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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 6g18 | |||||||||||||||
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タイトル | Cryo-EM structure of a late human pre-40S ribosomal subunit - State C | |||||||||||||||
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![]() | RIBOSOME / 40S / pre-40S / ribosome biogenesis | |||||||||||||||
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 / negative regulation of endoplasmic reticulum unfolded protein response / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / IRE1-RACK1-PP2A complex ...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 / negative regulation of endoplasmic reticulum unfolded protein response / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / IRE1-RACK1-PP2A complex / nucleolus organization / positive regulation of Golgi to plasma membrane protein transport / TNFR1-mediated ceramide production / negative regulation of RNA splicing / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / regulation of mitotic metaphase/anaphase transition / neural crest cell differentiation / positive regulation of ubiquitin-protein transferase activity / cysteine-type endopeptidase activator activity involved in apoptotic process / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / U3 snoRNA binding / negative regulation of bicellular tight junction assembly / regulation of establishment of cell polarity / negative regulation of phagocytosis / rRNA modification in the nucleus and cytosol / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / snoRNA binding / preribosome, small subunit precursor / laminin receptor activity / negative regulation of ubiquitin protein ligase activity / ion channel inhibitor activity / pigmentation / Ribosomal scanning and start codon recognition / Translation initiation complex formation / positive regulation of mitochondrial depolarization / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / monocyte chemotaxis / negative regulation of translational frameshifting / Protein hydroxylation / TOR signaling / BH3 domain binding / SARS-CoV-1 modulates host translation machinery / regulation of cell division / cellular response to ethanol / mTORC1-mediated signalling / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination / ubiquitin ligase inhibitor activity / positive regulation of GTPase activity / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / negative regulation of ubiquitin-dependent protein catabolic process / positive regulation of signal transduction by p53 class mediator / protein serine/threonine kinase inhibitor activity / Viral mRNA Translation / negative regulation of respiratory burst involved in inflammatory response / Maturation of protein E / Maturation of protein E / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / L13a-mediated translational silencing of Ceruloplasmin expression / 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 / Endosomal Sorting Complex Required For Transport (ESCRT) / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Negative regulation of FLT3 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Constitutive Signaling by NOTCH1 HD Domain Mutants / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / NOTCH2 Activation and Transmission of Signal to the Nucleus / Major pathway of rRNA processing in the nucleolus and cytosol / TICAM1,TRAF6-dependent induction of TAK1 complex / phagocytic cup / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / regulation of translational fidelity / Regulation of FZD by ubiquitination / Downregulation of ERBB4 signaling / p75NTR recruits signalling complexes / APC-Cdc20 mediated degradation of Nek2A / 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) / negative regulation of protein binding / InlA-mediated entry of Listeria monocytogenes into host cells / Regulation of pyruvate metabolism 類似検索 - 分子機能 | |||||||||||||||
生物種 | ![]() | |||||||||||||||
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: 3.6 Å | |||||||||||||||
![]() | Ameismeier, M. / Cheng, J. / Berninghausen, O. / Beckmann, R. | |||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Visualizing late states of human 40S ribosomal subunit maturation. 著者: Michael Ameismeier / Jingdong Cheng / Otto Berninghausen / Roland Beckmann / ![]() 要旨: The formation of eukaryotic ribosomal subunits extends from the nucleolus to the cytoplasm and entails hundreds of assembly factors. Despite differences in the pathways of ribosome formation, high- ...The formation of eukaryotic ribosomal subunits extends from the nucleolus to the cytoplasm and entails hundreds of assembly factors. Despite differences in the pathways of ribosome formation, high-resolution structural information has been available only from fungi. Here we present cryo-electron microscopy structures of late-stage human 40S assembly intermediates, representing one state reconstituted in vitro and five native states that range from nuclear to late cytoplasmic. The earliest particles reveal the position of the biogenesis factor RRP12 and distinct immature rRNA conformations that accompany the formation of the 40S subunit head. Molecular models of the late-acting assembly factors TSR1, RIOK1, RIOK2, ENP1, LTV1, PNO1 and NOB1 provide mechanistic details that underlie their contribution to a sequential 40S subunit assembly. The NOB1 architecture displays an inactive nuclease conformation that requires rearrangement of the PNO1-bound 3' rRNA, thereby coordinating the final rRNA folding steps with site 3 cleavage. | |||||||||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 2.1 MB | 表示 | ![]() |
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PDB形式 | ![]() | 1.6 MB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.3 MB | 表示 | |
XML形式データ | ![]() | 182.6 KB | 表示 | |
CIF形式データ | ![]() | 300 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 | ![]() 4337MC ![]() 4348C ![]() 4349C ![]() 4350C ![]() 4351C ![]() 4352C ![]() 4353C ![]() 6g4sC ![]() 6g4wC ![]() 6g51C ![]() 6g53C ![]() 6g5hC ![]() 6g5iC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ |
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リンク
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集合体
登録構造単位 | ![]()
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要素
+40S ribosomal protein ... , 26種, 26分子 FMPQRSTZcABCEGHIJLNOVWXYbe
-タンパク質 , 6種, 6分子 fguwvt
#11: タンパク質 | 分子量: 18004.041 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
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#12: タンパク質 | 分子量: 35115.652 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
#32: タンパク質 | 分子量: 91951.188 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
#33: タンパク質 | 分子量: 49673.258 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
#34: タンパク質 | 分子量: 63372.992 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() 参照: UniProt: Q9BVS4, non-specific serine/threonine protein kinase |
#35: タンパク質 | 分子量: 54935.891 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
-RNA-binding protein ... , 2種, 2分子 xy
#30: タンパク質 | 分子量: 27970.355 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
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#31: タンパク質 | 分子量: 46743.914 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
-RNA鎖 / 非ポリマー , 2種, 3分子 2

#1: RNA鎖 | 分子量: 604102.750 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
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#36: 化合物 |
-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 |
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試料調製
構成要素 | 名称: Cryo-EM structure of a human pre-40S ribosomal subunit with bound PNO1, NOB1, TSR1, BYST, RIOK2 and LTV1 タイプ: RIBOSOME 詳細: Cytoplasmic precursor of the human small ribosomal subunit (pre-40S) purified by affinity chromatography using the StFLAG-tagged ribosomal biogenesis factor PNO1 Entity ID: #1-#35 / 由来: NATURAL |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
緩衝液 | pH: 7.6 |
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 |
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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: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 2.5 e/Å2 フィルム・検出器のモデル: FEI FALCON II (4k x 4k) |
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解析
ソフトウェア | 名称: REFMAC / バージョン: 5.8.0158 / 分類: 精密化 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 287847 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
精密化 | 解像度: 3.6→260.16 Å / Cor.coef. Fo:Fc: 0.919 / ESU R: 0.622 立体化学のターゲット値: MAXIMUM LIKELIHOOD WITH PHASES 詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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溶媒の処理 | イオンプローブ半径: 0.8 Å / 減衰半径: 0.8 Å / VDWプローブ半径: 1.2 Å / 溶媒モデル: MASK | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 104.814 Å2
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精密化ステップ | サイクル: 1 / 合計: 83825 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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