登録情報 データベース : EMDB / ID : EMD-11667 構造の表示 ダウンロードとリンクタイトル Nanodisc reconstituted human ABCB1 in complex with MRK16 Fab and vincristine マップデータvincristine-bound ABCB1-MRK16-Fab 詳細 試料複合体 : Nanodisc reconstituted human ABCB1 in complex with MRK16 Fab and vincristineタンパク質・ペプチド : Multidrug resistance protein 1タンパク質・ペプチド : MRK16 Fab-fragment light chainタンパク質・ペプチド : MRK16 Fab-fragment heavy chainリガンド : vincristineリガンド : CHOLESTEROL 詳細 キーワード P-glycoprotein / MDR1 / nanodisc / TRANSPORT PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
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 / ABC-type xenobiotic transporter / cellular response to L-glutamate / 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 / transmembrane transport / ABC-family protein mediated 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 Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. ... Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性生物種 Homo sapiens (ヒト) / Mus musculus (ハツカネズミ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.2 Å 詳細 データ登録者Nosol K / Locher KP 資金援助 スイス, 1件 詳細 詳細を隠すOrganization Grant number 国 Swiss National Science Foundation 310030_189111 スイス
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 登録 2020年8月25日 - ヘッダ(付随情報) 公開 2020年10月21日 - マップ公開 2020年10月21日 - 更新 2025年7月2日 - 現状 2025年7月2日 処理サイト : PDBe / 状態 : 公開
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