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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: 10fl | |||||||||||||||||||||
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| タイトル | SK5G-Germline | |||||||||||||||||||||
要素 |
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キーワード | SIGNALING PROTEIN/Immune System / NMDAR / antibody / SIGNALING PROTEIN / SIGNALING PROTEIN-Immune System complex | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報glycine-gated cation channel activity / excitatory chemical synaptic transmission / Activated NTRK2 signals through FYN / Synaptic adhesion-like molecules / propylene metabolic process / response to glycine / Assembly and cell surface presentation of NMDA receptors / negative regulation of dendritic spine maintenance / neurotransmitter receptor complex / Neurexins and neuroligins ...glycine-gated cation channel activity / excitatory chemical synaptic transmission / Activated NTRK2 signals through FYN / Synaptic adhesion-like molecules / propylene metabolic process / response to glycine / Assembly and cell surface presentation of NMDA receptors / negative regulation of dendritic spine maintenance / neurotransmitter receptor complex / Neurexins and neuroligins / regulation of monoatomic cation transmembrane transport / NMDA glutamate receptor activity / NMDA selective glutamate receptor complex / glutamate binding / glutamate receptor signaling pathway / ligand-gated sodium channel activity / calcium ion transmembrane import into cytosol / protein heterotetramerization / glycine binding / positive regulation of reactive oxygen species biosynthetic process / Negative regulation of NMDA receptor-mediated neuronal transmission / Unblocking of NMDA receptors, glutamate binding and activation / monoatomic cation transmembrane transport / Long-term potentiation / positive regulation of calcium ion transport into cytosol / regulation of neuronal synaptic plasticity / monoatomic cation transport / ligand-gated monoatomic ion channel activity / synaptic cleft / calcium ion homeostasis / MECP2 regulates neuronal receptors and channels / positive regulation of synaptic transmission, glutamatergic / EPHB-mediated forward signaling / glutamate-gated calcium ion channel activity / excitatory synapse / ionotropic glutamate receptor signaling pathway / Ras activation upon Ca2+ influx through NMDA receptor / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / positive regulation of excitatory postsynaptic potential / sodium ion transmembrane transport / synaptic membrane / synaptic transmission, glutamatergic / excitatory postsynaptic potential / regulation of membrane potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / brain development / visual learning / regulation of synaptic plasticity / postsynaptic density membrane / calcium ion transmembrane transport / terminal bouton / synaptic vesicle / late endosome / long-term synaptic potentiation / amyloid-beta binding / RAF/MAP kinase cascade / signaling receptor activity / dendritic spine / chemical synaptic transmission / cytoskeleton / response to ethanol / learning or memory / calmodulin binding / postsynaptic membrane / lysosome / neuron projection / postsynaptic density / calcium ion binding / synapse / dendrite / endoplasmic reticulum membrane / protein-containing complex binding / cell surface / positive regulation of transcription by RNA polymerase II / zinc ion binding / plasma membrane / cytoplasm 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: 3.81 Å | |||||||||||||||||||||
データ登録者 | Kleeman, S.O. / Furukawa, H.F. | |||||||||||||||||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Nature / 年: 2026タイトル: Ectopic NMDAR expression in cancer unmasks germline-encoded autoimmunity. 著者: Sam O Kleeman / Kevin Michalski / Xiang Zhao / Ruben Steigerwald / Miriam Ferrer / Llewelyn Levett / Ethan Ertel / Austin Schultz / Noriko Simorowski / Pamela Moody / Tse-Luen Wee / Cristina ...著者: Sam O Kleeman / Kevin Michalski / Xiang Zhao / Ruben Steigerwald / Miriam Ferrer / Llewelyn Levett / Ethan Ertel / Austin Schultz / Noriko Simorowski / Pamela Moody / Tse-Luen Wee / Cristina Valente / Sharon Fox / Mateusz Makuch / Selina Thomsen / Ruby Harrison / Claire Regan / Jonathan Preall / Qing Gao / Dennis Thomas / Jill Habel / Rachel Rubino / Sarosh Irani / Hiro Furukawa / Tobias Janowitz / ![]() 要旨: Autoimmunity and anti-cancer immunity lie on the same biological continuum, but their link remains obscure. The paraneoplastic neurological syndrome ANRE (anti-NMDA receptor (NMDAR) encephalitis) is ...Autoimmunity and anti-cancer immunity lie on the same biological continuum, but their link remains obscure. The paraneoplastic neurological syndrome ANRE (anti-NMDA receptor (NMDAR) encephalitis) is a paradigm for their connectivity, given that intratumoural NMDAR expression is correlated with the generation of anti-NMDAR antibodies. Here we verify ectopic expression of GluN1 and GluN2B NMDAR subunits in triple-negative breast cancer (TNBC) and model this using orthotopic TNBC tumours with inducible expression of GluN1-GluN2B NMDARs. We show that NMDAR expression is sufficient to induce the recruitment of B cells and their affinity maturation, consistent with an integrated adaptive immune response. Reconstruction of extended intratumoural B cell phylogenies and cryogenic electron microscopy structural analyses demonstrate that affinity-matured hypermutated and class-switched antibodies emerged from pre-existing germline-configuration lower-affinity anti-NMDAR antibodies. Distinct matured antibodies targeted specific epitopes and induced conformational rearrangements within the NMDAR amino-terminal domain, predictive of their functional effects, ranging from inhibition to potentiation. Passive transfer of an NMDAR-potentiating antibody caused autonomic dysregulation and lowered the seizure threshold in healthy female mice, recapitulating key diagnostic criteria of ANRE. We further identify a correlation between intratumoural NMDAR expression and anti-NMDAR antibody titres in patients with TNBC. Taken together, our data establish a direct connection between intratumoural NMDAR expression, antibody maturation and the onset of autoimmunity. These findings suggest that germline-encoded anti-NMDAR antibodies contribute to immune surveillance but can also trigger autoimmune disease after maturation, revealing a mechanistic trade-off between cancer immunity and neurotoxicity. | |||||||||||||||||||||
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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 | 10fl.cif.gz | 571.1 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb10fl.ent.gz | 455.8 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 10fl.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/0f/10fl ftp://data.pdbj.org/pub/pdb/validation_reports/0f/10fl | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 75134MC ![]() 10enC ![]() 10evC ![]() 10exC ![]() 10eyC ![]() 10ezC ![]() 10fdC ![]() 10feC ![]() 10ffC ![]() 10fnC ![]() 10foC 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: 94854.508 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: GRIN1, NMDAR1 / 細胞株 (発現宿主): Sf9発現宿主: ![]() 参照: UniProt: Q05586 #2: タンパク質 | 分子量: 92885.961 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: GRIN2B, NMDAR2B / 細胞株 (発現宿主): Sf9発現宿主: ![]() 参照: UniProt: Q13224 #3: 抗体 | | 分子量: 12440.960 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト)#4: 抗体 | | 分子量: 13179.729 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト)Has protein modification | Y | |
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-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: SK5G-Germline IgG in complex with GluN1-GluN2B NMDAR protein タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 分子量 | 実験値: NO |
| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) |
| 緩衝液 | pH: 7.4 |
| 試料 | 濃度: 5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE |
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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 / 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 |
| 撮影 | 電子線照射量: 71.7 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOCONTINUUM (6k x 4k) |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||
| 3次元再構成 | 解像度: 3.81 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 259879 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)

米国, 1件
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FIELD EMISSION GUN