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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 8k8e | ||||||
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タイトル | Human gamma-secretase in complex with a substrate mimetic | ||||||
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![]() | MEMBRANE PROTEIN / Complex / protease / substrate mimetic | ||||||
機能・相同性 | ![]() 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 endopeptidase activity / gamma-secretase complex / aspartic endopeptidase activity, intramembrane cleaving / short-term synaptic potentiation / positive regulation of amyloid precursor protein biosynthetic process / Noncanonical activation of NOTCH3 ...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 endopeptidase activity / gamma-secretase complex / aspartic endopeptidase activity, intramembrane cleaving / short-term synaptic potentiation / positive regulation of amyloid precursor protein biosynthetic process / Noncanonical activation of NOTCH3 / protein catabolic process at postsynapse / TGFBR3 PTM regulation / sequestering of calcium ion / Notch receptor processing / synaptic vesicle targeting / positive regulation of coagulation / negative regulation of axonogenesis / central nervous system myelination / membrane protein intracellular domain proteolysis / growth factor receptor binding / T cell activation involved in immune response / skin morphogenesis / choline transport / NOTCH4 Activation and Transmission of Signal to the Nucleus / dorsal/ventral neural tube patterning / neural retina development / regulation of resting membrane potential / myeloid dendritic cell differentiation / L-glutamate import across plasma membrane / Regulated proteolysis of p75NTR / regulation of phosphorylation / metanephros development / locomotion / brain morphogenesis / endoplasmic reticulum calcium ion homeostasis / nuclear outer membrane / amyloid precursor protein metabolic process / regulation of synaptic vesicle cycle / regulation of long-term synaptic potentiation / smooth endoplasmic reticulum calcium ion homeostasis / embryonic limb morphogenesis / regulation of postsynapse organization / astrocyte activation involved in immune response / cell fate specification / regulation of canonical Wnt signaling pathway / skeletal system morphogenesis / aggresome / myeloid cell homeostasis / azurophil granule membrane / G protein-coupled dopamine receptor signaling pathway / glutamate receptor signaling pathway / 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 / ciliary rootlet / Golgi cisterna membrane / positive regulation of dendritic spine development / positive regulation of amyloid fibril formation / regulation of neuron projection development / protein glycosylation / positive regulation of receptor recycling / blood vessel development / mitochondrial transport / amyloid precursor protein catabolic process / adult behavior / heart looping / cerebral cortex cell migration / amyloid-beta formation / membrane protein ectodomain proteolysis / negative regulation of apoptotic signaling pathway / autophagosome assembly / EPH-ephrin mediated repulsion of cells / negative regulation of ubiquitin-dependent protein catabolic process / endopeptidase activator activity / neuron development / somitogenesis / smooth endoplasmic reticulum / hematopoietic progenitor cell differentiation / Nuclear signaling by ERBB4 / calcium ion homeostasis / T cell proliferation / regulation of synaptic transmission, glutamatergic / rough endoplasmic reticulum / Notch signaling pathway / Degradation of the extracellular matrix / neuron projection maintenance / NOTCH2 Activation and Transmission of Signal to the Nucleus / cerebellum development / cellular response to calcium ion / NRIF signals cell death from the nucleus / Activated NOTCH1 Transmits Signal to the Nucleus / dendritic shaft / thymus development / positive regulation of glycolytic process / epithelial cell proliferation / post-embryonic development / PDZ domain binding / astrocyte activation / NOTCH3 Activation and Transmission of Signal to the Nucleus / apoptotic signaling pathway / synapse organization / neuromuscular junction 類似検索 - 分子機能 | ||||||
生物種 | ![]() synthetic construct (人工物) | ||||||
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: 2.6 Å | ||||||
![]() | Shi, Y.G. / Zhou, R. / Wolfe, M.S. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Familial Alzheimer mutations stabilize synaptotoxic γ-secretase-substrate complexes. 著者: Sujan Devkota / Rui Zhou / Vaishnavi Nagarajan / Masato Maesako / Hung Do / Arshad Noorani / Caitlin Overmeyer / Sanjay Bhattarai / Justin T Douglas / Anita Saraf / Yinglong Miao / Brian D ...著者: Sujan Devkota / Rui Zhou / Vaishnavi Nagarajan / Masato Maesako / Hung Do / Arshad Noorani / Caitlin Overmeyer / Sanjay Bhattarai / Justin T Douglas / Anita Saraf / Yinglong Miao / Brian D Ackley / Yigong Shi / Michael S Wolfe / ![]() ![]() 要旨: Mutations that cause familial Alzheimer's disease (FAD) are found in amyloid precursor protein (APP) and presenilin, the catalytic component of γ-secretase, that together produce amyloid β-peptide ...Mutations that cause familial Alzheimer's disease (FAD) are found in amyloid precursor protein (APP) and presenilin, the catalytic component of γ-secretase, that together produce amyloid β-peptide (Aβ). Nevertheless, whether Aβ is the primary disease driver remains controversial. We report here that FAD mutations disrupt initial proteolytic events in the multistep processing of APP substrate C99 by γ-secretase. Cryoelectron microscopy reveals that a substrate mimetic traps γ-secretase during the transition state, and this structure aligns with activated enzyme-substrate complex captured by molecular dynamics simulations. In silico simulations and in cellulo fluorescence microscopy support stabilization of enzyme-substrate complexes by FAD mutations. Neuronal expression of C99 and/or presenilin-1 in Caenorhabditis elegans leads to synaptic loss only with FAD-mutant transgenes. Designed mutations that stabilize the enzyme-substrate complex and block Aβ production likewise led to synaptic loss. Collectively, these findings implicate the stalled process-not the products-of γ-secretase cleavage of substrates in FAD pathogenesis. | ||||||
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構造の表示
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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ダウンロード
PDBx/mmCIF形式 | ![]() | 283.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 221.5 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 | ![]() 36948MC 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 | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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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) ![]() ![]() |
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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) ![]() ![]() 参照: UniProt: P49768, 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 |
-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) ![]() ![]() |
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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) ![]() ![]() |
-タンパク質・ペプチド , 1種, 1分子 G
#5: タンパク質・ペプチド | 分子量: 1865.307 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
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-糖 , 3種, 8分子 
#6: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
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#7: 多糖 | beta-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose タイプ: oligosaccharide / 分子量: 504.438 Da / 分子数: 1 / 由来タイプ: 組換発現 |
#8: 糖 | ChemComp-NAG / |
-非ポリマー , 2種, 4分子 


#9: 化合物 | ChemComp-PC1 / |
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#10: 化合物 |
-詳細
研究の焦点であるリガンドがあるか | 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: Human gamma-secretase / タイプ: COMPLEX / Entity ID: #1-#5 / 由来: MULTIPLE SOURCES |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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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 / 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) |
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解析
CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
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3次元再構成 | 解像度: 2.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 349532 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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