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 / insulin receptor complex / male sex determination / positive regulation of protein-containing complex disassembly / insulin-like growth factor I binding / exocrine pancreas development / dendritic spine maintenance ... regulation of female gonad development / positive regulation of meiotic cell cycle / insulin-like growth factor II binding / positive regulation of developmental growth / insulin receptor complex / male sex determination / positive regulation of protein-containing complex disassembly / insulin-like growth factor I binding / exocrine pancreas development / dendritic spine maintenance / cargo receptor activity / insulin binding / adrenal gland development / neuronal cell body membrane / PTB domain binding / Signaling by Insulin receptor / IRS activation / positive regulation of respiratory burst / amyloid-beta clearance / regulation of embryonic development / positive regulation of receptor internalization / insulin receptor substrate binding / protein kinase activator activity / epidermis development / positive regulation of glycogen biosynthetic process / Signal attenuation / transport across blood-brain barrier / heart morphogenesis / phosphatidylinositol 3-kinase binding / Insulin receptor recycling / insulin-like growth factor receptor binding / neuron projection maintenance / dendrite membrane / positive regulation of mitotic nuclear division / Insulin receptor signalling cascade / insulin receptor activity / receptor-mediated endocytosis / learning / positive regulation of glycolytic process / positive regulation of D-glucose import / receptor protein-tyrosine kinase / cellular response to growth factor stimulus / receptor internalization / caveola / memory / cellular response to insulin stimulus / male gonad development / positive regulation of nitric oxide biosynthetic process / late endosome / insulin receptor signaling pathway / glucose homeostasis / amyloid-beta binding / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / protein autophosphorylation / protein tyrosine kinase activity / lysosome / positive regulation of canonical NF-kappaB signal transduction / receptor complex / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of MAPK cascade / endosome membrane / positive regulation of cell migration / G protein-coupled receptor signaling pathway / protein domain specific binding / symbiont entry into host cell / external side of plasma membrane / axon / positive regulation of cell population proliferation / regulation of DNA-templated transcription / protein-containing complex binding / GTP binding / positive regulation of DNA-templated transcription / extracellular exosome / ATP binding / identical protein binding / membrane / 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 III domain / : / 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 / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein tyrosine and serine/threonine kinase / 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7月16日 - 現状 2025年7月16日 処理サイト : PDBj / 状態 : 公開
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