic cell chemotaxis / sodium channel activity / calcium ion transmembrane import into cytosol / temperature homeostasis / calcium ion import across plasma membrane / intracellularly gated calcium channel activity / tertiary granule membrane / ficolin-1-rich granule membrane / monoatomic cation channel activity / specific granule membrane / release of sequestered calcium ion into cytosol / cellular response to calcium ion / cell projection / regulation of actin cytoskeleton organization / calcium ion transmembrane transport / cytoplasmic vesicle membrane / calcium channel activity / cellular response to hydrogen peroxide / calcium ion transport / response to heat / perikaryon / protein homotetramerization / lysosome / lysosomal membrane / calcium ion binding / Neutrophil degranulation / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
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: 3.68 Å | |||||||||
データ登録者 | Yu, X.F. / Xie, Y. / Zhang, X.K. / Ma, C. / Guo, J.T. / Yang, F. / Yang, W. | |||||||||
資金援助 | 中国, 2件
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引用 | ジャーナル: Cell Rep / 年: 2021 タイトル: Structural and functional basis of the selectivity filter as a gate in human TRPM2 channel. 著者: Xiafei Yu / Yuan Xie / Xiaokang Zhang / Cheng Ma / Likun Liu / Wenxuan Zhen / Lingyi Xu / Jianmin Zhang / Yan Liang / Lixia Zhao / Xiuxia Gao / Peilin Yu / Jianhong Luo / Lin-Hua Jiang / Yan ...著者: Xiafei Yu / Yuan Xie / Xiaokang Zhang / Cheng Ma / Likun Liu / Wenxuan Zhen / Lingyi Xu / Jianmin Zhang / Yan Liang / Lixia Zhao / Xiuxia Gao / Peilin Yu / Jianhong Luo / Lin-Hua Jiang / Yan Nie / Fan Yang / Jiangtao Guo / Wei Yang / 要旨: Transient receptor potential melastatin 2 (TRPM2), a Ca-permeable cation channel, is gated by intracellular adenosine diphosphate ribose (ADPR), Ca, warm temperature, and oxidative stress. It is ...Transient receptor potential melastatin 2 (TRPM2), a Ca-permeable cation channel, is gated by intracellular adenosine diphosphate ribose (ADPR), Ca, warm temperature, and oxidative stress. It is critically involved in physiological and pathological processes ranging from inflammation to stroke to neurodegeneration. At present, the channel's gating and ion permeation mechanisms, such as the location and identity of the selectivity filter, remain ambiguous. Here, we report the cryo-electron microscopy (cryo-EM) structure of human TRPM2 in nanodisc in the ligand-free state. Cryo-EM map-guided computational modeling and patch-clamp recording further identify a quadruple-residue motif as the ion selectivity filter, which adopts a restrictive conformation in the closed state and acts as a gate, profoundly contrasting with its widely open conformation in the Nematostella vectensis TRPM2. Our study reveals the gating of human TRPM2 by the filter and demonstrates the feasibility of using cryo-EM in conjunction with computational modeling and functional studies to garner structural information for intrinsically dynamic but functionally important domains. | |||||||||
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 | 7vq2.cif.gz | 466.5 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7vq2.ent.gz | 394.9 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7vq2.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 | 7vq2_validation.pdf.gz | 807.1 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7vq2_full_validation.pdf.gz | 818.5 KB | 表示 | |
XML形式データ | 7vq2_validation.xml.gz | 42.2 KB | 表示 | |
CIF形式データ | 7vq2_validation.cif.gz | 58.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/vq/7vq2 ftp://data.pdbj.org/pub/pdb/validation_reports/vq/7vq2 | 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: 40967.398 Da / 分子数: 4 / 断片: TM domain / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: TRPM2, EREG1, KNP3, LTRPC2, TRPC7 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: O94759 |
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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: TRPM2 / タイプ: CELL / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 8 |
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 |
-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: BRIGHT FIELD |
撮影 | 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3次元再構成 | 解像度: 3.68 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 68530 / 対称性のタイプ: POINT |