+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8q7b | ||||||
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タイトル | ABCG2 in complex with MZ29 and 5D3 Fab | ||||||
要素 |
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キーワード | TRANSPORT PROTEIN / ABC transporter / multidrug resistance | ||||||
機能・相同性 | 機能・相同性情報 biotin transmembrane transporter activity / biotin transport / riboflavin transport / riboflavin transmembrane transporter activity / sphingolipid transporter activity / renal urate salt excretion / Abacavir transmembrane transport / urate metabolic process / urate transmembrane transporter activity / external side of apical plasma membrane ...biotin transmembrane transporter activity / biotin transport / riboflavin transport / riboflavin transmembrane transporter activity / sphingolipid transporter activity / renal urate salt excretion / Abacavir transmembrane transport / urate metabolic process / urate transmembrane transporter activity / external side of apical plasma membrane / sphingolipid biosynthetic process / organic anion transport / Sphingolipid de novo biosynthesis / organic anion transmembrane transporter activity / xenobiotic transport across blood-brain barrier / transepithelial transport / export across plasma membrane / ABC-type xenobiotic transporter / Paracetamol ADME / Ciprofloxacin ADME / NFE2L2 regulating MDR associated enzymes / ABC-type xenobiotic transporter activity / Differentiation of keratinocytes in interfollicular epidermis in mammalian skin / cellular detoxification / Heme biosynthesis / Heme degradation / efflux transmembrane transporter activity / xenobiotic transmembrane transporter activity / ATPase-coupled transmembrane transporter activity / transport across blood-brain barrier / mitochondrial membrane / brush border membrane / Iron uptake and transport / transmembrane transport / membrane raft / apical plasma membrane / protein homodimerization activity / ATP hydrolysis activity / nucleoplasm / ATP binding / identical protein binding / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Mus musculus (ハツカネズミ) 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: 2.56 Å | ||||||
データ登録者 | Kowal, J. / Yu, Q. / Ni, D. / Stahlberg, H. / Tajkhorshid, E. / Altmann, K.H. / Locher, K.P. / Manolaridis, I. / Jackson, S.M. / Taylor, N.M.I. / Zechner, M. | ||||||
資金援助 | スイス, 1件
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引用 | ジャーナル: ACS Chem Biol / 年: 2024 タイトル: Modulation of ABCG2 Transporter Activity by Ko143 Derivatives. 著者: Qin Yu / Sepehr Dehghani-Ghahnaviyeh / Ali Rasouli / Anna Sadurni / Julia Kowal / Rose Bang-Soerensen / Po-Chao Wen / Melanie Tinzl-Zechner / Rossitza N Irobalieva / Dongchun Ni / Henning ...著者: Qin Yu / Sepehr Dehghani-Ghahnaviyeh / Ali Rasouli / Anna Sadurni / Julia Kowal / Rose Bang-Soerensen / Po-Chao Wen / Melanie Tinzl-Zechner / Rossitza N Irobalieva / Dongchun Ni / Henning Stahlberg / Karl-Heinz Altmann / Emad Tajkhorshid / Kaspar P Locher / 要旨: ABCG2 is a multidrug transporter that protects tissues from xenobiotics, affects drug pharmacokinetics, and contributes to multidrug resistance of cancer cells. Here, we present tetracyclic ...ABCG2 is a multidrug transporter that protects tissues from xenobiotics, affects drug pharmacokinetics, and contributes to multidrug resistance of cancer cells. Here, we present tetracyclic fumitremorgin C analog Ko143 derivatives, evaluate their modulation of purified ABCG2, and report four high-resolution cryo-EM structures and computational analyses to elucidate their interactions with ABCG2. We found that Ko143 derivatives that are based on a ring-opened scaffold no longer inhibit ABCG2-mediated transport activity. In contrast, closed-ring, tetracyclic analogs were highly potent inhibitors. Strikingly, the least potent of these compounds, MZ82, bound deeper into the central ABCG2 cavity than the other inhibitors and it led to partial closure of the transmembrane domains and increased flexibility of the nucleotide-binding domains. Minor structural modifications can thus convert a potent inhibitor into a compound that induces conformational changes in ABCG2 similar to those observed during binding of a substrate. Molecular dynamics simulations and free energy binding calculations further supported the correlation between reduced potency and distinct binding pose of the compounds. We introduce the highly potent inhibitor AZ99 that may exhibit improved stability. #1: ジャーナル: Nat Struct Mol Biol / 年: 2018 タイトル: Structural basis of small-molecule inhibition of human multidrug transporter ABCG2. 著者: Scott M Jackson / Ioannis Manolaridis / Julia Kowal / Melanie Zechner / Nicholas M I Taylor / Manuel Bause / Stefanie Bauer / Ruben Bartholomaeus / Guenther Bernhardt / Burkhard Koenig / ...著者: Scott M Jackson / Ioannis Manolaridis / Julia Kowal / Melanie Zechner / Nicholas M I Taylor / Manuel Bause / Stefanie Bauer / Ruben Bartholomaeus / Guenther Bernhardt / Burkhard Koenig / Armin Buschauer / Henning Stahlberg / Karl-Heinz Altmann / Kaspar P Locher / 要旨: ABCG2 is an ATP-binding cassette (ABC) transporter that protects tissues against xenobiotics, affects the pharmacokinetics of drugs and contributes to multidrug resistance. Although many inhibitors ...ABCG2 is an ATP-binding cassette (ABC) transporter that protects tissues against xenobiotics, affects the pharmacokinetics of drugs and contributes to multidrug resistance. Although many inhibitors and modulators of ABCG2 have been developed, understanding their structure-activity relationship requires high-resolution structural insight. Here, we present cryo-EM structures of human ABCG2 bound to synthetic derivatives of the fumitremorgin C-related inhibitor Ko143 or the multidrug resistance modulator tariquidar. Both compounds are bound to the central, inward-facing cavity of ABCG2, blocking access for substrates and preventing conformational changes required for ATP hydrolysis. The high resolutions allowed for de novo building of the entire transporter and also revealed tightly bound phospholipids and cholesterol interacting with the lipid-exposed surface of the transmembrane domains (TMDs). Extensive chemical modifications of the Ko143 scaffold combined with in vitro functional analyses revealed the details of ABCG2 interactions with this compound family and provide a basis for the design of novel inhibitors and modulators. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8q7b.cif.gz | 299.3 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8q7b.ent.gz | 237.4 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8q7b.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
文書・要旨 | 8q7b_validation.pdf.gz | 1.9 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8q7b_full_validation.pdf.gz | 1.9 MB | 表示 | |
XML形式データ | 8q7b_validation.xml.gz | 65.8 KB | 表示 | |
CIF形式データ | 8q7b_validation.cif.gz | 95.5 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/q7/8q7b ftp://data.pdbj.org/pub/pdb/validation_reports/q7/8q7b | HTTPS FTP |
-関連構造データ
関連構造データ | 18210MC 8pxoC 8py4C 8qcmC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
実験データセット #1 | データ参照: 10.6019/EMPIAR-10374 / データの種類: EMPIAR |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-抗体 , 2種, 4分子 DFEC
#1: 抗体 | 分子量: 23843.633 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Mus musculus (ハツカネズミ) / 発現宿主: Escherichia coli (大腸菌) #2: 抗体 | 分子量: 23594.016 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Mus musculus (ハツカネズミ) / 発現宿主: Escherichia coli (大腸菌) |
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-タンパク質 / 糖 , 2種, 4分子 BA
#3: タンパク質 | 分子量: 72385.852 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ABCG2, ABCP, BCRP, BCRP1, MXR / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q9UNQ0, ABC-type xenobiotic transporter #4: 多糖 | |
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-非ポリマー , 3種, 60分子
#5: 化合物 | ChemComp-CLR / #6: 化合物 | #7: 水 | ChemComp-HOH / | |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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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 |
-試料調製
構成要素 | 名称: ABCG2 in complex with MZ29 and 5D3 Fab / タイプ: COMPLEX 詳細: Nanodisc-reconstituted 5D3-Fab-ABCG2 was incubated with MZ29 Entity ID: #1-#3 / 由来: RECOMBINANT |
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分子量 | 値: 0.244 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) / 細胞: HEK293EBNA |
緩衝液 | pH: 7.5 |
緩衝液成分 | 濃度: 0.04 M / 名称: Hepes |
試料 | 濃度: 0.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: The sample was mono-disperse. |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 400 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE-PROPANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
-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 / 倍率(公称値): 130000 X / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 800 nm / Cs: 2.7 mm / C2レンズ絞り径: 100 µm / アライメント法: COMA FREE |
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: 99 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||
対称性 | 点対称性: C2 (2回回転対称) | ||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.56 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 205986 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 50 | ||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 6ETI Accession code: 6ETI / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||||||||||
拘束条件 |
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