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基本情報
登録情報 | データベース: PDB / ID: 6bfc | |||||||||||||||
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タイトル | Cryo-EM structure of human insulin degrading enzyme in complex with insulin | |||||||||||||||
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![]() | HYDROLASE/HORMONE / IDE / amyloid beta / HORMONE / HYDROLASE-HORMONE complex | |||||||||||||||
機能・相同性 | ![]() insulysin / ubiquitin recycling / insulin catabolic process / insulin metabolic process / amyloid-beta clearance by cellular catabolic process / hormone catabolic process / bradykinin catabolic process / insulin binding / negative regulation of NAD(P)H oxidase activity / regulation of aerobic respiration ...insulysin / ubiquitin recycling / insulin catabolic process / insulin metabolic process / amyloid-beta clearance by cellular catabolic process / hormone catabolic process / bradykinin catabolic process / insulin binding / negative regulation of NAD(P)H oxidase activity / regulation of aerobic respiration / negative regulation of glycogen catabolic process / positive regulation of nitric oxide mediated signal transduction / negative regulation of fatty acid metabolic process / Signaling by Insulin receptor / negative regulation of feeding behavior / peptide catabolic process / IRS activation / Insulin processing / regulation of protein secretion / positive regulation of peptide hormone secretion / positive regulation of respiratory burst / amyloid-beta clearance / Regulation of gene expression in beta cells / negative regulation of acute inflammatory response / peroxisomal matrix / positive regulation of protein autophosphorylation / alpha-beta T cell activation / positive regulation of dendritic spine maintenance / Synthesis, secretion, and deacylation of Ghrelin / negative regulation of respiratory burst involved in inflammatory response / amyloid-beta metabolic process / negative regulation of protein secretion / positive regulation of glycogen biosynthetic process / negative regulation of gluconeogenesis / Signal attenuation / fatty acid homeostasis / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / positive regulation of insulin receptor signaling pathway / negative regulation of lipid catabolic process / regulation of protein localization to plasma membrane / positive regulation of lipid biosynthetic process / negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway / activation of protein kinase B activity / COPI-mediated anterograde transport / transport vesicle / nitric oxide-cGMP-mediated signaling / negative regulation of reactive oxygen species biosynthetic process / Insulin receptor recycling / insulin-like growth factor receptor binding / positive regulation of brown fat cell differentiation / NPAS4 regulates expression of target genes / neuron projection maintenance / endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of nitric-oxide synthase activity / positive regulation of mitotic nuclear division / Insulin receptor signalling cascade / regulation of transmembrane transporter activity / peptide binding / proteolysis involved in protein catabolic process / positive regulation of glycolytic process / positive regulation of long-term synaptic potentiation / endosome lumen / positive regulation of cytokine production / acute-phase response / positive regulation of D-glucose import / positive regulation of protein secretion / positive regulation of cell differentiation / Regulation of insulin secretion / insulin receptor binding / Peroxisomal protein import / wound healing / protein catabolic process / negative regulation of protein catabolic process / antigen processing and presentation of endogenous peptide antigen via MHC class I / hormone activity / regulation of synaptic plasticity / positive regulation of neuron projection development / metalloendopeptidase activity / positive regulation of protein localization to nucleus / Golgi lumen / cognition / glucose metabolic process / positive regulation of protein catabolic process / positive regulation of protein binding / vasodilation / peroxisome / insulin receptor signaling pathway / glucose homeostasis / cell-cell signaling / regulation of protein localization / virus receptor activity / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / protease binding / positive regulation of cell growth / basolateral plasma membrane / secretory granule lumen / endopeptidase activity / positive regulation of canonical NF-kappaB signal transduction / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of MAPK cascade 類似検索 - 分子機能 | |||||||||||||||
生物種 | ![]() | |||||||||||||||
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: 3.7 Å | |||||||||||||||
![]() | Liang, W.G. / Zhang, Z. / Bailey, L.J. / Kossiakoff, A.A. / Tan, Y.Z. / Wei, H. / Carragher, B. / Potter, S.C. / Tang, W.J. | |||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Ensemble cryoEM elucidates the mechanism of insulin capture and degradation by human insulin degrading enzyme. 著者: Zhening Zhang / Wenguang G Liang / Lucas J Bailey / Yong Zi Tan / Hui Wei / Andrew Wang / Mara Farcasanu / Virgil A Woods / Lauren A McCord / David Lee / Weifeng Shang / Rebecca Deprez- ...著者: Zhening Zhang / Wenguang G Liang / Lucas J Bailey / Yong Zi Tan / Hui Wei / Andrew Wang / Mara Farcasanu / Virgil A Woods / Lauren A McCord / David Lee / Weifeng Shang / Rebecca Deprez-Poulain / Benoit Deprez / David R Liu / Akiko Koide / Shohei Koide / Anthony A Kossiakoff / Sheng Li / Bridget Carragher / Clinton S Potter / Wei-Jen Tang / ![]() ![]() 要旨: Insulin degrading enzyme (IDE) plays key roles in degrading peptides vital in type two diabetes, Alzheimer's, inflammation, and other human diseases. However, the process through which IDE recognizes ...Insulin degrading enzyme (IDE) plays key roles in degrading peptides vital in type two diabetes, Alzheimer's, inflammation, and other human diseases. However, the process through which IDE recognizes peptides that tend to form amyloid fibrils remained unsolved. We used cryoEM to understand both the apo- and insulin-bound dimeric IDE states, revealing that IDE displays a large opening between the homologous ~55 kDa N- and C-terminal halves to allow selective substrate capture based on size and charge complementarity. We also used cryoEM, X-ray crystallography, SAXS, and HDX-MS to elucidate the molecular basis of how amyloidogenic peptides stabilize the disordered IDE catalytic cleft, thereby inducing selective degradation by substrate-assisted catalysis. Furthermore, our insulin-bound IDE structures explain how IDE processively degrades insulin by stochastically cutting either chain without breaking disulfide bonds. Together, our studies provide a mechanism for how IDE selectively degrades amyloidogenic peptides and offers structural insights for developing IDE-based therapies. | |||||||||||||||
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 357.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 282.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 7041MC ![]() 7062C ![]() 7065C ![]() 7066C ![]() 7090C ![]() 7091C ![]() 7092C ![]() 7093C ![]() 5wobC ![]() 6b3qC ![]() 6b70C ![]() 6b7yC ![]() 6b7zC ![]() 6bf6C ![]() 6bf7C ![]() 6bf8C ![]() 6bf9C 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 |
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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: 111866.484 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: タンパク質 | 分子量: 11989.862 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() 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: Insulin bound insulin degrading enzyme / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT | ||||||||||||||||||||
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分子量 | 値: 0.1 MDa / 実験値: YES | ||||||||||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | ||||||||||||||||||||
緩衝液 | pH: 7.8 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Homemade | ||||||||||||||||||||
急速凍結 | 装置: HOMEMADE PLUNGER / 凍結剤: ETHANE / 湿度: 85 % / 凍結前の試料温度: 293 K / 詳細: Grids made using Spotiton |
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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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 22500 X / 倍率(補正後): 46598 X / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 940 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER 最高温度: 70 K / 最低温度: 70 K / Residual tilt: 10 mradians |
撮影 | 平均露光時間: 10 sec. / 電子線照射量: 71.4 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 3 / 実像数: 3085 |
画像スキャン | サンプリングサイズ: 5 µm / 横: 3710 / 縦: 3838 / 動画フレーム数/画像: 50 / 利用したフレーム数/画像: 1-50 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.12_2829: / 分類: 精密化 | ||||||||||||||||||||||||||||||||||||||||
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 762283 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 148392 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 2 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 111.9 / プロトコル: FLEXIBLE FIT / 空間: REAL | ||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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