- EMDB-2311: Three-dimensional structure of active, full-length human telomera... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-2311
タイトル
Three-dimensional structure of active, full-length human telomerase. Independently refined open monomer structure, determined by single-particle electron microscopy in negative stain
マップデータ
Three-dimensional structure of active, full-length human telomerase. Independently refined open monomer structure, determined by single-particle electron microscopy in negative stain
試料
試料: Three-dimensional structure of active, full-length human telomerase dimer, determined by single-particle electron microscopy in negative stain
タンパク質・ペプチド: Telomerase reverse transcriptase
キーワード
Telomerase reverse transcriptase / human / telomere length extension
機能・相同性
機能・相同性情報
positive regulation of hair cycle / template-free RNA nucleotidyltransferase / positive regulation of transdifferentiation / TERT-RMRP complex / DNA strand elongation / RNA-directed RNA polymerase complex / positive regulation of protein localization to nucleolus / siRNA transcription / telomerase catalytic core complex / RNA-templated DNA biosynthetic process ...positive regulation of hair cycle / template-free RNA nucleotidyltransferase / positive regulation of transdifferentiation / TERT-RMRP complex / DNA strand elongation / RNA-directed RNA polymerase complex / positive regulation of protein localization to nucleolus / siRNA transcription / telomerase catalytic core complex / RNA-templated DNA biosynthetic process / establishment of protein localization to telomere / Regulation of MITF-M-dependent genes involved in DNA replication, damage repair and senescence / nuclear telomere cap complex / siRNA processing / telomere maintenance via recombination / positive regulation of vascular associated smooth muscle cell migration / telomerase holoenzyme complex / telomerase RNA binding / RNA-templated transcription / DNA biosynthetic process / telomeric DNA binding / positive regulation of stem cell proliferation / mitochondrial nucleoid / negative regulation of cellular senescence / Telomere Extension By Telomerase / replicative senescence / positive regulation of Wnt signaling pathway / negative regulation of extrinsic apoptotic signaling pathway in absence of ligand / positive regulation of G1/S transition of mitotic cell cycle / telomere maintenance via telomerase / RNA-directed DNA polymerase activity / negative regulation of endothelial cell apoptotic process / response to cadmium ion / positive regulation of vascular associated smooth muscle cell proliferation / telomere maintenance / positive regulation of nitric-oxide synthase activity / positive regulation of D-glucose import / mitochondrion organization / Formation of the beta-catenin:TCF transactivating complex / transcription coactivator binding / regulation of protein stability / PML body / positive regulation of miRNA transcription / RNA-directed DNA polymerase / telomerase activity / protein import into nucleus / positive regulation of angiogenesis / positive regulation of protein binding / protein-folding chaperone binding / heart development / cellular response to hypoxia / negative regulation of neuron apoptotic process / tRNA binding / chromosome, telomeric region / nuclear speck / negative regulation of gene expression / RNA-directed RNA polymerase activity / nucleolus / protein homodimerization activity / DNA binding / RNA binding / nucleoplasm / metal ion binding / identical protein binding / nucleus / plasma membrane / cytosol 類似検索 - 分子機能
ジャーナル: Nat Struct Mol Biol / 年: 2013 タイトル: Structure of active dimeric human telomerase. 著者: Anselm Sauerwald / Sara Sandin / Gaël Cristofari / Sjors H W Scheres / Joachim Lingner / Daniela Rhodes / 要旨: Telomerase contains a large RNA subunit, TER, and a protein catalytic subunit, TERT. Whether telomerase functions as a monomer or dimer has been a matter of debate. Here we report biochemical and ...Telomerase contains a large RNA subunit, TER, and a protein catalytic subunit, TERT. Whether telomerase functions as a monomer or dimer has been a matter of debate. Here we report biochemical and labeling data that show that in vivo-assembled human telomerase contains two TERT subunits and binds two telomeric DNA substrates. Notably, catalytic activity requires both TERT active sites to be functional, which demonstrates that human telomerase functions as a dimer. We also present the three-dimensional structure of the active full-length human telomerase dimer, determined by single-particle EM in negative stain. Telomerase has a bilobal architecture with the two monomers linked by a flexible interface. The monomer reconstruction at 23-Å resolution and fitting of the atomic structure of the TERT subunit from beetle Tribolium castaneum into the EM density reveals the spatial relationship between RNA and protein subunits, providing insights into telomerase architecture.
#236 - 2019年8月 サイクリンとサイクリン依存性キナーゼ (Cyclin and Cyclin-dependent Kinase) 類似性 (1)
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マップ
ファイル
ダウンロード / ファイル: emd_2311.map.gz / 形式: CCP4 / 大きさ: 53.7 KB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
Three-dimensional structure of active, full-length human telomerase. Independently refined open monomer structure, determined by single-particle electron microscopy in negative stain
全体 : Three-dimensional structure of active, full-length human telomera...
全体
名称: Three-dimensional structure of active, full-length human telomerase dimer, determined by single-particle electron microscopy in negative stain
要素
試料: Three-dimensional structure of active, full-length human telomerase dimer, determined by single-particle electron microscopy in negative stain
タンパク質・ペプチド: Telomerase reverse transcriptase
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超分子 #1000: Three-dimensional structure of active, full-length human telomera...
超分子
名称: Three-dimensional structure of active, full-length human telomerase dimer, determined by single-particle electron microscopy in negative stain タイプ: sample / ID: 1000 詳細: Independently refined open monomer structure. The composition analysed by mass spectroscopy.Purified telomerase contains the hTERT subunits and two accessory proteins, Nop10 and dyskerin. ...詳細: Independently refined open monomer structure. The composition analysed by mass spectroscopy.Purified telomerase contains the hTERT subunits and two accessory proteins, Nop10 and dyskerin. Telomerase complexes have a molecular weight consistent with that of a dimer consisting of two hTERT (127 kDa) and two hTER (153 kDa) subunits, as well as the two accessory proteins Nop10 (7.7 kDa) and dyskerin (58 kDA). Number unique components: 1
タイプ: NEGATIVE 詳細: Continuous carbon-coated grids were freshly prepared and glow-discharged before use. 13 microl of telomerase sample (8-10 nM) were deposited on the grid for 15-30 minutes, blotted with filter ...詳細: Continuous carbon-coated grids were freshly prepared and glow-discharged before use. 13 microl of telomerase sample (8-10 nM) were deposited on the grid for 15-30 minutes, blotted with filter paper and negatively stained with 2 drops of 1-2% (w/v) uranyl acetate solution.
グリッド
詳細: 200 mesh carbon coated with thin carbon, glow discharged
凍結
凍結剤: NONE / 装置: OTHER
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電子顕微鏡法
顕微鏡
FEI TECNAI 12
アライメント法
Legacy - 非点収差: Corrected at 100,000 times magnification
詳細
The films were developed in Kodak developer at full strength for 12 min.
日付
2011年1月1日
撮影
カテゴリ: FILM / フィルム・検出器のモデル: KODAK SO-163 FILM / デジタル化 - スキャナー: ZEISS SCAI / デジタル化 - サンプリング間隔: 7 µm / 実像数: 482 / 平均電子線量: 10 e/Å2 / 詳細: The micrographs were compressed x4 / Od range: 1.4