登録情報 データベース : EMDB / ID : EMD-61432 ダウンロードとリンクタイトル Human insulin receptor bound with A62-dimer, Pseudo-gamma conformation マップデータ 詳細 試料複合体 : Human insulin receptor with aptamer complexタンパク質・ペプチド : Insulin receptorタンパク質・ペプチド : Insulin receptorDNA : A62 詳細 キーワード Signaling / aptamer / agonist / complex / MEMBRANE PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
regulation of female gonad development / positive regulation of meiotic cell cycle / insulin-like growth factor II binding / positive regulation of developmental growth / male sex determination / insulin receptor complex / insulin-like growth factor I binding / insulin receptor activity / positive regulation of protein-containing complex disassembly / exocrine pancreas development ... regulation of female gonad development / positive regulation of meiotic cell cycle / insulin-like growth factor II binding / positive regulation of developmental growth / male sex determination / insulin receptor complex / insulin-like growth factor I binding / insulin receptor activity / positive regulation of protein-containing complex disassembly / exocrine pancreas development / dendritic spine maintenance / insulin binding / adrenal gland development / cargo receptor activity / PTB domain binding / Signaling by Insulin receptor / IRS activation / neuronal cell body membrane / positive regulation of respiratory burst / amyloid-beta clearance / regulation of embryonic development / insulin receptor substrate binding / positive regulation of receptor internalization / epidermis development / positive regulation of glycogen biosynthetic process / protein kinase activator activity / Signal attenuation / transport across blood-brain barrier / phosphatidylinositol 3-kinase binding / heart morphogenesis / Insulin receptor recycling / insulin-like growth factor receptor binding / neuron projection maintenance / positive regulation of mitotic nuclear division / Insulin receptor signalling cascade / dendrite membrane / receptor-mediated endocytosis / positive regulation of glycolytic process / positive regulation of D-glucose import across plasma membrane / learning / receptor protein-tyrosine kinase / receptor internalization / caveola / cellular response to growth factor stimulus / male gonad development / cellular response to insulin stimulus / memory / positive regulation of nitric oxide biosynthetic process / insulin receptor signaling pathway / protein autophosphorylation / late endosome / glucose homeostasis / amyloid-beta binding / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / protein tyrosine kinase activity / positive regulation of canonical NF-kappaB signal transduction / positive regulation of MAPK cascade / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / lysosome / signaling receptor complex / endosome membrane / positive regulation of cell migration / G protein-coupled receptor signaling pathway / external side of plasma membrane / protein domain specific binding / axon / positive regulation of cell population proliferation / symbiont entry into host cell / regulation of DNA-templated transcription / positive regulation of DNA-templated transcription / GTP binding / protein-containing complex binding / extracellular exosome / ATP binding / membrane / identical protein binding / plasma membrane 類似検索 - 分子機能 Insulin receptor, trans-membrane domain / Insulin receptor trans-membrane segment / Tyrosine-protein kinase, insulin-like receptor / Tyrosine-protein kinase, receptor class II, conserved site / Receptor tyrosine kinase class II signature. / Receptor L-domain / Furin-like cysteine-rich domain / Receptor L-domain superfamily / Furin-like cysteine rich region / Receptor L domain ... Insulin receptor, trans-membrane domain / Insulin receptor trans-membrane segment / Tyrosine-protein kinase, insulin-like receptor / Tyrosine-protein kinase, receptor class II, conserved site / Receptor tyrosine kinase class II signature. / Receptor L-domain / Furin-like cysteine-rich domain / Receptor L-domain superfamily / Furin-like cysteine rich region / Receptor L domain / Furin-like repeat / Furin-like repeats / Growth factor receptor cysteine-rich domain superfamily / : / Fibronectin type 3 domain / Fibronectin type-III domain profile. / Fibronectin type III / Fibronectin type III superfamily / Tyrosine-protein kinase, catalytic domain / Tyrosine kinase, catalytic domain / Tyrosine protein kinases specific active-site signature. / Tyrosine-protein kinase, active site / Protein tyrosine and serine/threonine kinase / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Immunoglobulin-like fold / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily 類似検索 - ドメイン・相同性生物種 Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 9.35 Å 詳細 データ登録者Kim J / Na H / Yunn N / Ryu S / Cho Y 資金援助 韓国, 1件 詳細 詳細を隠すOrganization Grant number 国 National Research Foundation (NRF, Korea) 韓国
引用ジャーナル : Exp Mol Med / 年 : 2025タイトル : Structural mechanism of insulin receptor activation by a dimeric aptamer agonist.著者 : Junhong Kim / Hyeonjin Na / Si-Young Choi / Eun Ju Oh / Hyunsook Lee / Sung Ho Ryu / Na-Oh Yunn / Yunje Cho / 要旨 : Insulin binding to the insulin receptor (IR) triggers signaling pathways that regulate glucose uptake and cell growth. In previous work, we identified a DNA aptamer, A62, which partially activates ... Insulin binding to the insulin receptor (IR) triggers signaling pathways that regulate glucose uptake and cell growth. In previous work, we identified a DNA aptamer, A62, which partially activates the IR. During engineering aptamers for improved in vivo stability, we discovered that crosslinking two A62 aptamers with linkers of varying lengths led to full phosphorylation of the IR, although activation remained selective to the AKT pathway. Here, to elucidate the mechanism behind this aptamer-induced full activation of the IR, we determined the structure of the IR in complex with a dimeric form of A62 (A62D) linked by an eight-nucleotide connector. We identified three distinct conformations of the IR: arrowhead-shaped, pseudo-arrowhead-shaped and pseudo-gamma-shaped. The pseudo-gamma-shaped conformation closely resembles the structure of a fully active IR bound by a single insulin molecule. In these configurations, only one A62 monomer (A62M) within the A62D dimer binds to the IR dimer. This binding brings the IR monomers into close proximity, promoting intermolecular trans-phosphorylation. Our findings provide valuable structural insights for the development of novel therapeutic strategies targeting the IR. 履歴 登録 2024年9月4日 - ヘッダ(付随情報) 公開 2025年7月16日 - マップ公開 2025年7月16日 - 更新 2025年8月20日 - 現状 2025年8月20日 処理サイト : PDBj / 状態 : 公開
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