+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7trd | ||||||||||||
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タイトル | Human telomerase catalytic core structure at 3.3 Angstrom | ||||||||||||
要素 |
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キーワード | REPLICATION / DNA / RNA | ||||||||||||
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 / telomerase catalytic core complex / positive regulation of protein localization to nucleolus / siRNA transcription / telomerase activity ...positive regulation of hair cycle / template-free RNA nucleotidyltransferase / positive regulation of transdifferentiation / TERT-RMRP complex / DNA strand elongation / RNA-directed RNA polymerase complex / telomerase catalytic core complex / positive regulation of protein localization to nucleolus / siRNA transcription / telomerase activity / Regulation of MITF-M-dependent genes involved in DNA damage repair and senescence / : / RNA-templated DNA biosynthetic process / establishment of protein localization to telomere / nuclear telomere cap complex / siRNA processing / telomerase RNA binding / telomerase holoenzyme complex / positive regulation of vascular associated smooth muscle cell migration / DNA biosynthetic process / telomeric DNA binding / RNA-templated transcription / positive regulation of stem cell proliferation / mitochondrial nucleoid / negative regulation of cellular senescence / positive regulation of Wnt signaling pathway / telomere maintenance via telomerase / Telomere Extension By Telomerase / replicative senescence / negative regulation of extrinsic apoptotic signaling pathway in absence of ligand / positive regulation of G1/S transition of mitotic cell cycle / 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 / mitochondrion organization / positive regulation of D-glucose import / Formation of the beta-catenin:TCF transactivating complex / regulation of protein stability / PML body / transcription coactivator binding / positive regulation of miRNA transcription / RNA-directed DNA polymerase / positive regulation of angiogenesis / RNA-directed DNA polymerase activity / positive regulation of protein binding / protein-folding chaperone binding / cellular response to hypoxia / negative regulation of neuron apoptotic process / tRNA binding / chromosome, telomeric region / nuclear speck / negative regulation of gene expression / RNA-dependent RNA polymerase activity / nucleolus / protein homodimerization activity / DNA binding / RNA binding / nucleoplasm / identical protein binding / nucleus / metal ion binding / plasma membrane / cytosol 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: 3.3 Å | ||||||||||||
データ登録者 | Liu, B. / He, Y. / Wang, Y. / Song, H. / Zhou, Z.H. / Feigon, J. | ||||||||||||
資金援助 | 米国, 3件
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引用 | ジャーナル: Nature / 年: 2022 タイトル: Structure of active human telomerase with telomere shelterin protein TPP1. 著者: Baocheng Liu / Yao He / Yaqiang Wang / He Song / Z Hong Zhou / Juli Feigon / 要旨: Human telomerase is a RNA-protein complex that extends the 3' end of linear chromosomes by synthesizing multiple copies of the telomeric repeat TTAGGG. Its activity is a determinant of cancer ...Human telomerase is a RNA-protein complex that extends the 3' end of linear chromosomes by synthesizing multiple copies of the telomeric repeat TTAGGG. Its activity is a determinant of cancer progression, stem cell renewal and cellular aging. Telomerase is recruited to telomeres and activated for telomere repeat synthesis by the telomere shelterin protein TPP1. Human telomerase has a bilobal structure with a catalytic core ribonuclear protein and a H and ACA box ribonuclear protein. Here we report cryo-electron microscopy structures of human telomerase catalytic core of telomerase reverse transcriptase (TERT) and telomerase RNA (TER (also known as hTR)), and of telomerase with the shelterin protein TPP1. TPP1 forms a structured interface with the TERT-unique telomerase essential N-terminal domain (TEN) and the telomerase RAP motif (TRAP) that are unique to TERT, and conformational dynamics of TEN-TRAP are damped upon TPP1 binding, defining the requirements for recruitment and activation. The structures further reveal that the elements of TERT and TER that are involved in template and telomeric DNA handling-including the TEN domain and the TRAP-thumb helix channel-are largely structurally homologous to those in Tetrahymena telomerase, and provide unique insights into the mechanism of telomerase activity. The binding site of the telomerase inhibitor BIBR1532 overlaps a critical interaction between the TER pseudoknot and the TERT thumb domain. Numerous mutations leading to telomeropathies are located at the TERT-TER and TEN-TRAP-TPP1 interfaces, highlighting the importance of TER-TERT and TPP1 interactions for telomerase activity, recruitment and as drug targets. | ||||||||||||
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 | 7trd.cif.gz | 294.2 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7trd.ent.gz | 219.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7trd.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 | 7trd_validation.pdf.gz | 933.6 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7trd_full_validation.pdf.gz | 949 KB | 表示 | |
XML形式データ | 7trd_validation.xml.gz | 33.8 KB | 表示 | |
CIF形式データ | 7trd_validation.cif.gz | 53.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/tr/7trd ftp://data.pdbj.org/pub/pdb/validation_reports/tr/7trd | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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-要素
#1: RNA鎖 | 分子量: 145477.797 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: Homo sapiens (ヒト) / 参照: GenBank: 1932797 |
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#2: タンパク質 | 分子量: 130711.492 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: TERT, EST2, TCS1, TRT / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: O14746, RNA-directed DNA polymerase |
#3: DNA鎖 | 分子量: 5514.567 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) |
-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 telomerase catalytic core with DNA-substrate / タイプ: COMPLEX / Entity ID: all / 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: 8 |
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 |
-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: SPOT SCAN |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 4000 nm / 最小 デフォーカス(公称値): 800 nm |
撮影 | 電子線照射量: 55 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: 1.18.2_3874: / 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: 3.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 291504 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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