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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: 7a69 | ||||||||||||||||||||||||||||||||||||
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| タイトル | Nanodisc reconstituted human ABCB1 in complex with MRK16 Fab and vincristine | ||||||||||||||||||||||||||||||||||||
要素 |
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キーワード | TRANSPORT PROTEIN / P-glycoprotein / MDR1 / nanodisc | ||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報hormone transport / phosphatidylethanolamine floppase activity / 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 ...hormone transport / phosphatidylethanolamine floppase activity / 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 / Abacavir transmembrane 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 / external side of apical plasma membrane / Atorvastatin ADME / response to thyroxine / xenobiotic transport across blood-brain barrier / establishment of blood-brain barrier / export across plasma membrane / P-type phospholipid transporter / xenobiotic detoxification by transmembrane export across the plasma membrane / transepithelial transport / cellular response to L-glutamate / ABC-type xenobiotic transporter / response to vitamin A / response to glucagon / response to vitamin D / response to glycoside / intestinal absorption / response to alcohol / Prednisone ADME / ABC-type xenobiotic transporter activity / phospholipid translocation / cellular hyperosmotic salinity response / cellular response to alkaloid / maintenance of blood-brain barrier / cellular response to antibiotic / 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 / transport across blood-brain barrier / lactation / response to progesterone / xenobiotic metabolic process / regulation of chloride transport / placenta development / stem cell proliferation / cellular response to estradiol stimulus / brush border membrane / female pregnancy / circadian rhythm / ABC-family protein mediated transport / transmembrane transport / G2/M transition of mitotic cell cycle / cellular response to tumor necrosis factor / cellular response to lipopolysaccharide / response to hypoxia / apical plasma membrane / response to xenobiotic stimulus / ubiquitin protein ligase binding / cell surface / ATP hydrolysis activity / extracellular exosome / ATP binding / membrane / plasma membrane / cytoplasm 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: 3.2 Å | ||||||||||||||||||||||||||||||||||||
データ登録者 | Nosol, K. / Locher, K.P. | ||||||||||||||||||||||||||||||||||||
| 資金援助 | スイス, 1件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2020タイトル: Cryo-EM structures reveal distinct mechanisms of inhibition of the human multidrug transporter ABCB1. 著者: Kamil Nosol / Ksenija Romane / Rossitza N Irobalieva / Amer Alam / Julia Kowal / Naoya Fujita / Kaspar P Locher / ![]() 要旨: ABCB1 detoxifies cells by exporting diverse xenobiotic compounds, thereby limiting drug disposition and contributing to multidrug resistance in cancer cells. Multiple small-molecule inhibitors and ...ABCB1 detoxifies cells by exporting diverse xenobiotic compounds, thereby limiting drug disposition and contributing to multidrug resistance in cancer cells. Multiple small-molecule inhibitors and inhibitory antibodies have been developed for therapeutic applications, but the structural basis of their activity is insufficiently understood. We determined cryo-EM structures of nanodisc-reconstituted, human ABCB1 in complex with the Fab fragment of the inhibitory, monoclonal antibody MRK16 and bound to a substrate (the antitumor drug vincristine) or to the potent inhibitors elacridar, tariquidar, or zosuquidar. We found that inhibitors bound in pairs, with one molecule lodged in the central drug-binding pocket and a second extending into a phenylalanine-rich cavity that we termed the "access tunnel." This finding explains how inhibitors can act as substrates at low concentration, but interfere with the early steps of the peristaltic extrusion mechanism at higher concentration. Our structural data will also help the development of more potent and selective ABCB1 inhibitors. | ||||||||||||||||||||||||||||||||||||
| 履歴 |
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構造の表示
| ムービー |
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| 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 | 7a69.cif.gz | 293.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7a69.ent.gz | 232 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7a69.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/a6/7a69 ftp://data.pdbj.org/pub/pdb/validation_reports/a6/7a69 | HTTPS FTP |
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-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: 141628.781 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ABCB1, MDR1, PGY1 / 発現宿主: Homo sapiens (ヒト)参照: UniProt: P08183, ABC-type xenobiotic transporter, P-type phospholipid transporter | ||||
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| #2: 抗体 | 分子量: 24139.758 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) | ||||
| #3: 抗体 | 分子量: 23415.236 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) | ||||
| #4: 化合物 | ChemComp-R1Q / | ||||
| #5: 化合物 | ChemComp-CLR / 研究の焦点であるリガンドがあるか | Y | Has protein modification | Y | |
-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: Nanodisc reconstituted human ABCB1 in complex with MRK16 Fab and vincristine タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT |
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| 分子量 | 値: 0.24 MDa / 実験値: YES |
| 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 | 濃度: 0.4 mg/ml / 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 / Cs: 2.7 mm / C2レンズ絞り径: 100 µm |
| 試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 電子線照射量: 32 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: 1.17.1_3660: / 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: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 160170 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 |
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コントローラー
万見について




Homo sapiens (ヒト)

スイス, 1件
引用

UCSF Chimera
















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