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基本情報
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タイトル | Cryo-EM structure of a human pre-40S ribosomal subunit - State RRP12-B3 | |||||||||
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![]() | ribosome biogenesis / 40S ribosome / RIBOSOME | |||||||||
機能・相同性 | ![]() positive regulation of ribosomal small subunit export from nucleus / regulation of protein localization to nucleolus / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / trophectodermal cell differentiation / positive regulation of rRNA processing / positive regulation of respiratory burst involved in inflammatory response / nucleolus organization / : / negative regulation of RNA splicing / neural crest cell differentiation ...positive regulation of ribosomal small subunit export from nucleus / regulation of protein localization to nucleolus / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / trophectodermal cell differentiation / positive regulation of rRNA processing / positive regulation of respiratory burst involved in inflammatory response / nucleolus organization / : / negative regulation of RNA splicing / neural crest cell differentiation / regulation of mitotic metaphase/anaphase transition / positive regulation of ubiquitin-protein transferase activity / Formation of the ternary complex, and subsequently, the 43S complex / rRNA modification in the nucleus and cytosol / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / U3 snoRNA binding / Translation initiation complex formation / Ribosomal scanning and start codon recognition / negative regulation of ubiquitin protein ligase activity / preribosome, small subunit precursor / mammalian oogenesis stage / snoRNA binding / activation-induced cell death of T cells / fibroblast growth factor binding / Protein hydroxylation / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Peptide chain elongation / monocyte chemotaxis / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / ubiquitin ligase inhibitor activity / Formation of a pool of free 40S subunits / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / negative regulation of respiratory burst involved in inflammatory response / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Viral mRNA Translation / L13a-mediated translational silencing of Ceruloplasmin expression / GTP hydrolysis and joining of the 60S ribosomal subunit / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / TOR signaling / T cell proliferation involved in immune response / Major pathway of rRNA processing in the nucleolus and cytosol / regulation of translational fidelity / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / ribosomal small subunit export from nucleus / erythrocyte development / translation regulator activity / Protein methylation / Nuclear events stimulated by ALK signaling in cancer / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / cytosolic ribosome / positive regulation of cell cycle / stress granule assembly / Mitotic Prometaphase / laminin binding / 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) / EML4 and NUDC in mitotic spindle formation / Maturation of protein E / Maturation of protein E / gastrulation / ER Quality Control Compartment (ERQC) / MDM2/MDM4 family protein binding / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Membrane binding and targetting of GAG proteins / translation initiation factor binding / Endosomal Sorting Complex Required For Transport (ESCRT) / Resolution of Sister Chromatid Cohesion / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Negative regulation of FLT3 / Constitutive Signaling by NOTCH1 HD Domain Mutants / Regulation of FZD by ubiquitination / TICAM1,TRAF6-dependent induction of TAK1 complex / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1-dependent activation of IRF3/IRF7 / RNA endonuclease activity / translational initiation / APC/C:Cdc20 mediated degradation of Cyclin B / p75NTR recruits signalling complexes / Downregulation of ERBB4 signaling / APC-Cdc20 mediated degradation of Nek2A / PINK1-PRKN Mediated Mitophagy / TRAF6-mediated induction of TAK1 complex within TLR4 complex / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / Pexophagy / visual perception 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.3 Å | |||||||||
![]() | Cheng J / Lau B / Thoms M / Ameismeier M / Berninghausen O / Hurt E / Beckmann R | |||||||||
資金援助 | 1件
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![]() | ![]() タイトル: The nucleoplasmic phase of pre-40S formation prior to nuclear export. 著者: Jingdong Cheng / Benjamin Lau / Matthias Thoms / Michael Ameismeier / Otto Berninghausen / Ed Hurt / Roland Beckmann / ![]() ![]() 要旨: Biogenesis of the small ribosomal subunit in eukaryotes starts in the nucleolus with the formation of a 90S precursor and ends in the cytoplasm. Here, we elucidate the enigmatic structural ...Biogenesis of the small ribosomal subunit in eukaryotes starts in the nucleolus with the formation of a 90S precursor and ends in the cytoplasm. Here, we elucidate the enigmatic structural transitions of assembly intermediates from human and yeast cells during the nucleoplasmic maturation phase. After dissociation of all 90S factors, the 40S body adopts a close-to-mature conformation, whereas the 3' major domain, later forming the 40S head, remains entirely immature. A first coordination is facilitated by the assembly factors TSR1 and BUD23-TRMT112, followed by re-positioning of RRP12 that is already recruited early to the 90S for further head rearrangements. Eventually, the uS2 cluster, CK1 (Hrr25 in yeast) and the export factor SLX9 associate with the pre-40S to provide export competence. These exemplary findings reveal the evolutionary conserved mechanism of how yeast and humans assemble the 40S ribosomal subunit, but reveal also a few minor differences. | |||||||||
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 105.5 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 51.9 KB 51.9 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 12.8 KB | 表示 | ![]() |
画像 | ![]() | 141.9 KB | ||
Filedesc metadata | ![]() | 12.7 KB | ||
その他 | ![]() ![]() | 108.4 MB 108.3 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 479.6 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 479.2 KB | 表示 | |
XML形式データ | ![]() | 13.2 KB | 表示 | |
CIF形式データ | ![]() | 17.8 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 7wu0MC ![]() 7wtnC ![]() 7wtoC ![]() 7wtpC ![]() 7wtqC ![]() 7wtrC ![]() 7wtsC ![]() 7wttC ![]() 7wtuC ![]() 7wtvC ![]() 7wtwC ![]() 7wtxC ![]() 7wtzC M: このマップから作成された原子モデル C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||
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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:
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-添付データ
-追加マップ: #2
ファイル | emd_32807_additional_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-追加マップ: #1
ファイル | emd_32807_additional_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
+全体 : Yeast pre-40S ribosomal subunit
+超分子 #1: Yeast pre-40S ribosomal subunit
+分子 #1: 18S rRNA
+分子 #2: 40S ribosomal protein S5
+分子 #3: 40S ribosomal protein S12
+分子 #4: 40S ribosomal protein S15
+分子 #5: 40S ribosomal protein S16
+分子 #6: 40S ribosomal protein S17
+分子 #7: 40S ribosomal protein S18
+分子 #8: 40S ribosomal protein S19
+分子 #9: 40S ribosomal protein S25
+分子 #10: 40S ribosomal protein S28
+分子 #11: Ubiquitin-40S ribosomal protein S27a
+分子 #12: 40S ribosomal protein SA
+分子 #13: 40S ribosomal protein S3a
+分子 #14: 40S ribosomal protein S2
+分子 #15: 40S ribosomal protein S4, X isoform
+分子 #16: 40S ribosomal protein S6
+分子 #17: 40S ribosomal protein S7
+分子 #18: 40S ribosomal protein S8
+分子 #19: 40S ribosomal protein S9
+分子 #20: 40S ribosomal protein S11
+分子 #21: 40S ribosomal protein S13
+分子 #22: 40S ribosomal protein S14
+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 S27
+分子 #28: 40S ribosomal protein S30
+分子 #29: RNA-binding protein PNO1
+分子 #30: RNA-binding protein NOB1
+分子 #31: Pre-rRNA-processing protein TSR1 homolog
+分子 #32: Bystin
+分子 #33: Protein LTV1 homolog
+分子 #34: RRP12-like protein
+分子 #35: Serine/threonine-protein kinase RIO2
+分子 #36: ZINC ION
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.4 |
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凍結 | 凍結剤: ETHANE |
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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) 検出モード: COUNTING / 平均電子線量: 44.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.5 µm / 最小 デフォーカス(公称値): 0.8 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |