+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8im7 | ||||||
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タイトル | Human gamma-secretase treated with ganglioside GM1 | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / intramembrane protease / lipid / ganglioside / GM1 | ||||||
機能・相同性 | 機能・相同性情報 Cajal-Retzius cell differentiation / positive regulation of L-glutamate import across plasma membrane / amyloid precursor protein biosynthetic process / negative regulation of core promoter binding / positive regulation of coagulation / gamma-secretase complex / aspartic endopeptidase activity, intramembrane cleaving / short-term synaptic potentiation / positive regulation of endopeptidase activity / positive regulation of amyloid precursor protein biosynthetic process ...Cajal-Retzius cell differentiation / positive regulation of L-glutamate import across plasma membrane / amyloid precursor protein biosynthetic process / negative regulation of core promoter binding / positive regulation of coagulation / gamma-secretase complex / aspartic endopeptidase activity, intramembrane cleaving / short-term synaptic potentiation / positive regulation of endopeptidase activity / positive regulation of amyloid precursor protein biosynthetic process / protein catabolic process at postsynapse / Noncanonical activation of NOTCH3 / TGFBR3 PTM regulation / sequestering of calcium ion / Notch receptor processing / central nervous system myelination / synaptic vesicle targeting / negative regulation of axonogenesis / membrane protein intracellular domain proteolysis / regulation of resting membrane potential / choline transport / T cell activation involved in immune response / skin morphogenesis / NOTCH4 Activation and Transmission of Signal to the Nucleus / growth factor receptor binding / regulation of synaptic vesicle cycle / dorsal/ventral neural tube patterning / neural retina development / myeloid dendritic cell differentiation / L-glutamate import across plasma membrane / Regulated proteolysis of p75NTR / endoplasmic reticulum calcium ion homeostasis / metanephros development / regulation of phosphorylation / locomotion / brain morphogenesis / nuclear outer membrane / amyloid precursor protein metabolic process / skeletal system morphogenesis / myeloid cell homeostasis / smooth endoplasmic reticulum calcium ion homeostasis / regulation of long-term synaptic potentiation / astrocyte activation involved in immune response / regulation of canonical Wnt signaling pathway / embryonic limb morphogenesis / aggresome / cell fate specification / glutamate receptor signaling pathway / ciliary rootlet / azurophil granule membrane / regulation of postsynapse organization / G protein-coupled dopamine receptor signaling pathway / Golgi cisterna membrane / positive regulation of amyloid fibril formation / mitochondrial transport / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; アスパラギン酸プロテアーゼ / positive regulation of dendritic spine development / positive regulation of receptor recycling / adult behavior / blood vessel development / regulation of neuron projection development / heart looping / amyloid precursor protein catabolic process / cerebral cortex cell migration / protein glycosylation / amyloid-beta formation / negative regulation of apoptotic signaling pathway / membrane protein ectodomain proteolysis / endopeptidase activator activity / autophagosome assembly / EPH-ephrin mediated repulsion of cells / neuron development / somitogenesis / smooth endoplasmic reticulum / hematopoietic progenitor cell differentiation / negative regulation of ubiquitin-dependent protein catabolic process / calcium ion homeostasis / Nuclear signaling by ERBB4 / T cell proliferation / rough endoplasmic reticulum / Notch signaling pathway / regulation of synaptic transmission, glutamatergic / neuron projection maintenance / NOTCH2 Activation and Transmission of Signal to the Nucleus / Degradation of the extracellular matrix / post-embryonic development / positive regulation of glycolytic process / NRIF signals cell death from the nucleus / cellular response to calcium ion / Activated NOTCH1 Transmits Signal to the Nucleus / negative regulation of protein phosphorylation / cerebellum development / thymus development / epithelial cell proliferation / apoptotic signaling pathway / dendritic shaft / NOTCH3 Activation and Transmission of Signal to the Nucleus / astrocyte activation / PDZ domain binding / neuron migration 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
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: 3.4 Å | ||||||
データ登録者 | Zhou, R. / Yang, G. / Shi, Y. | ||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: Adv Sci (Weinh) / 年: 2023 タイトル: Preferential Regulation of Γ-Secretase-Mediated Cleavage of APP by Ganglioside GM1 Reveals a Potential Therapeutic Target for Alzheimer's Disease. 著者: Xiaotong Wang / Rui Zhou / Xiaqin Sun / Jun Li / Jinxin Wang / Weihua Yue / Lifang Wang / Hesheng Liu / Yigong Shi / Dai Zhang / 要旨: A hallmark of Alzheimer's disease (AD) is the senile plaque, which contains β-amyloid peptides (Aβ). Ganglioside GM1 is the most common brain ganglioside. However, the mechanism of GM1 in ...A hallmark of Alzheimer's disease (AD) is the senile plaque, which contains β-amyloid peptides (Aβ). Ganglioside GM1 is the most common brain ganglioside. However, the mechanism of GM1 in modulating Aβ processing is rarely known. Aβ levels are detected by using Immunohistochemistry (IHC) and enzyme-linked immune-sorbent assay (ELISA). Cryo-electron microscopy (Cryo-EM) is used to determine the structure of γ-secretase supplemented with GM1. The levels of the cleavage of amyloid precursor protein (APP)/Cadherin/Notch1 are detected using Western blot analysis. Y maze, object translocation, and Barnes maze are performed to evaluate cognitive functions. GM1 leads to conformational change of γ-secretase structure and specifically accelerates γ-secretase cleavage of APP without affecting other substrates including Notch1, potentially through its interaction with the N-terminal fragment of presenilin 1 (PS1). Reduction of GM1 levels decreases amyloid plaque deposition and improves cognitive dysfunction. This study reveals the mechanism of GM1 in Aβ generation and provides the evidence that decreasing GM1 levels represents a potential strategy in AD treatment. These results provide insights into the detailed mechanism of the effect of GM1 on PS1, representing a step toward the characterization of its novel role in the modulation of γ-secretase activity and the pathogenesis of AD. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8im7.cif.gz | 253.4 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8im7.ent.gz | 197.2 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8im7.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 8im7_validation.pdf.gz | 942.6 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8im7_full_validation.pdf.gz | 954 KB | 表示 | |
XML形式データ | 8im7_validation.xml.gz | 27.3 KB | 表示 | |
CIF形式データ | 8im7_validation.cif.gz | 41.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/im/8im7 ftp://data.pdbj.org/pub/pdb/validation_reports/im/8im7 | HTTPS FTP |
-関連構造データ
関連構造データ | 35572MC 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 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-タンパク質 , 2種, 2分子 AB
#1: タンパク質 | 分子量: 78483.570 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: NCSTN, KIAA0253, UNQ1874/PRO4317 / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q92542 |
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#2: タンパク質 | 分子量: 52713.535 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: PSEN1, AD3, PS1, PSNL1 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P49768 |
-Gamma-secretase subunit ... , 2種, 2分子 CD
#3: タンパク質 | 分子量: 29017.943 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: APH1A, PSF, CGI-78, UNQ579/PRO1141 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q96BI3 |
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#4: タンパク質 | 分子量: 12038.029 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: PSENEN, PEN2, MDS033 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q9NZ42 |
-糖 , 3種, 12分子
#5: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #6: 多糖 | beta-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...beta-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | #7: 糖 | ChemComp-NAG / |
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-非ポリマー , 2種, 4分子
#8: 化合物 | #9: 化合物 | |
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-詳細
研究の焦点であるリガンドがあるか | N |
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Has protein modification | Y |
-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 |
-試料調製
構成要素 | 名称: human gamma-secretase treated with ganglioside GM1 / タイプ: COMPLEX / Entity ID: #1-#4 / 由来: MULTIPLE SOURCES |
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分子量 | 実験値: NO |
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 7.4 |
試料 | 濃度: 8 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: mono dispersed sample |
急速凍結 | 凍結剤: ETHANE |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 1500 nm |
撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-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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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 134908 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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