登録情報 データベース : EMDB / ID : EMD-43280 ダウンロードとリンクタイトル Cryo-EM structure of short form insulin receptor (IR-A) with three IGF2 bound, asymmetric conformation. マップデータCryo-EM structure of short form insulin receptor (IR-A) with three IGF2 bound, asymmetric conformation. 詳細 試料複合体 : Short form insulin receptor (IR-A) with three IGF2 bound, asymmetric conformation.タンパク質・ペプチド : Isoform Short of Insulin receptorタンパク質・ペプチド : Insulin-like growth factor II 詳細 キーワード Insulin receptor / IGF2 / RTK / SIGNALING 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
negative regulation of muscle cell differentiation / positive regulation of skeletal muscle tissue growth / embryonic placenta morphogenesis / regulation of muscle cell differentiation / Signaling by Type 1 Insulin-like Growth Factor 1 Receptor (IGF1R) / IRS-related events triggered by IGF1R / genomic imprinting / regulation of female gonad development / positive regulation of organ growth / positive regulation of meiotic cell cycle ... negative regulation of muscle cell differentiation / positive regulation of skeletal muscle tissue growth / embryonic placenta morphogenesis / regulation of muscle cell differentiation / Signaling by Type 1 Insulin-like Growth Factor 1 Receptor (IGF1R) / IRS-related events triggered by IGF1R / genomic imprinting / regulation of female gonad development / positive regulation of organ growth / positive regulation of meiotic cell cycle / insulin-like growth factor II binding / positive regulation of developmental growth / male sex determination / insulin receptor complex / transmembrane receptor protein tyrosine kinase activator activity / insulin-like growth factor I binding / positive regulation of multicellular organism growth / exocrine pancreas development / positive regulation of protein-containing complex disassembly / dendritic spine maintenance / positive regulation of vascular endothelial cell proliferation / cargo receptor activity / insulin binding / neuronal cell body membrane / adrenal gland development / PTB domain binding / Signaling by Insulin receptor / IRS activation / positive regulation of activated T cell proliferation / positive regulation of respiratory burst / amyloid-beta clearance / regulation of embryonic development / positive regulation of cell division / positive regulation of receptor internalization / protein kinase activator activity / insulin receptor substrate binding / epidermis development / positive regulation of glycogen biosynthetic process / Signal attenuation / embryonic placenta development / SHC-related events triggered by IGF1R / phosphatidylinositol 3-kinase binding / positive regulation of insulin receptor signaling pathway / transport across blood-brain barrier / heart morphogenesis / activation of protein kinase B activity / Insulin receptor recycling / insulin-like growth factor receptor binding / striated muscle cell differentiation / dendrite membrane / neuron projection maintenance / positive regulation of MAP kinase activity / positive regulation of mitotic nuclear division / Insulin receptor signalling cascade / receptor-mediated endocytosis / insulin-like growth factor receptor signaling pathway / protein serine/threonine kinase activator activity / platelet alpha granule lumen / positive regulation of glycolytic process / learning / animal organ morphogenesis / positive regulation of D-glucose import / insulin receptor binding / growth factor activity / placental growth factor receptor activity / insulin receptor activity / vascular endothelial growth factor receptor activity / hepatocyte growth factor receptor activity / macrophage colony-stimulating factor receptor activity / platelet-derived growth factor alpha-receptor activity / platelet-derived growth factor beta-receptor activity / stem cell factor receptor activity / boss receptor activity / protein tyrosine kinase collagen receptor activity / brain-derived neurotrophic factor receptor activity / transmembrane-ephrin receptor activity / GPI-linked ephrin receptor activity / epidermal growth factor receptor activity / fibroblast growth factor receptor activity / insulin-like growth factor receptor activity / receptor protein-tyrosine kinase / peptidyl-tyrosine phosphorylation / hormone activity / caveola / receptor internalization / memory / cellular response to insulin stimulus / glucose metabolic process / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / male gonad development / osteoblast differentiation / positive regulation of nitric oxide biosynthetic process / integrin binding / late endosome / insulin receptor signaling pathway / glucose homeostasis / Platelet degranulation / amyloid-beta binding / positive regulation of protein phosphorylation / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling 類似検索 - 分子機能 Insulin-like growth factor II E-peptide, C-terminal / Insulin-like growth factor II / Insulin-like growth factor II E-peptide / Insulin-like growth factor / 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. / Insulin family ... Insulin-like growth factor II E-peptide, C-terminal / Insulin-like growth factor II / Insulin-like growth factor II E-peptide / Insulin-like growth factor / 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. / Insulin family / Insulin-like / Insulin/IGF/Relaxin family / Insulin / insulin-like growth factor / relaxin family. / Insulin, conserved site / Insulin family signature. / Insulin-like superfamily / 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 Insulin-like growth factor 2 / Insulin receptor 類似検索 - 構成要素生物種 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 : 3.8 Å 詳細 データ登録者An W / Hall C / Li J / Huang A / Wu J / Park J / Bai XC / Choi E 資金援助 米国, 1件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) GM136976 米国
引用ジャーナル : Nat Commun / 年 : 2024タイトル : Activation of the insulin receptor by insulin-like growth factor 2.著者 : Weidong An / Catherine Hall / Jie Li / Albert Hung / Jiayi Wu / Junhee Park / Liwei Wang / Xiao-Chen Bai / Eunhee Choi / 要旨 : Insulin receptor (IR) controls growth and metabolism. Insulin-like growth factor 2 (IGF2) has different binding properties on two IR isoforms, mimicking insulin's function. However, the molecular ... Insulin receptor (IR) controls growth and metabolism. Insulin-like growth factor 2 (IGF2) has different binding properties on two IR isoforms, mimicking insulin's function. However, the molecular mechanism underlying IGF2-induced IR activation remains unclear. Here, we present cryo-EM structures of full-length human long isoform IR (IR-B) in both the inactive and IGF2-bound active states, and short isoform IR (IR-A) in the IGF2-bound active state. Under saturated IGF2 concentrations, both the IR-A and IR-B adopt predominantly asymmetric conformations with two or three IGF2s bound at site-1 and site-2, which differs from that insulin saturated IR forms an exclusively T-shaped symmetric conformation. IGF2 exhibits a relatively weak binding to IR site-2 compared to insulin, making it less potent in promoting full IR activation. Cell-based experiments validated the functional importance of IGF2 binding to two distinct binding sites in optimal IR signaling and trafficking. In the inactive state, the C-terminus of α-CT of IR-B contacts FnIII-2 domain of the same protomer, hindering its threading into the C-loop of IGF2, thus reducing the association rate of IGF2 with IR-B. Collectively, our studies demonstrate the activation mechanism of IR by IGF2 and reveal the molecular basis underlying the different affinity of IGF2 to IR-A and IR-B. 履歴 登録 2024年1月6日 - ヘッダ(付随情報) 公開 2024年3月27日 - マップ公開 2024年3月27日 - 更新 2024年10月23日 - 現状 2024年10月23日 処理サイト : RCSB / 状態 : 公開
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