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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: 8avy | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| タイトル | The ABCB1 L335C mutant (mABCB1) in the Apo state | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
要素 | ATP-dependent translocase ABCB1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
キーワード | MEMBRANE PROTEIN / ABC transporter | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報Atorvastatin ADME / aldosterone secretion / Prednisone ADME / neural tissue regeneration / cellular response to nonylphenol / cellular response to borneol / response to codeine / cellular response to mycotoxin / daunorubicin transport / positive regulation of response to drug ...Atorvastatin ADME / aldosterone secretion / Prednisone ADME / neural tissue regeneration / cellular response to nonylphenol / cellular response to borneol / response to codeine / cellular response to mycotoxin / daunorubicin transport / positive regulation of response to drug / terpenoid transport / ceramide floppase activity / regulation of intestinal absorption / cellular response to external biotic stimulus / response to cyclosporin A / response to antineoplastic agent / positive regulation of establishment of Sertoli cell barrier / negative regulation of sensory perception of pain / carboxylic acid transmembrane transport / floppase activity / ceramide translocation / ABC-family protein mediated transport / response to quercetin / carboxylic acid transmembrane transporter activity / establishment of blood-retinal barrier / protein localization to bicellular tight junction / phosphatidylethanolamine flippase activity / phosphatidylcholine floppase activity / response to thyroxine / xenobiotic transport across blood-brain barrier / establishment of blood-brain barrier / intercellular canaliculus / export across plasma membrane / P-type phospholipid transporter / cardiac muscle cell differentiation / xenobiotic detoxification by transmembrane export across the plasma membrane / transepithelial transport / cellular response to L-glutamate / ABC-type xenobiotic transporter / response to vitamin A / adult heart development / response to vitamin D / response to glucagon / intestinal absorption / response to glycoside / response to alcohol / ABC-type xenobiotic transporter activity / phospholipid translocation / cellular hyperosmotic salinity response / cellular response to alkaloid / female gonad development / maintenance of blood-brain barrier / cellular response to antibiotic / exploration behavior / ATPase-coupled transmembrane transporter activity / efflux transmembrane transporter activity / xenobiotic transmembrane transporter activity / cellular response to dexamethasone stimulus / response to cadmium ion / transmembrane transporter activity / xenobiotic transport / lactation / response to progesterone / proteasomal protein catabolic process / neurogenesis / regulation of chloride transport / placenta development / stem cell proliferation / cellular response to estradiol stimulus / brush border membrane / female pregnancy / circadian rhythm / G2/M transition of mitotic cell cycle / response to toxic substance / cellular response to tumor necrosis factor / epidermal growth factor receptor signaling pathway / heart development / cellular response to lipopolysaccharide / gene expression / response to hypoxia / apical plasma membrane / response to xenobiotic stimulus / ubiquitin protein ligase binding / cell surface / ATP hydrolysis activity / ATP binding / membrane / plasma membrane / cytoplasm 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: 2.9 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
データ登録者 | Parey, K. / Januliene, D. / Gewering, T. / Moeller, A. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 資金援助 | ドイツ, 2件
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引用 | ジャーナル: Elife / 年: 2024タイトル: Tracing the substrate translocation mechanism in P-glycoprotein. 著者: Theresa Gewering / Deepali Waghray / Kristian Parey / Hendrik Jung / Nghi N B Tran / Joel Zapata / Pengyi Zhao / Hao Chen / Dovile Januliene / Gerhard Hummer / Ina Urbatsch / Arne Moeller / Qinghai Zhang / ![]() 要旨: P-glycoprotein (Pgp) is a prototypical ATP-binding cassette (ABC) transporter of great biological and clinical significance.Pgp confers cancer multidrug resistance and mediates the bioavailability ...P-glycoprotein (Pgp) is a prototypical ATP-binding cassette (ABC) transporter of great biological and clinical significance.Pgp confers cancer multidrug resistance and mediates the bioavailability and pharmacokinetics of many drugs (Juliano and Ling, 1976; Ueda et al., 1986; Sharom, 2011). Decades of structural and biochemical studies have provided insights into how Pgp binds diverse compounds (Loo and Clarke, 2000; Loo et al., 2009; Aller et al., 2009; Alam et al., 2019; Nosol et al., 2020; Chufan et al., 2015), but how they are translocated through the membrane has remained elusive. Here, we covalently attached a cyclic substrate to discrete sites of Pgp and determined multiple complex structures in inward- and outward-facing states by cryoEM. In conjunction with molecular dynamics simulations, our structures trace the substrate passage across the membrane and identify conformational changes in transmembrane helix 1 (TM1) as regulators of substrate transport. In mid-transport conformations, TM1 breaks at glycine 72. Mutation of this residue significantly impairs drug transport of Pgp in vivo, corroborating the importance of its regulatory role. Importantly, our data suggest that the cyclic substrate can exit Pgp without the requirement of a wide-open outward-facing conformation, diverting from the common efflux model for Pgp and other ABC exporters. The substrate transport mechanism of Pgp revealed here pinpoints critical targets for future drug discovery studies of this medically relevant system. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 8avy.cif.gz | 224.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8avy.ent.gz | 174.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8avy.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/av/8avy ftp://data.pdbj.org/pub/pdb/validation_reports/av/8avy | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 15687MC ![]() 7zk4C ![]() 7zk5C ![]() 7zk6C ![]() 7zk8C ![]() 7zk9C ![]() 7zkaC ![]() 7zkbC ![]() 8peeC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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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: 146063.859 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Komagataella pastoris (菌類)参照: UniProt: P21447, ABC-type xenobiotic transporter, P-type phospholipid transporter | ||||||||||
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| #2: 化合物 | | #3: 化合物 | #4: 化合物 | ChemComp-Y01 / #5: 水 | ChemComp-HOH / | 研究の焦点であるリガンドがあるか | N | Has protein modification | N | |
-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: ABCB1 / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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| 分子量 | 値: 140 kDa/nm / 実験値: NO |
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Komagataella pastoris (菌類) |
| 緩衝液 | pH: 7.5 |
| 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 |
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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: 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 / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1200 nm |
| 撮影 | 電子線照射量: 75 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
| ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 精密化 | ||||||||||||||||||||||||
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| EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 790159 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 |
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万見について






ドイツ, 2件
引用


















PDBj




Komagataella pastoris (菌類)




FIELD EMISSION GUN