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万見- EMDB-11520: Cryo-EM structure of a late human pre-40S ribosomal subunit - State H1 -
+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-11520 | |||||||||
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タイトル | Cryo-EM structure of a late human pre-40S ribosomal subunit - State H1 | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | Ribosome Biogenesis / Pre-40S / RIBOSOME | |||||||||
機能・相同性 | 機能・相同性情報 methyltransferase complex / phenylalanine-tRNA ligase activity / phenylalanyl-tRNA aminoacylation / 加水分解酵素; 酸無水物に作用; 酸無水物に作用・物質の膜輸送を触媒する / positive regulation of rRNA processing / : / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair ...methyltransferase complex / phenylalanine-tRNA ligase activity / phenylalanyl-tRNA aminoacylation / 加水分解酵素; 酸無水物に作用; 酸無水物に作用・物質の膜輸送を触媒する / positive regulation of rRNA processing / : / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / protein tyrosine kinase inhibitor activity / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / nucleolus organization / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / IRE1-RACK1-PP2A complex / positive regulation of endodeoxyribonuclease activity / positive regulation of Golgi to plasma membrane protein transport / TNFR1-mediated ceramide production / negative regulation of RNA splicing / negative regulation of DNA repair / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / supercoiled DNA binding / oxidized purine DNA binding / neural crest cell differentiation / NF-kappaB complex / ubiquitin-like protein conjugating enzyme binding / regulation of establishment of cell polarity / positive regulation of ubiquitin-protein transferase activity / negative regulation of phagocytosis / rRNA modification in the nucleus and cytosol / erythrocyte homeostasis / Formation of the ternary complex, and subsequently, the 43S complex / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / preribosome, small subunit precursor / pigmentation / protein kinase A binding / negative regulation of ubiquitin protein ligase activity / Ribosomal scanning and start codon recognition / ion channel inhibitor activity / Translation initiation complex formation / mammalian oogenesis stage / fibroblast growth factor binding / positive regulation of mitochondrial depolarization / activation-induced cell death of T cells / positive regulation of T cell receptor signaling pathway / negative regulation of peptidyl-serine phosphorylation / iron-sulfur cluster binding / negative regulation of Wnt signaling pathway / positive regulation of activated T cell proliferation / monocyte chemotaxis / Protein hydroxylation / regulation of cell division / BH3 domain binding / cysteine-type endopeptidase activator activity involved in apoptotic process / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / Peptide chain elongation / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / Formation of a pool of free 40S subunits / ubiquitin ligase inhibitor activity / Eukaryotic Translation Termination / phagocytic cup / negative regulation of respiratory burst involved in inflammatory response / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / Viral mRNA Translation / negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / TOR signaling / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / T cell proliferation involved in immune response / regulation of translational fidelity / spindle assembly / positive regulation of cell cycle / Major pathway of rRNA processing in the nucleolus and cytosol / erythrocyte development / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / negative regulation of ubiquitin-dependent protein catabolic process / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Protein methylation / positive regulation of intrinsic apoptotic signaling pathway / ribosomal small subunit export from nucleus / Nuclear events stimulated by ALK signaling in cancer / translation regulator activity / signaling adaptor activity / laminin binding / negative regulation of smoothened signaling pathway / stress granule assembly / Mitotic Prometaphase / rough endoplasmic reticulum / endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / antiviral innate immune response / positive regulation of JUN kinase activity 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.6 Å | |||||||||
データ登録者 | Ameismeier M / Zemp I | |||||||||
資金援助 | ドイツ, 1件
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引用 | ジャーナル: Nature / 年: 2020 タイトル: Structural basis for the final steps of human 40S ribosome maturation. 著者: Michael Ameismeier / Ivo Zemp / Jasmin van den Heuvel / Matthias Thoms / Otto Berninghausen / Ulrike Kutay / Roland Beckmann / 要旨: Eukaryotic ribosomes consist of a small 40S and a large 60S subunit that are assembled in a highly coordinated manner. More than 200 factors ensure correct modification, processing and folding of ...Eukaryotic ribosomes consist of a small 40S and a large 60S subunit that are assembled in a highly coordinated manner. More than 200 factors ensure correct modification, processing and folding of ribosomal RNA and the timely incorporation of ribosomal proteins. Small subunit maturation ends in the cytosol, when the final rRNA precursor, 18S-E, is cleaved at site 3 by the endonuclease NOB1. Previous structures of human 40S precursors have shown that NOB1 is kept in an inactive state by its partner PNO1. The final maturation events, including the activation of NOB1 for the decisive rRNA-cleavage step and the mechanisms driving the dissociation of the last biogenesis factors have, however, remained unresolved. Here we report five cryo-electron microscopy structures of human 40S subunit precursors, which describe the compositional and conformational progression during the final steps of 40S assembly. Our structures explain the central role of RIOK1 in the displacement and dissociation of PNO1, which in turn allows conformational changes and activation of the endonuclease NOB1. In addition, we observe two factors, eukaryotic translation initiation factor 1A domain-containing protein (EIF1AD) and leucine-rich repeat-containing protein 47 (LRRC47), which bind to late pre-40S particles near RIOK1 and the central rRNA helix 44. Finally, functional data shows that EIF1AD is required for efficient assembly factor recycling and 18S-E processing. Our results thus enable a detailed understanding of the last steps in 40S formation in human cells and, in addition, provide evidence for principal differences in small ribosomal subunit formation between humans and the model organism Saccharomyces cerevisiae. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_11520.map.gz | 105.1 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-11520-v30.xml emd-11520.xml | 55.3 KB 55.3 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_11520_fsc.xml | 12.7 KB | 表示 | FSCデータファイル |
画像 | emd_11520.png | 171.2 KB | ||
マスクデータ | emd_11520_msk_1.map | 178 MB | マスクマップ | |
Filedesc metadata | emd-11520.cif.gz | 12.3 KB | ||
その他 | emd_11520_additional_1.map.gz emd_11520_half_map_1.map.gz emd_11520_half_map_2.map.gz | 166.8 MB 140.8 MB 140.8 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-11520 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-11520 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_11520_validation.pdf.gz | 415 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_11520_full_validation.pdf.gz | 414.1 KB | 表示 | |
XML形式データ | emd_11520_validation.xml.gz | 18.6 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11520 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11520 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_11520.map.gz / 形式: CCP4 / 大きさ: 178 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.059 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-マスク #1
ファイル | emd_11520_msk_1.map | ||||||||||||
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密度ヒストグラム |
-追加マップ: postprocessed
ファイル | emd_11520_additional_1.map | ||||||||||||
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注釈 | postprocessed | ||||||||||||
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密度ヒストグラム |
-ハーフマップ: #2
ファイル | emd_11520_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_11520_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
+全体 : Cryo-EM structure of a late human pre-40S ribosomal subunit - State H1
+超分子 #1: Cryo-EM structure of a late human pre-40S ribosomal subunit - State H1
+分子 #1: pre-18S ribosomal RNA
+分子 #2: 40S ribosomal protein SA
+分子 #3: 40S ribosomal protein S3a
+分子 #4: 40S ribosomal protein S2
+分子 #5: 40S ribosomal protein S26
+分子 #6: 40S ribosomal protein S4, X isoform
+分子 #7: 40S ribosomal protein S3
+分子 #8: 40S ribosomal protein S6
+分子 #9: 40S ribosomal protein S7
+分子 #10: 40S ribosomal protein S8
+分子 #11: 40S ribosomal protein S9
+分子 #12: 40S ribosomal protein S5
+分子 #13: 40S ribosomal protein S11
+分子 #14: 40S ribosomal protein S10
+分子 #15: 40S ribosomal protein S13
+分子 #16: 40S ribosomal protein S14
+分子 #17: 40S ribosomal protein S12
+分子 #18: 40S ribosomal protein S15
+分子 #19: 40S ribosomal protein S17
+分子 #20: 40S ribosomal protein S16
+分子 #21: 40S ribosomal protein S18
+分子 #22: 40S ribosomal protein S19
+分子 #23: 40S ribosomal protein S21
+分子 #24: 40S ribosomal protein S15a
+分子 #25: 40S ribosomal protein S23
+分子 #26: 40S ribosomal protein S24
+分子 #27: 40S ribosomal protein S20
+分子 #28: 40S ribosomal protein S25
+分子 #29: 40S ribosomal protein S27
+分子 #30: 40S ribosomal protein S28
+分子 #31: 40S ribosomal protein S29
+分子 #32: 40S ribosomal protein S30
+分子 #33: Ubiquitin-40S ribosomal protein S27a
+分子 #34: Receptor of activated protein C kinase 1
+分子 #35: Probable RNA-binding protein EIF1AD
+分子 #36: Leucine-rich repeat-containing protein 47
+分子 #37: Serine/threonine-protein kinase RIO1
+分子 #38: MAGNESIUM ION
+分子 #39: ZINC ION
+分子 #40: ASPARTIC ACID
+分子 #41: ADENOSINE-5'-TRIPHOSPHATE
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.6 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 48.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |