+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-43279 | |||||||||
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タイトル | Cryo-EM structure of short form insulin receptor (IR-A) with four IGF2 bound, symmetric conformation. | |||||||||
マップデータ | Cryo-EM structure of short form insulin receptor (IR-A) with four IGF2 bound, symmetric conformation. | |||||||||
試料 |
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キーワード | Insulin receptor (インスリン受容体) / IGF2 / RTK / SIGNALING PROTEIN | |||||||||
機能・相同性 | 機能・相同性情報 spongiotrophoblast cell proliferation / positive regulation of skeletal muscle tissue growth / negative regulation of muscle cell differentiation / 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 / regulation of female gonad development / positive regulation of meiotic cell cycle / ゲノム刷り込み ...spongiotrophoblast cell proliferation / positive regulation of skeletal muscle tissue growth / negative regulation of muscle cell differentiation / 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 / regulation of female gonad development / positive regulation of meiotic cell cycle / ゲノム刷り込み / positive regulation of organ growth / positive regulation of developmental growth / insulin-like growth factor II binding / male sex determination / exocrine pancreas development / insulin receptor complex / insulin-like growth factor I binding / positive regulation of multicellular organism growth / insulin receptor activity / positive regulation of protein-containing complex disassembly / cargo receptor activity / positive regulation of vascular endothelial cell proliferation / dendritic spine maintenance / insulin binding / PTB domain binding / adrenal gland development / neuronal cell body membrane / Signaling by Insulin receptor / transmembrane receptor protein tyrosine kinase activator activity / IRS activation / positive regulation of activated T cell proliferation / amyloid-beta clearance / activation of protein kinase activity / positive regulation of respiratory burst / regulation of embryonic development / positive regulation of receptor internalization / transport across blood-brain barrier / positive regulation of cell division / insulin receptor substrate binding / embryonic placenta development / epidermis development / positive regulation of glycogen biosynthetic process / SHC-related events triggered by IGF1R / Signal attenuation / phosphatidylinositol 3-kinase binding / heart morphogenesis / positive regulation of insulin receptor signaling pathway / dendrite membrane / striated muscle cell differentiation / Insulin receptor recycling / insulin-like growth factor receptor binding / neuron projection maintenance / activation of protein kinase B activity / protein serine/threonine kinase activator activity / positive regulation of glycolytic process / Insulin receptor signalling cascade / receptor-mediated endocytosis / positive regulation of mitotic nuclear division / insulin-like growth factor receptor signaling pathway / platelet alpha granule lumen / 学習 / カベオラ / positive regulation of glucose import / animal organ morphogenesis / growth factor activity / positive regulation of MAP kinase activity / insulin receptor binding / hormone activity / receptor internalization / 受容体型チロシンキナーゼ / 記憶 / cellular response to growth factor stimulus / osteoblast differentiation / peptidyl-tyrosine phosphorylation / cellular response to insulin stimulus / male gonad development / cell surface receptor protein tyrosine kinase signaling pathway / glucose metabolic process / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / positive regulation of nitric oxide biosynthetic process / positive regulation of peptidyl-tyrosine phosphorylation / integrin binding / late endosome / glucose homeostasis / Platelet degranulation / insulin receptor signaling pathway / amyloid-beta binding / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / protein tyrosine kinase activity / in utero embryonic development / positive regulation of MAPK cascade / protein autophosphorylation / リソソーム / receptor ligand activity / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / receptor complex / endosome membrane / carbohydrate metabolic process / positive regulation of cell migration / positive regulation of protein phosphorylation 類似検索 - 分子機能 | |||||||||
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: 3.6 Å | |||||||||
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
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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 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_43279.map.gz | 45 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-43279-v30.xml emd-43279.xml | 19.1 KB 19.1 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_43279.png | 36.8 KB | ||
Filedesc metadata | emd-43279.cif.gz | 6.6 KB | ||
その他 | emd_43279_half_map_1.map.gz emd_43279_half_map_2.map.gz | 57.5 MB 57.5 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-43279 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-43279 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_43279.map.gz / 形式: CCP4 / 大きさ: 75.1 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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注釈 | Cryo-EM structure of short form insulin receptor (IR-A) with four IGF2 bound, symmetric conformation. | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.08 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: Cryo-EM structure of short form insulin receptor (IR-A)...
ファイル | emd_43279_half_map_1.map | ||||||||||||
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注釈 | Cryo-EM structure of short form insulin receptor (IR-A) with four IGF2 bound, symmetric conformation. Half map 1. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Cryo-EM structure of short form insulin receptor (IR-A)...
ファイル | emd_43279_half_map_2.map | ||||||||||||
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注釈 | Cryo-EM structure of short form insulin receptor (IR-A) with four IGF2 bound, symmetric conformation. Half map 2. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : Short form insulin receptor (IR-A) with four IGF2 bound, symmetri...
全体 | 名称: Short form insulin receptor (IR-A) with four IGF2 bound, symmetric conformation. |
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要素 |
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-超分子 #1: Short form insulin receptor (IR-A) with four IGF2 bound, symmetri...
超分子 | 名称: Short form insulin receptor (IR-A) with four IGF2 bound, symmetric conformation. タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Isoform Short of Insulin receptor
分子 | 名称: Isoform Short of Insulin receptor / タイプ: protein_or_peptide / ID: 1 / コピー数: 2 / 光学異性体: LEVO / EC番号: 受容体型チロシンキナーゼ |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 155.329094 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: MATGGRRGAA AAPLLVAVAA LLLGAAGHLY PGEVCPGMDI RNNLTRLHEL ENCSVIEGHL QILLMFKTRP EDFRDLSFPK LIMITDYLL LFRVYGLESL KDLFPNLTVI RGSRLFFNYA LVIFEMVHLK ELGLYNLMNI TRGSVRIEKN NELCYLATID W SRILDSVE ...文字列: MATGGRRGAA AAPLLVAVAA LLLGAAGHLY PGEVCPGMDI RNNLTRLHEL ENCSVIEGHL QILLMFKTRP EDFRDLSFPK LIMITDYLL LFRVYGLESL KDLFPNLTVI RGSRLFFNYA LVIFEMVHLK ELGLYNLMNI TRGSVRIEKN NELCYLATID W SRILDSVE DNYIVLNKDD NEECGDICPG TAKGKTNCPA TVINGQFVER CWTHSHCQKV CPTICKSHGC TAEGLCCHSE CL GNCSQPD DPTKCVACRN FYLDGRCVET CPPPYYHFQD WRCVNFSFCQ DLHHKCKNSR RQGCHQYVIH NNKCIPECPS GYT MNSSNL LCTPCLGPCP KVCHLLEGEK TIDSVTSAQE LRGCTVINGS LIINIRGGNN LAAELEANLG LIEEISGYLK IRRS YALVS LSFFRKLRLI RGETLEIGNY SFYALDNQNL RQLWDWSKHN LTITQGKLFF HYNPKLCLSE IHKMEEVSGT KGRQE RNDI ALKTNGDQAS CENELLKFSY IRTSFDKILL RWEPYWPPDF RDLLGFMLFY KEAPYQNVTE FDGQDACGSN SWTVVD IDP PLRSNDPKSQ NHPGWLMRGL KPWTQYAIFV KTLVTFSDER RTYGAKSDII YVQTDATNPS VPLDPISVSN SSSQIIL KW KPPSDPNGNI THYLVFWERQ AEDSELFELD YCLKGLKLPS RTWSPPFESE DSQKHNQSEY EDSAGECCSC PKTDSQIL K ELEESSFRKT FEDYLHNVVF VPRPSRKRRS LGDVGNVTVA VPTVAAFPNT SSTSVPTSPE EHRPFEKVVN KESLVISGL RHFTGYRIEL QACNQDTPEE RCSVAAYVSA RTMPEAKADD IVGPVTHEIF ENNVVHLMWQ EPKEPNGLIV LYEVSYRRYG DEELHLCVS RKHFALERGC RLRGLSPGNY SVRIRATSLA GNGSWTEPTY FYVTDYLDVP SNIAKIIIGP LIFVFLFSVV I GSIYLFLR KRQPDGPLGP LYASSNPEYL SASDVFPCSV YVPDEWEVSR EKITLLRELG QGSFGMVYEG NARDIIKGEA ET RVAVKTV NESASLRERI EFLNEASVMK GFTCHHVVRL LGVVSKGQPT LVVMELMAHG DLKSYLRSLR PEAENNPGRP PPT LQEMIQ MAAEIADGMA YLNAKKFVHR DLAARNCMVA HDFTVKIGDF GMTRDIYETD YYRKGGKGLL PVRWMAPESL KDGV FTTSS DMWSFGVVLW EITSLAEQPY QGLSNEQVLK FVMDGGYLDQ PDNCPERVTD LMRMCWQFNP KMRPTFLEIV NLLKD DLHP SFPEVSFFHS EENKAPESEE LEMEFEDMEN VPLDRSSHCQ REEAGGRDGG SSLGFKRSYE EHIPYTHMNG GKKNGR ILT LPRSNPS UniProtKB: インスリン受容体 |
-分子 #2: Insulin-like growth factor II
分子 | 名称: Insulin-like growth factor II / タイプ: protein_or_peptide / ID: 2 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 20.170398 KDa |
組換発現 | 生物種: Escherichia coli (大腸菌) |
配列 | 文字列: MGIPMGKSML VLLTFLAFAS CCIAAYRPSE TLCGGELVDT LQFVCGDRGF YFSRPASRVS RRSRGIVEEC CFRSCDLALL ETYCATPAK SERDVSTPPT VLPDNFPRYP VGKFFQYDTW KQSTQRLRRG LPALLRARRG HVLAKELEAF REAKRHRPLI A LPTQDPAH GGAPPEMASN RK UniProtKB: インスリン様成長因子2 |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy / 最大 デフォーカス(公称値): 2.6 µm / 最小 デフォーカス(公称値): 1.6 µm |
特殊光学系 | エネルギーフィルター - 名称: GIF Bioquantum / エネルギーフィルター - スリット幅: 20 eV |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 60.0 e/Å2 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
粒子像選択 | 選択した数: 3422813 |
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初期モデル | モデルのタイプ: OTHER |
初期 角度割当 | タイプ: PROJECTION MATCHING / ソフトウェア - 名称: RELION |
最終 3次元分類 | ソフトウェア - 名称: RELION |
最終 角度割当 | タイプ: PROJECTION MATCHING / ソフトウェア - 名称: RELION |
最終 再構成 | 想定した対称性 - 点群: C2 (2回回転対称) / 解像度のタイプ: BY AUTHOR / 解像度: 3.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION / 使用した粒子像数: 66937 |
-原子モデル構築 1
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT |
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得られたモデル | PDB-8vjb: |