+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6miz | ||||||
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タイトル | Human TRPM2 ion channel in an ADPR-bound state | ||||||
要素 | Transient receptor potential cation channel subfamily M member 2 | ||||||
キーワード | MEMBRANE PROTEIN / Channel / TRPM2 / TRP / ADPR / ADP-ribose / NUDT9H / NUDT9 / calcium / ion channel | ||||||
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 / regulation of filopodium assembly / ligand-gated calcium channel activity / cellular response to temperature stimulus / TRP channels ...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 / regulation of filopodium assembly / ligand-gated calcium channel activity / cellular response to temperature stimulus / TRP channels / dendritic cell chemotaxis / sodium channel activity / calcium ion transmembrane import into cytosol / response to hydroperoxide / temperature homeostasis / calcium ion import across plasma membrane / intracellularly gated calcium channel activity / tertiary granule membrane / ficolin-1-rich granule membrane / specific granule membrane / monoatomic cation channel activity / 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: 6.1 Å | ||||||
データ登録者 | Wang, L. / Fu, T.M. / Xia, S. / Wu, H. | ||||||
引用 | ジャーナル: Science / 年: 2018 タイトル: Structures and gating mechanism of human TRPM2. 著者: Longfei Wang / Tian-Min Fu / Yiming Zhou / Shiyu Xia / Anna Greka / Hao Wu / 要旨: Transient receptor potential (TRP) melastatin 2 (TRPM2) is a cation channel associated with numerous diseases. It has a C-terminal NUDT9 homology (NUDT9H) domain responsible for binding adenosine ...Transient receptor potential (TRP) melastatin 2 (TRPM2) is a cation channel associated with numerous diseases. It has a C-terminal NUDT9 homology (NUDT9H) domain responsible for binding adenosine diphosphate (ADP)-ribose (ADPR), and both ADPR and calcium (Ca) are required for TRPM2 activation. Here we report cryo-electron microscopy structures of human TRPM2 alone, with ADPR, and with ADPR and Ca NUDT9H forms both intra- and intersubunit interactions with the N-terminal TRPM homology region (MHR1/2/3) in the apo state but undergoes conformational changes upon ADPR binding, resulting in rotation of MHR1/2 and disruption of the intersubunit interaction. The binding of Ca further engages transmembrane helices and the conserved TRP helix to cause conformational changes at the MHR arm and the lower gating pore to potentiate channel opening. These findings explain the molecular mechanism of concerted TRPM2 gating by ADPR and Ca and provide insights into the gating mechanism of other TRP channels. | ||||||
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 | 6miz.cif.gz | 939.5 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6miz.ent.gz | 775.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6miz.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 | 6miz_validation.pdf.gz | 1 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6miz_full_validation.pdf.gz | 1.1 MB | 表示 | |
XML形式データ | 6miz_validation.xml.gz | 136.8 KB | 表示 | |
CIF形式データ | 6miz_validation.cif.gz | 209.9 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/mi/6miz ftp://data.pdbj.org/pub/pdb/validation_reports/mi/6miz | 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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1 |
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-要素
#1: タンパク質 | 分子量: 171416.188 Da / 分子数: 4 / 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 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: Human TRPM2 ion channel / タイプ: COMPLEX / 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: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: unspecified |
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: 70.072 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.14_3260: / 分類: 精密化 |
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CTF補正 | タイプ: NONE |
3次元再構成 | 解像度: 6.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 49383 / 対称性のタイプ: POINT |