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データを開く
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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Apo rat TRPV2 in nanodiscs, state 3 | |||||||||
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![]() | Ion channel / TRP channel / Membrane protein / tetramer / TRANSPORT PROTEIN | |||||||||
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 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.0 Å | |||||||||
![]() | Pumroy RA / Moiseenkova-Bell VY | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Functional and structural insights into activation of TRPV2 by weak acids. 著者: Ferdinand M Haug / Ruth A Pumroy / Akshay Sridhar / Sebastian Pantke / Florian Dimek / Tabea C Fricke / Axel Hage / Christine Herzog / Frank G Echtermeyer / Jeanne de la Roche / Adrian Koh / ...著者: Ferdinand M Haug / Ruth A Pumroy / Akshay Sridhar / Sebastian Pantke / Florian Dimek / Tabea C Fricke / Axel Hage / Christine Herzog / Frank G Echtermeyer / Jeanne de la Roche / Adrian Koh / Abhay Kotecha / Rebecca J Howard / Erik Lindahl / Vera Moiseenkova-Bell / Andreas Leffler / ![]() ![]() ![]() ![]() 要旨: Transient receptor potential (TRP) ion channels are involved in the surveillance or regulation of the acid-base balance. Here, we demonstrate that weak carbonic acids, including acetic acid, lactic ...Transient receptor potential (TRP) ion channels are involved in the surveillance or regulation of the acid-base balance. Here, we demonstrate that weak carbonic acids, including acetic acid, lactic acid, and CO activate and sensitize TRPV2 through a mechanism requiring permeation through the cell membrane. TRPV2 channels in cell-free inside-out patches maintain weak acid-sensitivity, but protons applied on either side of the membrane do not induce channel activation or sensitization. The involvement of proton modulation sites for weak acid-sensitivity was supported by the identification of titratable extracellular (Glu495, Glu561) and intracellular (His521) residues on a cryo-EM structure of rat TRPV2 (rTRPV2) treated with acetic acid. Molecular dynamics simulations as well as patch clamp experiments on mutant rTRPV2 constructs confirmed that these residues are critical for weak acid-sensitivity. We also demonstrate that the pore residue Glu609 dictates an inhibition of weak acid-induced currents by extracellular calcium. Finally, TRPV2-expression in HEK293 cells is associated with an increased weak acid-induced cytotoxicity. Together, our data provide new insights into weak acids as endogenous modulators of TRPV2. | |||||||||
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-EMDBアーカイブ
マップデータ | ![]() | 257.3 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 18.6 KB 18.6 KB | 表示 表示 | ![]() |
画像 | ![]() | 139.5 KB | ||
Filedesc metadata | ![]() | 6.6 KB | ||
その他 | ![]() ![]() | 212.6 MB 212.6 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 16.9 KB | 表示 | |
CIF形式データ | ![]() | 19.9 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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||
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ボクセルのサイズ | X=Y=Z: 0.73 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
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試料の構成要素
-全体 : Tetramer of apo wild type rat TRPV2
全体 | 名称: Tetramer of apo wild type rat TRPV2 |
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要素 |
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-超分子 #1: Tetramer of apo wild type rat TRPV2
超分子 | 名称: Tetramer of apo wild type rat TRPV2 / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 350.4 KDa |
-分子 #1: Transient receptor potential cation channel subfamily V member 2
分子 | 名称: Transient receptor potential cation channel subfamily V member 2 タイプ: protein_or_peptide / ID: 1 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 86.798891 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MTSASSPPAF RLETSDGDEE GNAEVNKGKQ EPPPMESPFQ REDRNSSPQI KVNLNFIKRP PKNTSAPSQQ EPDRFDRDRL FSVVSRGVP EELTGLLEYL RWNSKYLTDS AYTEGSTGKT CLMKAVLNLQ DGVNACIMPL LQIDKDSGNP KLLVNAQCTD E FYQGHSAL ...文字列: MTSASSPPAF RLETSDGDEE GNAEVNKGKQ EPPPMESPFQ REDRNSSPQI KVNLNFIKRP PKNTSAPSQQ EPDRFDRDRL FSVVSRGVP EELTGLLEYL RWNSKYLTDS AYTEGSTGKT CLMKAVLNLQ DGVNACIMPL LQIDKDSGNP KLLVNAQCTD E FYQGHSAL HIAIEKRSLQ CVKLLVENGA DVHLRACGRF FQKHQGTCFY FGELPLSLAA CTKQWDVVTY LLENPHQPAS LE ATDSLGN TVLHALVMIA DNSPENSALV IHMYDGLLQM GARLCPTVQL EEISNHQGLT PLKLAAKEGK IEIFRHILQR EFS GPYQPL SRKFTEWCYG PVRVSLYDLS SVDSWEKNSV LEIIAFHCKS PNRHRMVVLE PLNKLLQEKW DRLVSRFFFN FACY LVYMF IFTVVAYHQP SLDQPAIPSS KATFGESMLL LGHILILLGG IYLLLGQLWY FWRRRLFIWI SFMDSYFEIL FLLQA LLTV LSQVLRFMET EWYLPLLVLS LVLGWLNLLY YTRGFQHTGI YSVMIQKVIL RDLLRFLLVY LVFLFGFAVA LVSLSR EAR SPKAPEDNNS TVTEQPTVGQ EEEPAPYRSI LDASLELFKF TIGMGELAFQ EQLRFRGVVL LLLLAYVLLT YVLLLNM LI ALMSETVNHV ADNSWSIWKL QKAISVLEME NGYWWCRRKK HREGRLLKVG TRGDGTPDER WCFRVEEVNW AAWEKTLP T LSEDPSGPGI TGNKKNPTSK PGKNSASEED HLPLQVLQSP UniProtKB: Transient receptor potential cation channel subfamily V member 2 |
-分子 #2: 1,2-DIDECANOYL-SN-GLYCERO-3-PHOSPHOETHANOLAMINE
分子 | 名称: 1,2-DIDECANOYL-SN-GLYCERO-3-PHOSPHOETHANOLAMINE / タイプ: ligand / ID: 2 / コピー数: 4 / 式: PEX |
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分子量 | 理論値: 522.632 Da |
Chemical component information | ![]() ChemComp-PEX: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 8 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 平均露光時間: 3.54 sec. / 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 14.0 µm / 最小 デフォーカス(公称値): 6.0 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |