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データを開く
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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 UTP14 | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | ribosome biogenesis / 40S ribosome / RIBOSOME | |||||||||
| 機能・相同性 | 機能・相同性情報peptidyl-glutamine methylation / tRNA (m2G10) methyltransferase complex / tRNA methyltransferase activator activity / 18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase / rRNA (guanine-N7)-methylation / 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase activity / rRNA (guanine) methyltransferase activity / rRNA (adenine-N6,N6-)-dimethyltransferase activity / tRNA modification in the nucleus and cytosol / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) ...peptidyl-glutamine methylation / tRNA (m2G10) methyltransferase complex / tRNA methyltransferase activator activity / 18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase / rRNA (guanine-N7)-methylation / 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase activity / rRNA (guanine) methyltransferase activity / rRNA (adenine-N6,N6-)-dimethyltransferase activity / tRNA modification in the nucleus and cytosol / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Methylation / protein methyltransferase activity / tRNA methylation / positive regulation of rRNA processing / rRNA methylation / negative regulation of RNA splicing / U3 snoRNA binding / neural crest cell differentiation / preribosome, small subunit precursor / rRNA modification in the nucleus and cytosol / negative regulation of bicellular tight junction assembly / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / Ribosomal scanning and start codon recognition / Translation initiation complex formation / Protein hydroxylation / SARS-CoV-1 modulates host translation machinery / TOR signaling / mTORC1-mediated signalling / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / cellular response to ethanol / Eukaryotic Translation Termination / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / Viral mRNA Translation / 90S preribosome / ubiquitin ligase inhibitor activity / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / negative regulation of ubiquitin-dependent protein catabolic process / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / maturation of LSU-rRNA / Nuclear events stimulated by ALK signaling in cancer / rough endoplasmic reticulum / positive regulation of cell cycle / translation initiation factor binding / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / cytosolic ribosome / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / 転移酵素; 一炭素原子の基を移すもの; メチル基を移すもの / transcription initiation-coupled chromatin remodeling / Resolution of Sister Chromatid Cohesion / stress granule assembly / methyltransferase activity / erythrocyte differentiation / positive regulation of translation / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / innate immune response in mucosa / maturation of SSU-rRNA / mRNA 3'-UTR binding / neural tube closure / small-subunit processome / translational initiation / RHO GTPases Activate Formins / response to insulin / maintenance of translational fidelity / modification-dependent protein catabolic process / GABA-ergic synapse / mRNA 5'-UTR binding / response to virus / Regulation of expression of SLITs and ROBOs / protein tag activity / cytoplasmic ribonucleoprotein granule / rRNA processing / Separation of Sister Chromatids / antimicrobial humoral immune response mediated by antimicrobial peptide / glucose homeostasis / antibacterial humoral response / ribosomal small subunit assembly / chromatin organization / presynapse / ribosomal small subunit biogenesis / cell body / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / nuclear membrane / SARS-CoV-2 modulates host translation machinery / cytoplasmic translation / cell differentiation / postsynaptic density / rRNA binding / defense response to Gram-positive bacterium / structural constituent of ribosome 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: 3.2 Å | |||||||||
データ登録者 | Cheng J / Lau B / Thoms M / Ameismeier M / Berninghausen O / Hurt E / Beckmann R | |||||||||
| 資金援助 | 1件
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引用 | ジャーナル: Nucleic Acids Res / 年: 2022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 | emd_32799.map.gz | 105.6 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-32799-v30.xml emd-32799.xml | 35.4 KB 35.4 KB | 表示 表示 | EMDBヘッダ |
| FSC (解像度算出) | emd_32799_fsc.xml | 12.8 KB | 表示 | FSCデータファイル |
| 画像 | emd_32799.png | 131.2 KB | ||
| Filedesc metadata | emd-32799.cif.gz | 10.7 KB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-32799 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-32799 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 7wtsMC ![]() 7wtnC ![]() 7wtoC ![]() 7wtpC ![]() 7wtqC ![]() 7wtrC ![]() 7wttC ![]() 7wtuC ![]() 7wtvC ![]() 7wtwC ![]() 7wtxC ![]() 7wtzC ![]() 7wu0C 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 F&H 検索 |
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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 |
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マップ
| ファイル | ダウンロード / ファイル: emd_32799.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:
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-添付データ
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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 S27
+分子 #3: 40S ribosomal protein S3a
+分子 #4: 40S ribosomal protein S4, X isoform
+分子 #5: 40S ribosomal protein S30
+分子 #6: 40S ribosomal protein S7
+分子 #7: 40S ribosomal protein S6
+分子 #8: 40S ribosomal protein S24
+分子 #9: RNA-binding protein PNO1
+分子 #10: 40S ribosomal protein S23
+分子 #11: 40S ribosomal protein S15a
+分子 #12: Pre-rRNA-processing protein TSR1 homolog
+分子 #13: 40S ribosomal protein S14
+分子 #14: 40S ribosomal protein S13
+分子 #15: 40S ribosomal protein S11
+分子 #16: 40S ribosomal protein S9
+分子 #17: 40S ribosomal protein S8
+分子 #18: Multifunctional methyltransferase subunit TRM112-like protein
+分子 #19: Probable 18S rRNA (guanine-N(7))-methyltransferase
+分子 #20: RRP12-like protein
+分子 #21: Ribosome biogenesis protein SLX9 homolog
+分子 #22: U3 small nucleolar RNA-associated protein 14 homolog A
+分子 #23: Probable dimethyladenosine transferase
-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 |
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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: FIELD EMISSION GUN |
| 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 |
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コントローラー
万見について




キーワード
Homo sapiens (ヒト)
データ登録者
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Y (Row.)
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解析
FIELD EMISSION GUN

