+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6zqa | ||||||
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タイトル | Cryo-EM structure of the 90S pre-ribosome from Saccharomyces cerevisiae, state A (Poly-Ala) | ||||||
要素 |
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キーワード | RIBOSOME / 90S pre-ribosome / 40S pre-ribosome / A1 cleavage / Dhr1 | ||||||
機能・相同性 | 機能・相同性情報 Noc4p-Nop14p complex / regulation of ribosomal protein gene transcription by RNA polymerase II / t-UTP complex / rRNA small subunit pseudouridine methyltransferase Nep1 / RNA fragment catabolic process / CURI complex / UTP-C complex / rRNA 2'-O-methylation / Pwp2p-containing subcomplex of 90S preribosome / histone H2AQ104 methyltransferase activity ...Noc4p-Nop14p complex / regulation of ribosomal protein gene transcription by RNA polymerase II / t-UTP complex / rRNA small subunit pseudouridine methyltransferase Nep1 / RNA fragment catabolic process / CURI complex / UTP-C complex / rRNA 2'-O-methylation / Pwp2p-containing subcomplex of 90S preribosome / histone H2AQ104 methyltransferase activity / nuclear microtubule / Mpp10 complex / snoRNA guided rRNA 2'-O-methylation / rRNA (pseudouridine) methyltransferase activity / rRNA modification / regulation of rRNA processing / endonucleolytic cleavage in 5'-ETS of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / septum digestion after cytokinesis / tRNA re-export from nucleus / snRNA binding / box C/D sno(s)RNA 3'-end processing / regulation of transcription by RNA polymerase I / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / rRNA methyltransferase activity / rDNA heterochromatin / positive regulation of rRNA processing / single-stranded telomeric DNA binding / box C/D methylation guide snoRNP complex / tRNA export from nucleus / U4/U6 snRNP / rRNA base methylation / Negative regulators of DDX58/IFIH1 signaling / rRNA primary transcript binding / SUMOylation of RNA binding proteins / sno(s)RNA-containing ribonucleoprotein complex / protein localization to nucleolus / U4 snRNA binding / O-methyltransferase activity / Protein hydroxylation / rRNA methylation / U3 snoRNA binding / U4 snRNP / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / poly(A)+ mRNA export from nucleus / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / preribosome, small subunit precursor / Ribosomal scanning and start codon recognition / snoRNA binding / precatalytic spliceosome / establishment of cell polarity / positive regulation of transcription by RNA polymerase I / Major pathway of rRNA processing in the nucleolus and cytosol / nucleolar large rRNA transcription by RNA polymerase I / spliceosomal complex assembly / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Formation of a pool of free 40S subunits / L13a-mediated translational silencing of Ceruloplasmin expression / proteasome assembly / 90S preribosome / regulation of translational fidelity / Ub-specific processing proteases / ribosomal subunit export from nucleus / ribosomal small subunit export from nucleus / RNA processing / 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) / U4/U6 x U5 tri-snRNP complex / enzyme activator activity / RNA endonuclease activity / ribosome assembly / nuclear periphery / 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 / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / small-subunit processome / translational initiation / spliceosomal complex / maintenance of translational fidelity / mRNA splicing, via spliceosome / rRNA processing / ribosomal small subunit biogenesis / unfolded protein binding / small ribosomal subunit rRNA binding / peroxisome / ribosome biogenesis / ribosomal small subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / cytoplasmic translation / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation / GTPase activity / mRNA binding 類似検索 - 分子機能 | ||||||
生物種 | Saccharomyces cerevisiae (パン酵母) Saccharomyces cerevisiae S288C (パン酵母) | ||||||
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: 4.4 Å | ||||||
データ登録者 | Cheng, J. / Lau, B. / Venuta, G.L. / Berninghausen, O. / Hurt, E. / Beckmann, R. | ||||||
引用 | ジャーナル: Science / 年: 2020 タイトル: 90 pre-ribosome transformation into the primordial 40 subunit. 著者: Jingdong Cheng / Benjamin Lau / Giuseppe La Venuta / Michael Ameismeier / Otto Berninghausen / Ed Hurt / Roland Beckmann / 要旨: Production of small ribosomal subunits initially requires the formation of a 90 precursor followed by an enigmatic process of restructuring into the primordial pre-40 subunit. We elucidate this ...Production of small ribosomal subunits initially requires the formation of a 90 precursor followed by an enigmatic process of restructuring into the primordial pre-40 subunit. We elucidate this process by biochemical and cryo-electron microscopy analysis of intermediates along this pathway in yeast. First, the remodeling RNA helicase Dhr1 engages the 90 pre-ribosome, followed by Utp24 endonuclease-driven RNA cleavage at site A, thereby separating the 5'-external transcribed spacer (ETS) from 18 ribosomal RNA. Next, the 5'-ETS and 90 assembly factors become dislodged, but this occurs sequentially, not en bloc. Eventually, the primordial pre-40 emerges, still retaining some 90 factors including Dhr1, now ready to unwind the final small nucleolar U3-18 RNA hybrid. Our data shed light on the elusive 90 to pre-40 transition and clarify the principles of assembly and remodeling of large ribonucleoproteins. | ||||||
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 | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6zqa.cif.gz | 3.5 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6zqa.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 6zqa.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 6zqa_validation.pdf.gz | 1.5 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6zqa_full_validation.pdf.gz | 1.6 MB | 表示 | |
XML形式データ | 6zqa_validation.xml.gz | 383.1 KB | 表示 | |
CIF形式データ | 6zqa_validation.cif.gz | 683.7 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/zq/6zqa ftp://data.pdbj.org/pub/pdb/validation_reports/zq/6zqa | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
+タンパク質 , 15種, 18分子 UAUCUPUQCACBCFCGCMJFJGJHJJJNJOJPJQDF
+Nucleolar complex protein ... , 2種, 2分子 UBUS
+U3 small nucleolar RNA-associated protein ... , 16種, 16分子 UDUEUFUGUHUIUJUKULUMUNUOURUUUVCK
+RRNA-processing protein ... , 2種, 2分子 UXJM
+Ribosome biogenesis protein ... , 2種, 2分子 UZCL
+Nucleolar protein ... , 2種, 2分子 CDCE
+Ribosomal RNA-processing protein ... , 2種, 2分子 CHCN
+U3 small nucleolar ribonucleoprotein protein ... , 2種, 2分子 CICJ
+40S ribosomal protein ... , 11種, 11分子 DADHDJDNDODQDSDWDXDbDc
+RNA鎖 , 3種, 3分子 D2D3D4
+非ポリマー , 3種, 5分子
+詳細
-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 |
-試料調製
構成要素 | 名称: 90S pre-ribbosome state A / タイプ: RIBOSOME / Entity ID: #1-#57 / 由来: NATURAL |
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分子量 | 実験値: NO |
由来(天然) | 生物種: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (パン酵母) |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのタイプ: Quantifoil |
急速凍結 | 凍結剤: ETHANE |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM | ||||||||||||
電子レンズ | モード: BRIGHT FIELD | ||||||||||||
撮影 |
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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: 4.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 11194 / 対称性のタイプ: POINT |