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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: 6g4w | |||||||||||||||
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タイトル | Cryo-EM structure of a late human pre-40S ribosomal subunit - State A | |||||||||||||||
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![]() | RIBOSOME / 40S / pre-40S / ribosome biogenesis | |||||||||||||||
機能・相同性 | ![]() peptidyl-glutamine methylation / tRNA (m2G10) methyltransferase complex / rRNA (guanine-N7)-methylation / regulation of protein localization to nucleolus / tRNA methyltransferase activator activity / rRNA (guanine) methyltransferase activity / tRNA modification in the nucleus and cytosol / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Methylation / trophectodermal cell differentiation ...peptidyl-glutamine methylation / tRNA (m2G10) methyltransferase complex / rRNA (guanine-N7)-methylation / regulation of protein localization to nucleolus / tRNA methyltransferase activator activity / rRNA (guanine) methyltransferase activity / tRNA modification in the nucleus and cytosol / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Methylation / trophectodermal cell differentiation / protein methyltransferase activity / tRNA methylation / positive regulation of rRNA processing / positive regulation of respiratory burst involved in inflammatory response / nucleolus organization / rRNA methylation / negative regulation of RNA splicing / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / neural crest cell differentiation / U3 snoRNA binding / negative regulation of bicellular tight junction assembly / 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 / negative regulation of ubiquitin protein ligase activity / Ribosomal scanning and start codon recognition / Translation initiation complex formation / fibroblast growth factor binding / monocyte chemotaxis / Protein hydroxylation / TOR signaling / SARS-CoV-1 modulates host translation machinery / mTORC1-mediated signalling / cellular response to ethanol / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / Eukaryotic Translation Termination / ubiquitin ligase inhibitor activity / Response of EIF2AK4 (GCN2) to amino acid deficiency / positive regulation of signal transduction by p53 class mediator / SRP-dependent cotranslational protein targeting to membrane / negative regulation of ubiquitin-dependent protein catabolic process / Viral mRNA Translation / negative regulation of respiratory burst involved in inflammatory response / 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 / 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) / maturation of LSU-rRNA / Nuclear events stimulated by ALK signaling in cancer / ribosomal small subunit export from nucleus / rough endoplasmic reticulum / translation regulator activity / positive regulation of cell cycle / translation initiation factor binding / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / MDM2/MDM4 family protein binding / Mitotic Prometaphase / liver regeneration / EML4 and NUDC in mitotic spindle formation / cytosolic ribosome / stress granule assembly / transcription initiation-coupled chromatin remodeling / Resolution of Sister Chromatid Cohesion / 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 / positive regulation of translation / cellular response to leukemia inhibitory factor / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / innate immune response in mucosa / erythrocyte differentiation / stem cell proliferation / mRNA 3'-UTR binding / methyltransferase activity / maturation of SSU-rRNA / neural tube closure / small-subunit processome / translational initiation / modification-dependent protein catabolic process / RHO GTPases Activate Formins / protein tag activity / Regulation of expression of SLITs and ROBOs / response to insulin / GABA-ergic synapse / maintenance of translational fidelity / mRNA 5'-UTR binding / response to virus / cytoplasmic ribonucleoprotein granule / Separation of Sister Chromatids / apical part of cell / rRNA processing / antimicrobial humoral immune response mediated by antimicrobial peptide / osteoblast differentiation / antibacterial humoral response / glucose homeostasis 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: 4.5 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 | ![]() | 1.2 MB | 表示 | ![]() |
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PDB形式 | ![]() | 848.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 964.8 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1015.5 KB | 表示 | |
XML形式データ | ![]() | 128.4 KB | 表示 | |
CIF形式データ | ![]() | 232.5 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 | ![]() 4349MC ![]() 4337C ![]() 4348C ![]() 4350C ![]() 4351C ![]() 4352C ![]() 4353C ![]() 6g18C ![]() 6g4sC ![]() 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
-RNA鎖 , 1種, 1分子 2
#1: RNA鎖 | 分子量: 607057.688 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
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+40S ribosomal protein ... , 22種, 22分子 RbBcEeFHGZYXWTSQPONLJI
-タンパク質 , 6種, 6分子 xwusrq
#13: 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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#15: 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) ![]() |
#17: 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) ![]() |
#28: タンパク質 | 分子量: 68101.625 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
#29: タンパク質 | 分子量: 14215.359 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
#30: タンパク質 | 分子量: 31925.428 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() 参照: UniProt: O43709, 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 |
-タンパク質・ペプチド , 2種, 2分子 tk
#18: タンパク質・ペプチド | 分子量: 2054.328 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・ペプチド | 分子量: 1368.494 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
-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 late human pre-40S ribosomal subunit - State A タイプ: RIBOSOME / Entity ID: all / 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
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3次元再構成 | 解像度: 4.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 52414 / 対称性のタイプ: POINT |