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基本情報
登録情報 | データベース: PDB / ID: 4uis | ||||||
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タイトル | The cryoEM structure of human gamma-Secretase complex | ||||||
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![]() | HYDROLASE / GAMMA-SECRETASE | ||||||
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 / 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 ...Cajal-Retzius cell differentiation / positive regulation of L-glutamate import across plasma membrane / amyloid precursor protein biosynthetic process / negative regulation of core promoter binding / 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 / 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 / positive regulation of dendritic spine development / positive regulation of amyloid fibril formation / positive regulation of receptor recycling / regulation of neuron projection development / protein glycosylation / 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 / viral release from host cell by cytolysis / 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 / peptidoglycan catabolic process / 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 / sarcolemma 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: 4.4 Å | ||||||
![]() | Sun, L. / Zhao, L. / Yang, G. / Yan, C. / Zhou, R. / Zhou, X. / Xie, T. / Zhao, Y. / Wu, S. / Li, X. / Shi, Y. | ||||||
![]() | ![]() タイトル: Structural basis of human γ-secretase assembly. 著者: Linfeng Sun / Lingyun Zhao / Guanghui Yang / Chuangye Yan / Rui Zhou / Xiaoyuan Zhou / Tian Xie / Yanyu Zhao / Shenjie Wu / Xueming Li / Yigong Shi / ![]() 要旨: The four-component intramembrane protease γ-secretase is intricately linked to the development of Alzheimer's disease. Despite recent structural advances, the transmembrane segments (TMs) of γ- ...The four-component intramembrane protease γ-secretase is intricately linked to the development of Alzheimer's disease. Despite recent structural advances, the transmembrane segments (TMs) of γ-secretase remain to be specifically assigned. Here we report a 3D structure of human γ-secretase at 4.32-Å resolution, determined by single-particle, electron cryomicroscopy in the presence of digitonin and with a T4 lysozyme fused to the amino terminus of presenilin 1 (PS1). The overall structure of this human γ-secretase is very similar to that of wild-type γ-secretase determined in the presence of amphipols. The 20 TMs are unambiguously assigned to the four components, revealing principles of subunit assembly. Within the transmembrane region, PS1 is centrally located, with its amino-terminal fragment (NTF) packing against Pen-2 and its carboxyl-terminal fragment (CTF) interacting with Aph-1. The only TM of nicastrin associates with Aph-1 at the thick end of the TM horseshoe, and the extracellular domain of nicastrin directly binds Pen-2 at the thin end. TM6 and TM7 in PS1, which harbor the catalytic aspartate residues, are located on the convex side of the TM horseshoe. This structure serves as an important framework for understanding the function and mechanism of γ-secretase. | ||||||
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構造の表示
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 286.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 230.5 KB | 表示 | ![]() |
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-関連構造データ
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 63331.977 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: 23547.639 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#3: タンパク質 | 分子量: 16698.539 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#4: タンパク質 | 分子量: 5294.518 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#5: タンパク質 | 分子量: 18435.207 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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 |
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試料調製
構成要素 | 名称: T4-LYSOZYME FUSION GAMMA- SECRETASE / タイプ: COMPLEX |
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緩衝液 | 名称: 0.1% DIGITONIN, 25 MM HEPES, PH 7.4, AND 150 MM NACL. pH: 7.4 詳細: 0.1% DIGITONIN, 25 MM HEPES, PH 7.4, AND 150 MM NACL. |
試料 | 濃度: 4.2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: HOLEY CARBON |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE 詳細: VITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 100, TEMPERATURE- 277, INSTRUMENT- FEI VITROBOT MARK IV, METHOD- BLOT FOR 3 SECONDS BEFORE PLUNGING, |
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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 / 日付: 2014年12月22日 |
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): 3000 nm / 最小 デフォーカス(公称値): 1500 nm / Cs: 1.4 mm |
撮影 | 電子線照射量: 4.5 e/Å2 フィルム・検出器のモデル: DIRECT ELECTRON DE-12 (4k x 3k) |
画像スキャン | デジタル画像の数: 2000 |
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解析
EMソフトウェア |
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対称性 | 点対称性: C1 (非対称) | ||||||||||||
3次元再構成 | 解像度: 4.4 Å / 粒子像の数: 177207 / ピクセルサイズ(公称値): 1.32 Å / ピクセルサイズ(実測値): 1.32 Å 詳細: SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2974. (DEPOSITION ID: 13293 対称性のタイプ: POINT | ||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL / 詳細: METHOD--FLEXIBLE | ||||||||||||
原子モデル構築 | PDB-ID: 4R12 Accession code: 4R12 / Source name: PDB / タイプ: experimental model | ||||||||||||
精密化 | 最高解像度: 4.4 Å | ||||||||||||
精密化ステップ | サイクル: LAST / 最高解像度: 4.4 Å
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