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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: 8qot | ||||||||||||
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タイトル | Structure of the mu opioid receptor bound to the antagonist nanobody NbE | ||||||||||||
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![]() | MEMBRANE PROTEIN / opioid receptor / nanobody / antagonist / NabFab / MOR | ||||||||||||
機能・相同性 | ![]() Opioid Signalling / Peptide ligand-binding receptors / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / negative regulation of cAMP-mediated signaling / G-protein activation / G protein-coupled opioid receptor activity / G protein-coupled opioid receptor signaling pathway / G alpha (i) signalling events ...Opioid Signalling / Peptide ligand-binding receptors / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / negative regulation of cAMP-mediated signaling / G-protein activation / G protein-coupled opioid receptor activity / G protein-coupled opioid receptor signaling pathway / G alpha (i) signalling events / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / negative regulation of nitric oxide biosynthetic process / regulation of NMDA receptor activity / positive regulation of neurogenesis / negative regulation of cytosolic calcium ion concentration / transmission of nerve impulse / G-protein alpha-subunit binding / sensory perception of pain / presynaptic modulation of chemical synaptic transmission / locomotory behavior / G protein-coupled receptor activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / GABA-ergic synapse / adenylate cyclase-activating dopamine receptor signaling pathway / presynapse / phospholipase C-activating G protein-coupled receptor signaling pathway / perikaryon / positive regulation of ERK1 and ERK2 cascade / endosome / axon / dendrite / membrane / plasma membrane 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() ![]() ![]() ![]() synthetic construct (人工物) | ||||||||||||
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 | ||||||||||||
![]() | Yu, J. / Kumar, A. / Zhang, X. / Martin, C. / Raia, P. / Manglik, A. / Ballet, S. / Boland, A. / Stoeber, M. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of μ-opioid receptor targeting by a nanobody antagonist. 著者: Jun Yu / Amit Kumar / Xuefeng Zhang / Charlotte Martin / Kevin Van Holsbeeck / Pierre Raia / Antoine Koehl / Toon Laeremans / Jan Steyaert / Aashish Manglik / Steven Ballet / Andreas Boland / Miriam Stoeber / ![]() ![]() ![]() 要旨: The μ-opioid receptor (μOR), a prototypical G protein-coupled receptor (GPCR), is the target of opioid analgesics such as morphine and fentanyl. Due to the severe side effects of current opioid ...The μ-opioid receptor (μOR), a prototypical G protein-coupled receptor (GPCR), is the target of opioid analgesics such as morphine and fentanyl. Due to the severe side effects of current opioid drugs, there is considerable interest in developing novel modulators of μOR function. Most GPCR ligands today are small molecules, however biologics, including antibodies and nanobodies, represent alternative therapeutics with clear advantages such as affinity and target selectivity. Here, we describe the nanobody NbE, which selectively binds to the μOR and acts as an antagonist. We functionally characterize NbE as an extracellular and genetically encoded μOR ligand and uncover the molecular basis for μOR antagonism by determining the cryo-EM structure of the NbE-μOR complex. NbE displays a unique ligand binding mode and achieves μOR selectivity by interactions with the orthosteric pocket and extracellular receptor loops. Based on a β-hairpin loop formed by NbE that deeply protrudes into the μOR, we design linear and cyclic peptide analogs that recapitulate NbE's antagonism. The work illustrates the potential of nanobodies to uniquely engage with GPCRs and describes lower molecular weight μOR ligands that can serve as a basis for therapeutic developments. #1: ジャーナル: bioRxiv / 年: 2023 タイトル: Structural Basis of μ-Opioid Receptor-Targeting by a Nanobody Antagonist. 著者: Jun Yu / Amit Kumar / Xuefeng Zhang / Charlotte Martin / Pierre Raia / Antoine Koehl / Toon Laeremans / Jan Steyaert / Aashish Manglik / Steven Ballet / Andreas Boland / Miriam Stoeber / ![]() ![]() ![]() 要旨: The μ-opioid receptor (μOR), a prototypical member of the G protein-coupled receptor (GPCR) family, is the molecular target of opioid analgesics such as morphine and fentanyl. Due to the ...The μ-opioid receptor (μOR), a prototypical member of the G protein-coupled receptor (GPCR) family, is the molecular target of opioid analgesics such as morphine and fentanyl. Due to the limitations and severe side effects of currently available opioid drugs, there is considerable interest in developing novel modulators of μOR function. Most GPCR ligands today are small molecules, however biologics, including antibodies and nanobodies, are emerging as alternative therapeutics with clear advantages such as affinity and target selectivity. Here, we describe the nanobody NbE, which selectively binds to the μOR and acts as an antagonist. We functionally characterize NbE as an extracellular and genetically encoded μOR ligand and uncover the molecular basis for μOR antagonism by solving the cryo-EM structure of the NbE-μOR complex. NbE displays a unique ligand binding mode and achieves μOR selectivity by interactions with the orthosteric pocket and extracellular receptor loops. Based on a β-hairpin loop formed by NbE that deeply inserts into the μOR and centers most binding contacts, we design short peptide analogues that retain μOR antagonism. The work illustrates the potential of nanobodies to uniquely engage with GPCRs and describes novel μOR ligands that can serve as a basis for therapeutic developments. | ||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 190 KB | 表示 | ![]() |
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PDB形式 | ![]() | 141 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1 MB | 表示 | |
XML形式データ | ![]() | 38.4 KB | 表示 | |
CIF形式データ | ![]() | 55.5 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 18541MC ![]() 8v8kC 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 ![]() |
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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: 53994.215 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: MOR-2xSTREP-8xHIS / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() 参照: UniProt: P42866 |
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#2: 抗体 | 分子量: 18458.662 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: synthesized nanobody NbE-6xHis / 由来: (組換発現) ![]() ![]() ![]() ![]() |
#3: 抗体 | 分子量: 28220.525 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: Signal sequence-NabFab HC / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() |
#4: 抗体 | 分子量: 25794.859 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() |
#5: 抗体 | 分子量: 17414.383 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: Signal sequence-6xHis Anti-Fab nanobody / 由来: (組換発現) ![]() ![]() ![]() ![]() |
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: MOR-NbE-NabFab-AntiFab complex / タイプ: COMPLEX 詳細: Mu-opioid receptor bound to a nanobody antagonist (NbE), and NabFab module used as fiducial marker. Entity ID: all / 由来: MULTIPLE SOURCES | |||||||||||||||||||||||||
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分子量 | 値: 0.12 MDa | |||||||||||||||||||||||||
由来(天然) | 生物種: ![]() ![]() | |||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | |||||||||||||||||||||||||
緩衝液 | pH: 7.5 | |||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 2.8 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: MOR receptor was expressed and purified in insect cells in isolation. NbE was expressed and purified in E. coli. NabFab module was expressed and purified in E. coli. All purified components ...詳細: MOR receptor was expressed and purified in insect cells in isolation. NbE was expressed and purified in E. coli. NabFab module was expressed and purified in E. coli. All purified components were incubated and formed readily a stable complex. Final complex was purified over size exclusion chromatography. | |||||||||||||||||||||||||
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: LEICA EM GP / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 288 K |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS ARCTICA |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 150000 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): 600 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 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 最高温度: 95 K / 最低温度: 90 K |
撮影 | 平均露光時間: 52 sec. / 電子線照射量: 40 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 撮影したグリッド数: 4 / 実像数: 5938 |
画像スキャン | 横: 4096 / 縦: 4096 |
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解析
EMソフトウェア |
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 6063911 | ||||||||||||||||||||||||||||||||||||||||
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: 445766 / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 68 / プロトコル: AB INITIO MODEL / 空間: REAL | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1 / Source name: PDB / タイプ: experimental model
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精密化 | 交差検証法: NONE |