- EMDB-2678: Three-dimensional structure of human gamma-secretase at 5.4 angst... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-2678
タイトル
Three-dimensional structure of human gamma-secretase at 5.4 angstrom resoltuion
マップデータ
Reconstruction of human gamma-secretase. The particles were selected by two-steps of 3D classification. This map has good density for the transmembrane domain. All the 19 TM helices and some of the linkers are visible.
試料
試料: human gamma-secretase
タンパク質・ペプチド: gamma-secretase
キーワード
human gamma-secretase / cryo EM
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 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 / 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 / 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
ジャーナル: Nature / 年: 2014 タイトル: Three-dimensional structure of human γ-secretase. 著者: Peilong Lu / Xiao-Chen Bai / Dan Ma / Tian Xie / Chuangye Yan / Linfeng Sun / Guanghui Yang / Yanyu Zhao / Rui Zhou / Sjors H W Scheres / Yigong Shi / 要旨: The γ-secretase complex, comprising presenilin 1 (PS1), PEN-2, APH-1 and nicastrin, is a membrane-embedded protease that controls a number of important cellular functions through substrate cleavage. ...The γ-secretase complex, comprising presenilin 1 (PS1), PEN-2, APH-1 and nicastrin, is a membrane-embedded protease that controls a number of important cellular functions through substrate cleavage. Aberrant cleavage of the amyloid precursor protein (APP) results in aggregation of amyloid-β, which accumulates in the brain and consequently causes Alzheimer's disease. Here we report the three-dimensional structure of an intact human γ-secretase complex at 4.5 Å resolution, determined by cryo-electron-microscopy single-particle analysis. The γ-secretase complex comprises a horseshoe-shaped transmembrane domain, which contains 19 transmembrane segments (TMs), and a large extracellular domain (ECD) from nicastrin, which sits immediately above the hollow space formed by the TM horseshoe. Intriguingly, nicastrin ECD is structurally similar to a large family of peptidases exemplified by the glutamate carboxypeptidase PSMA. This structure serves as an important basis for understanding the functional mechanisms of the γ-secretase complex.
ダウンロード / ファイル: emd_2678.map.gz / 形式: CCP4 / 大きさ: 10.2 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
Reconstruction of human gamma-secretase. The particles were selected by two-steps of 3D classification. This map has good density for the transmembrane domain. All the 19 TM helices and some of the linkers are visible.
想定した対称性 - 点群: C1 (非対称) / 解像度のタイプ: BY AUTHOR / 解像度: 5.4 Å / 解像度の算出法: OTHER / ソフトウェア - 名称: CTFFIND3, RELION 詳細: Use a newly developed statistical movie processing approach to compensate for beam-induced movement. 使用した粒子像数: 37310