+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 9bjk | ||||||
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タイトル | Inactive mu opioid receptor bound to Nb6, naloxone and NAM | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / G-protein coupled receptor / inactive / opioid / allosteric modulator | ||||||
機能・相同性 | 機能・相同性情報 Opioid Signalling / spine apparatus / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / Peptide ligand-binding receptors / adenylate cyclase-inhibiting opioid receptor signaling pathway / positive regulation of appetite / G-protein activation / G protein-coupled opioid receptor activity ...Opioid Signalling / spine apparatus / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / Peptide ligand-binding receptors / adenylate cyclase-inhibiting opioid receptor signaling pathway / positive regulation of appetite / G-protein activation / G protein-coupled opioid receptor activity / negative regulation of luteinizing hormone secretion / G protein-coupled opioid receptor signaling pathway / sperm ejaculation / G alpha (i) signalling events / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / negative regulation of nitric oxide biosynthetic process / negative regulation of cAMP-mediated signaling / negative regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / neuropeptide binding / regulation of NMDA receptor activity / positive regulation of neurogenesis / eating behavior / negative regulation of cytosolic calcium ion concentration / transmission of nerve impulse / social behavior / neuropeptide signaling pathway / G-protein alpha-subunit binding / voltage-gated calcium channel activity / GABA-ergic synapse / positive regulation of gluconeogenesis / dendrite membrane / sensory perception of pain / presynaptic modulation of chemical synaptic transmission / dendrite cytoplasm / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / excitatory postsynaptic potential / locomotory behavior / G protein-coupled receptor activity / adenylate cyclase-activating dopamine receptor signaling pathway / G-protein beta-subunit binding / presynaptic membrane / phospholipase C-activating G protein-coupled receptor signaling pathway / perikaryon / postsynaptic membrane / response to ethanol / positive regulation of ERK1 and ERK2 cascade / endosome / neuron projection / G protein-coupled receptor signaling pathway / protein domain specific binding / axon / focal adhesion / dendrite / membrane / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Lama glama (ラマ) Mus musculus (ハツカネズミ) | ||||||
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: 3.26 Å | ||||||
データ登録者 | O'Brien, E.S. / Wang, H. / Kaavya Krishna, K. / Zhang, C. / Kobilka, B.K. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Nature / 年: 2024 タイトル: A µ-opioid receptor modulator that works cooperatively with naloxone. 著者: Evan S O'Brien / Vipin Ashok Rangari / Amal El Daibani / Shainnel O Eans / Haylee R Hammond / Elizabeth White / Haoqing Wang / Yuki Shiimura / Kaavya Krishna Kumar / Qianru Jiang / Kevin ...著者: Evan S O'Brien / Vipin Ashok Rangari / Amal El Daibani / Shainnel O Eans / Haylee R Hammond / Elizabeth White / Haoqing Wang / Yuki Shiimura / Kaavya Krishna Kumar / Qianru Jiang / Kevin Appourchaux / Weijiao Huang / Chensong Zhang / Brandon J Kennedy / Jesper M Mathiesen / Tao Che / Jay P McLaughlin / Susruta Majumdar / Brian K Kobilka / 要旨: The µ-opioid receptor (µOR) is a well-established target for analgesia, yet conventional opioid receptor agonists cause serious adverse effects, notably addiction and respiratory depression. These ...The µ-opioid receptor (µOR) is a well-established target for analgesia, yet conventional opioid receptor agonists cause serious adverse effects, notably addiction and respiratory depression. These factors have contributed to the current opioid overdose epidemic driven by fentanyl, a highly potent synthetic opioid. µOR negative allosteric modulators (NAMs) may serve as useful tools in preventing opioid overdose deaths, but promising chemical scaffolds remain elusive. Here we screened a large DNA-encoded chemical library against inactive µOR, counter-screening with active, G-protein and agonist-bound receptor to 'steer' hits towards conformationally selective modulators. We discovered a NAM compound with high and selective enrichment to inactive µOR that enhances the affinity of the key opioid overdose reversal molecule, naloxone. The NAM works cooperatively with naloxone to potently block opioid agonist signalling. Using cryogenic electron microscopy, we demonstrate that the NAM accomplishes this effect by binding a site on the extracellular vestibule in direct contact with naloxone while stabilizing a distinct inactive conformation of the extracellular portions of the second and seventh transmembrane helices. The NAM alters orthosteric ligand kinetics in therapeutically desirable ways and works cooperatively with low doses of naloxone to effectively inhibit various morphine-induced and fentanyl-induced behavioural effects in vivo while minimizing withdrawal behaviours. Our results provide detailed structural insights into the mechanism of negative allosteric modulation of the µOR and demonstrate how this can be exploited in vivo. | ||||||
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 | 9bjk.cif.gz | 85 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb9bjk.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 9bjk.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 | 9bjk_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 9bjk_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 9bjk_validation.xml.gz | 26.1 KB | 表示 | |
CIF形式データ | 9bjk_validation.cif.gz | 33.9 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/bj/9bjk ftp://data.pdbj.org/pub/pdb/validation_reports/bj/9bjk | HTTPS FTP |
-関連構造データ
関連構造データ | 44635MC 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 |
-リンク
-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: 14730.255 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Lama glama (ラマ) / 発現宿主: Escherichia coli (大腸菌) |
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#2: タンパク質 | 分子量: 47920.734 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Mus musculus (ハツカネズミ) / 遺伝子: Oprm1, Mor, Oprm 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P42866 |
#3: 化合物 | ChemComp-A1APV / 分子量: 327.374 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C19H21NO4 / タイプ: SUBJECT OF INVESTIGATION |
#4: 化合物 | ChemComp-A1APU / 分子量: 605.746 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C36H35N3O4S / タイプ: SUBJECT OF INVESTIGATION |
研究の焦点であるリガンドがあるか | 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: mu-type opioid receptor with kappa-type opioid receptor ICL3 in complex with Nb6, naloxone and a negative allosteric modulator タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
緩衝液 | pH: 7.4 |
試料 | 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 |
-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 / 最大 デフォーカス(公称値): 1400 nm / 最小 デフォーカス(公称値): 600 nm |
撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
-解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3次元再構成 | 解像度: 3.26 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 128613 / 対称性のタイプ: POINT |