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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: 9yc5 | ||||||||||||||||||||||||
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| タイトル | Human uPAR bound to the Fab fragment of targeted cancer therapeutic antibody FL1 | ||||||||||||||||||||||||
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キーワード | IMMUNE SYSTEM / Complex / Targeted cancer therapy / Monoclonal anti-uPAR antibody FL1 / Antibody-drug conjugate | ||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報urokinase plasminogen activator receptor activity / Attachment of GPI anchor to uPAR / urokinase plasminogen activator signaling pathway / positive regulation of homotypic cell-cell adhesion / regulation of plasminogen activation / regulation of fibrinolysis / protein complex involved in cell-matrix adhesion / serine-type endopeptidase complex / Dissolution of Fibrin Clot / extrinsic component of membrane ...urokinase plasminogen activator receptor activity / Attachment of GPI anchor to uPAR / urokinase plasminogen activator signaling pathway / positive regulation of homotypic cell-cell adhesion / regulation of plasminogen activation / regulation of fibrinolysis / protein complex involved in cell-matrix adhesion / serine-type endopeptidase complex / Dissolution of Fibrin Clot / extrinsic component of membrane / positive regulation of DNA binding / negative regulation of intrinsic apoptotic signaling pathway / positive regulation of release of cytochrome c from mitochondria / regulation of proteolysis / regulation of cell adhesion / specific granule membrane / positive regulation of epidermal growth factor receptor signaling pathway / cell projection / positive regulation of protein phosphorylation / chemotaxis / blood coagulation / signaling receptor activity / endoplasmic reticulum lumen / signaling receptor binding / external side of plasma membrane / protein domain specific binding / focal adhesion / Neutrophil degranulation / endoplasmic reticulum membrane / negative regulation of apoptotic process / enzyme binding / cell surface / signal transduction / extracellular region / membrane / plasma membrane 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: 2.94 Å | ||||||||||||||||||||||||
データ登録者 | Anane, R.F. / Whisstock, J.C. / Engelholm, L.H. / Law, R.H.P. / Ploug, M. | ||||||||||||||||||||||||
| 資金援助 | デンマーク, オーストラリア, 4件
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引用 | ジャーナル: Protein Sci / 年: 2026タイトル: Structural basis for uPAR binding to an antibody developed for targeted cancer therapy. Mechanistic insights into flexibility, ligand recognition, and molecular imaging. 著者: Rex F Anane / Anni Kumari / Hari Venugopal / Sylvain Trépout / James C Whisstock / Lars H Engelholm / Ruby H P Law / Michael Ploug / ![]() 要旨: The urokinase-type plasminogen activator receptor (uPAR) is currently gaining momentum as a promising molecular target for treatment of various solid cancers. For patient stratification, we developed ...The urokinase-type plasminogen activator receptor (uPAR) is currently gaining momentum as a promising molecular target for treatment of various solid cancers. For patient stratification, we developed a high-affinity uPAR-targeting peptide (AE105) detecting primary cancer lesions as well as occult metastasis by positron emission tomography (PET) imaging. uPAR-targeting by AE105 is also used for optical imaging in fluorescence-guided surgery of, for example, head-and-neck cancers. Recently, we showed that a monoclonal anti-uPAR antibody (FL1), in the form of an antibody-drug conjugate (FL1-ADC), efficiently eradicate pancreatic ductal carcinomas in surrogate mouse models leading to long-term remissions. In the current study, we solved high-resolution cryo-EM structures of FL1 in complex with two different conformational states of uPAR. Combined with comprehensive kinetic data from surface plasmon resonance studies, our cryo-EM structures provide essential insights into how FL1 binding impacts the interdomain flexibility of uPAR by restricting the movement of its N-terminal LU domain. This constraint from the bound FL1 drives uPAR into its open conformation, which leads to a pronounced reduction in the binding affinity for both its natural protease ligand (300-fold) and the PET imaging probe AE105 (25-fold). Collectively, these consequences of FL1-binding on uPAR conformation are considered beneficial for both targeted cancer treatment with FL1-ADCs and for the accompanying evaluation of treatment efficacy by longitudinal AE105-based PET imaging. | ||||||||||||||||||||||||
| 履歴 |
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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 | 9yc5.cif.gz | 232 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9yc5.ent.gz | 186.4 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9yc5.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/yc/9yc5 ftp://data.pdbj.org/pub/pdb/validation_reports/yc/9yc5 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 72760MC ![]() 9yc6C 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 ( |
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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: 31501.342 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: PLAUR, MO3, UPAR / 細胞株 (発現宿主): S2発現宿主: ![]() 参照: UniProt: Q03405 | ||||
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| #2: 抗体 | 分子量: 23581.258 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() | ||||
| #3: 抗体 | 分子量: 24168.818 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() | ||||
| #4: 多糖 | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | ||||
| #5: 糖 | | 研究の焦点であるリガンドがあるか | N | 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: Binary complex of human uPAR and Fab fragment of anti-uPAR antibody FL1 タイプ: COMPLEX 詳細: Full-length human uPAR, and full-length antibody FL1 (IgG) were mixed to form the protein complex which was used for EM sample. Entity ID: #1-#3 / 由来: MULTIPLE SOURCES | |||||||||||||||||||||||||
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| 由来(天然) | 生物種: Homo sapiens (ヒト) | |||||||||||||||||||||||||
| 由来(組換発現) | 生物種: ![]() | |||||||||||||||||||||||||
| 緩衝液 | pH: 7.4 詳細: 20mM Tris, 150mM NaCl, 2.5% Glycerol, 1mM EDTA, pH 7.4 | |||||||||||||||||||||||||
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| 試料 | 濃度: 3.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Full-length human uPAR, and full-length antibody FL1 (IgG) were mixed in 2:1 molar ratio to form the protein complex which was used for EM sample. | |||||||||||||||||||||||||
| 試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 | |||||||||||||||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K |
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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: TFS 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): 105000 X / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 500 nm / Cs: 2.7 mm |
| 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 | 平均露光時間: 4.92 sec. / 電子線照射量: 10.7 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 7181 / 詳細: Images were collected at a pixel size of 0.8234 |
| 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: 10 eV / 位相板: VOLTA PHASE PLATE |
| 画像スキャン | 横: 5760 / 縦: 4092 |
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解析
| EMソフトウェア |
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| 画像処理 | 詳細: Following motion correction, 4345 images were selected for particle picking | ||||||||||||||||||||||||||||||||||||||||||||||||||
| CTF補正 | 詳細: CTF corrections were performed after 3D reconstruction to improve the final resolution タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 7426690 詳細: The 7426690 particles were picked by automated particle picking using blob picker. Several rounds of 2D classification were performed to discard particles of low quality, producing 184642 ...詳細: The 7426690 particles were picked by automated particle picking using blob picker. Several rounds of 2D classification were performed to discard particles of low quality, producing 184642 particles of good quality which were used for 3D reconstruction. | ||||||||||||||||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.94 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 184642 / クラス平均像の数: 16 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | B value: 112 / プロトコル: FLEXIBLE FIT / 空間: REAL / Target criteria: cross-correlation coefficient 詳細: An initial local fitting was performed with ISOLDE implemented in ChimeraX prior to real-space refinement in phenix. | ||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | Accession code: AF-Q03405-F1-v4 / Chain residue range: 114-299 / Source name: AlphaFold / タイプ: in silico model | ||||||||||||||||||||||||||||||||||||||||||||||||||
| 拘束条件 |
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ムービー
コントローラー
万見について




Homo sapiens (ヒト)

デンマーク,
オーストラリア, 4件
引用


PDBj






FIELD EMISSION GUN