+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6zqd | ||||||
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タイトル | Cryo-EM structure of the 90S pre-ribosome from Saccharomyces cerevisiae, state Post-A1 | ||||||
要素 |
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キーワード | RIBOSOME (リボソーム) / 90S pre-ribosome / 40S pre-ribosome / A1 cleavage / Dhr1 | ||||||
機能・相同性 | 機能・相同性情報 18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase / 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase activity / Noc4p-Nop14p complex / box H/ACA snoRNA binding / regulation of ribosomal protein gene transcription by RNA polymerase II / rRNA small subunit pseudouridine methyltransferase Nep1 / t-UTP complex / RNA fragment catabolic process / CURI complex / UTP-C complex ...18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase / 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase activity / Noc4p-Nop14p complex / box H/ACA snoRNA binding / regulation of ribosomal protein gene transcription by RNA polymerase II / rRNA small subunit pseudouridine methyltransferase Nep1 / t-UTP complex / RNA fragment catabolic process / CURI complex / UTP-C complex / rRNA 2'-O-methylation / Pwp2p-containing subcomplex of 90S preribosome / endonucleolytic cleavage in ITS1 upstream of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / box C/D sno(s)RNA binding / histone H2AQ104 methyltransferase activity / nuclear microtubule / Mpp10 complex / snoRNA guided rRNA 2'-O-methylation / rRNA (pseudouridine) methyltransferase activity / regulation of rRNA processing / rRNA (adenine-N6,N6-)-dimethyltransferase activity / endonucleolytic cleavage in 5'-ETS of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / rRNA modification / septum digestion after cytokinesis / snRNA binding / positive regulation of RNA binding / SUMOylation of RNA binding proteins / box C/D sno(s)RNA 3'-end processing / tRNA export from nucleus / regulation of transcription by RNA polymerase I / endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / rDNA heterochromatin / rRNA methyltransferase activity / positive regulation of rRNA processing / box C/D methylation guide snoRNP complex / rRNA base methylation / single-stranded telomeric DNA binding / rRNA primary transcript binding / 90S preribosome assembly / sno(s)RNA-containing ribonucleoprotein complex / U4 snRNA binding / protein localization to nucleolus / O-methyltransferase activity / mTORC1-mediated signalling / ヒドロキシル化 / rRNA methylation / poly(U) RNA binding / U3 snoRNA binding / : / poly(A)+ mRNA export from nucleus / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / precatalytic spliceosome / Ribosomal scanning and start codon recognition / preribosome, small subunit precursor / snoRNA binding / establishment of cell polarity / positive regulation of transcription by RNA polymerase I / Major pathway of rRNA processing in the nucleolus and cytosol / SRP-dependent cotranslational protein targeting to membrane / 90S preribosome / GTP hydrolysis and joining of the 60S ribosomal subunit / Formation of a pool of free 40S subunits / nucleolar large rRNA transcription by RNA polymerase I / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / L13a-mediated translational silencing of Ceruloplasmin expression / enzyme activator activity / proteasome assembly / 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) / regulation of translational fidelity / 転写後修飾 / maturation of SSU-rRNA / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of LSU-rRNA / U4/U6 x U5 tri-snRNP complex / RNA endonuclease activity / 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 / nuclear periphery / small-subunit processome / helicase activity / maintenance of translational fidelity / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / mRNA splicing, via spliceosome / rRNA processing / ribosomal small subunit assembly / cytosolic small ribosomal subunit / unfolded protein binding / リボソーム生合成 / small ribosomal subunit / cytoplasmic translation / cytosolic large ribosomal subunit / tRNA binding / RNA helicase activity / rRNA binding / ヘリカーゼ / リボソーム 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: 3.8 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 | 6zqd.cif.gz | 5 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6zqd.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 6zqd.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
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/zq/6zqd ftp://data.pdbj.org/pub/pdb/validation_reports/zq/6zqd | HTTPS FTP |
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-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 , 16種, 19分子 UAUCUPUQCACBCFCGCLCMJDJFJGJHJIJLJPJJDF
+Nucleolar complex protein ... , 2種, 2分子 UBUS
+U3 small nucleolar RNA-associated protein ... , 17種, 17分子 UDUEUFUGUHUIUJUKULUMUNUOURUTUUUVCK
+RRNA-processing protein ... , 2種, 2分子 UXJM
+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 ... , 17種, 17分子 DbDADEDGDHDIDJDLDNDODQDSDTDWDXDYDc
+RNA鎖 , 3種, 3分子 D2D3D4
+非ポリマー , 3種, 4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 Post-A1 / タイプ: RIBOSOME / Entity ID: #1-#63 / 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 FIELDBright-field microscopy | ||||||||||||
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: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 176136 / 対称性のタイプ: POINT |