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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 6wkn | |||||||||
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タイトル | PL-bound rat TRPV2 in nanodiscs | |||||||||
![]() | Transient receptor potential cation channel subfamily V member 2 | |||||||||
![]() | TRANSPORT PROTEIN / TRP channel / TRPV2 / piperlongumine / ion channel | |||||||||
機能・相同性 | ![]() growth cone membrane / TRP channels / response to temperature stimulus / positive regulation of calcium ion import / calcium ion import across plasma membrane / axonal growth cone / positive regulation of axon extension / monoatomic cation channel activity / endomembrane system / calcium channel activity ...growth cone membrane / TRP channels / response to temperature stimulus / positive regulation of calcium ion import / calcium ion import across plasma membrane / axonal growth cone / positive regulation of axon extension / monoatomic cation channel activity / endomembrane system / calcium channel activity / melanosome / lamellipodium / positive regulation of cold-induced thermogenesis / cell body / axon / negative regulation of cell population proliferation / cell surface / identical protein binding / 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: 3.46 Å | |||||||||
![]() | Pumroy, R.P. / Moiseenkova-Bell, V.Y. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Allosteric Antagonist Modulation of TRPV2 by Piperlongumine Impairs Glioblastoma Progression. 著者: João Conde / Ruth A Pumroy / Charlotte Baker / Tiago Rodrigues / Ana Guerreiro / Bárbara B Sousa / Marta C Marques / Bernardo P de Almeida / Sohyon Lee / Elvira P Leites / Daniel Picard / ...著者: João Conde / Ruth A Pumroy / Charlotte Baker / Tiago Rodrigues / Ana Guerreiro / Bárbara B Sousa / Marta C Marques / Bernardo P de Almeida / Sohyon Lee / Elvira P Leites / Daniel Picard / Amrita Samanta / Sandra H Vaz / Florian Sieglitz / Maike Langini / Marc Remke / Rafael Roque / Tobias Weiss / Michael Weller / Yuhang Liu / Seungil Han / Francisco Corzana / Vanessa A Morais / Cláudia C Faria / Tânia Carvalho / Panagis Filippakopoulos / Berend Snijder / Nuno L Barbosa-Morais / Vera Y Moiseenkova-Bell / Gonçalo J L Bernardes / ![]() ![]() ![]() ![]() ![]() ![]() 要旨: The use of computational tools to identify biological targets of natural products with anticancer properties and unknown modes of action is gaining momentum. We employed self-organizing maps to ...The use of computational tools to identify biological targets of natural products with anticancer properties and unknown modes of action is gaining momentum. We employed self-organizing maps to deconvolute the phenotypic effects of piperlongumine (PL) and establish a link to modulation of the human transient receptor potential vanilloid 2 (hTRPV2) channel. The structure of the PL-bound full-length rat TRPV2 channel was determined by cryo-EM. PL binds to a transient allosteric pocket responsible for a new mode of anticancer activity against glioblastoma (GBM) in which hTRPV2 is overexpressed. Calcium imaging experiments revealed the importance of Arg539 and Thr522 residues on the antagonistic effect of PL and calcium influx modulation of the TRPV2 channel. Downregulation of hTRPV2 reduces sensitivity to PL and decreases ROS production. Analysis of GBM patient samples associates hTRPV2 overexpression with tumor grade, disease progression, and poor prognosis. Extensive tumor abrogation and long term survival was achieved in two murine models of orthotopic GBM by formulating PL in an implantable scaffold/hydrogel for sustained local therapy. Furthermore, in primary tumor samples derived from GBM patients, we observed a selective reduction of malignant cells in response to PL . Our results establish a broadly applicable strategy, leveraging data-motivated research hypotheses for the discovery of novel means tackling cancer. | |||||||||
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構造の表示
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構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 425.8 KB | 表示 | ![]() |
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PDB形式 | ![]() | 347.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
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-検証レポート
文書・要旨 | ![]() | 1.5 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.5 MB | 表示 | |
XML形式データ | ![]() | 75.5 KB | 表示 | |
CIF形式データ | ![]() | 112 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-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: 86798.891 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() #2: 化合物 | ChemComp-LQ4 / 研究の焦点であるリガンドがあるか | 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 |
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試料調製
構成要素 | 名称: Homotetramer of full-length rat TRPV2 bound to piperlongumine タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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分子量 | 値: 0.35 MDa / 実験値: YES |
由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 8 |
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 |
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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: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 40 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
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3次元再構成 | 解像度: 3.46 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 85584 / 対称性のタイプ: POINT |