- EMDB-6697: Cryo-EM structure of the 90S small subunit pre-ribosome (Noc4-TAP) -
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基本情報
登録情報
データベース: EMDB / ID: EMD-6697
タイトル
Cryo-EM structure of the 90S small subunit pre-ribosome (Noc4-TAP)
マップデータ
試料
複合体: 90S small subunit pre-ribosome (Noc4-TAP)
機能・相同性
機能・相同性情報
regulation of ribosomal protein gene transcription by RNA polymerase II / rRNA small subunit pseudouridine methyltransferase Nep1 / box H/ACA snoRNA binding / RNA fragment catabolic process / rRNA 2'-O-methylation / CURI complex / UTP-C complex / endonucleolytic cleavage in ITS1 upstream of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / t-UTP complex / nuclear microtubule ...regulation of ribosomal protein gene transcription by RNA polymerase II / rRNA small subunit pseudouridine methyltransferase Nep1 / box H/ACA snoRNA binding / RNA fragment catabolic process / rRNA 2'-O-methylation / CURI complex / UTP-C complex / endonucleolytic cleavage in ITS1 upstream of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / t-UTP complex / nuclear microtubule / Mpp10 complex / snoRNA guided rRNA 2'-O-methylation / Pwp2p-containing subcomplex of 90S preribosome / rRNA (pseudouridine) methyltransferase activity / rRNA modification / box C/D sno(s)RNA binding / regulation of rRNA processing / septum digestion after cytokinesis / histone H2AQ104 methyltransferase activity / snRNA binding / RNA folding chaperone / box C/D sno(s)RNA 3'-end processing / endonucleolytic cleavage in 5'-ETS of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / rRNA methyltransferase activity / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / rDNA heterochromatin / endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of transcription by RNA polymerase I / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / box C/D methylation guide snoRNP complex / U4/U6 snRNP / tRNA export from nucleus / single-stranded telomeric DNA binding / rRNA primary transcript binding / sno(s)RNA-containing ribonucleoprotein complex / Negative regulators of DDX58/IFIH1 signaling / rRNA base methylation / SUMOylation of RNA binding proteins / U4 snRNA binding / protein localization to nucleolus / O-methyltransferase activity / 90S preribosome assembly / mTORC1-mediated signalling / rRNA methylation / Protein hydroxylation / U4 snRNP / U3 snoRNA binding / poly(U) RNA binding / 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 / precatalytic spliceosome / Ribosomal scanning and start codon recognition / snoRNA binding / preribosome, small subunit precursor / establishment of cell polarity / Major pathway of rRNA processing in the nucleolus and cytosol / spliceosomal complex assembly / positive regulation of transcription by RNA polymerase I / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / 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) / Formation of a pool of free 40S subunits / L13a-mediated translational silencing of Ceruloplasmin expression / 90S preribosome / Ub-specific processing proteases / proteasome assembly / ribosomal subunit export from nucleus / regulation of translational fidelity / 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 / ribosomal small subunit export from nucleus / RNA endonuclease activity / 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 / ribosome assembly / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / spliceosomal complex / small-subunit processome / translational initiation / enzyme activator activity / modification-dependent protein catabolic process / protein tag activity / mRNA splicing, via spliceosome / maintenance of translational fidelity / cytoplasmic stress granule / rRNA processing / unfolded protein binding / ribosome biogenesis / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 / cytoplasmic translation / protein ubiquitination 類似検索 - 分子機能
rRNA biogenesis protein Rrp5 / : / : / Ribosomal RNA assembly KRR1 / : / : / : / KRR1 small subunit processome component, second KH domain / WD repeat-containing protein 75 second beta-propeller / NOL6/Upt22 ...rRNA biogenesis protein Rrp5 / : / : / Ribosomal RNA assembly KRR1 / : / : / : / KRR1 small subunit processome component, second KH domain / WD repeat-containing protein 75 second beta-propeller / NOL6/Upt22 / Nrap protein domain 1 / Nrap protein, domain 2 / Nrap protein, domain 3 / Nrap protein, domain 4 / Nrap protein, domain 5 / Nrap protein, domain 6 / Nrap protein domain 1 / Nrap protein PAP/OAS-like domain / Nrap protein domain 3 / Nrap protein nucleotidyltransferase domain 4 / Nrap protein PAP/OAS1-like domain 5 / Nrap protein domain 6 / Ribosomal RNA-processing protein 7, C-terminal domain / Ribosomal RNA-processing protein 7 / Rrp7, RRM-like N-terminal domain / Ribosomal RNA-processing protein 7 (RRP7) C-terminal domain / Rrp7 RRM-like N-terminal domain / rRNA-processing protein Fcf1, PIN domain / rRNA-processing protein Fcf1/Utp23 / Fcf1 / Nucleolar protein 58/56, N-terminal / U3 small nucleolar RNA-associated protein 18 / NOP5NT (NUC127) domain / : / WDR3 second beta-propeller domain / WDR3 first beta-propeller domain / BP28, C-terminal domain / RNA 3'-terminal phosphate cyclase-like, conserved site / U3 small nucleolar RNA-associated protein 10, N-terminal / Ribosome biogenesis protein Bms1, N-terminal / U3 small nucleolar RNA-associated protein 10 / : / BP28CT (NUC211) domain / U3 small nucleolar RNA-associated protein 10 / HEATR1-like, HEAT repeats / RNA 3'-terminal phosphate cyclase signature. / BP28CT (NUC211) domain / U3 small nucleolar RNA-associated protein 13, C-terminal / Periodic tryptophan protein 2 / Utp13 specific WD40 associated domain / Small-subunit processome, Utp12 / Dip2/Utp12 Family / Small-subunit processome, Utp21 / U3 small nucleolar ribonucleoprotein complex, subunit Mpp10 / RNA 3'-terminal phosphate cyclase type 2 / Mpp10 protein / Utp21 specific WD40 associated putative domain / WDR36/Utp21 second beta-propeller domain / WDR36/Utp21 first beta-propeller / Ribosomal RNA-processing protein Rrp9-like / PRP39 N-terminal HAT repeat / RNA 3'-terminal phosphate cyclase / Ribosomal biogenesis, methyltransferase, EMG1/NEP1 / RNA 3'-terminal phosphate cyclase, insert domain / RNA 3'-terminal phosphate cyclase domain / RNA 3'-terminal phosphate cyclase, insert domain superfamily / RNA 3'-terminal phosphate cyclase domain superfamily / RNA 3'-terminal phosphate cyclase / EMG1/NEP1 methyltransferase / RNA 3'-terminal phosphate cyclase (RTC), insert domain / Nucleolar protein Nop56/Nop58 / Bystin / Krr1, KH1 domain / Bystin / Krr1 KH1 domain / rRNA 2'-O-methyltransferase fibrillarin-like / Fibrillarin, conserved site / Fibrillarin / Fibrillarin signature. / Fibrillarin / : / : / Eukaryotic type KH-domain (KH-domain type I) (327.11.2) / U3 snoRNP protein/Ribosome production factor 1 / Anaphase-promoting complex subunit 4, WD40 domain / Large family of predicted nucleotide-binding domains / Ribosome biogenesis protein BMS1/TSR1, C-terminal / AARP2CN / Bms1/Tsr1-type G domain / Ribosome biogenesis protein Bms1/Tsr1 / 40S ribosome biogenesis protein Tsr1 and BMS1 C-terminal / AARP2CN (NUC121) domain / Bms1-type guanine nucleotide-binding (G) domain profile. / AARP2CN (NUC121) domain / Protein of unknown function (DUF663) / Anaphase-promoting complex subunit 4 WD40 domain / PIN domain / NOSIC / NOSIC (NUC001) domain / Nop domain 類似検索 - ドメイン・相同性
Small ribosomal subunit protein uS4A / Small ribosomal subunit protein uS15 / Ubiquitin-ribosomal protein eS31 fusion protein / Small ribosomal subunit protein uS11A / Small ribosomal subunit protein uS8A / Small ribosomal subunit protein uS12A / Small ribosomal subunit protein eS24A / Small ribosomal subunit protein eS30A / Small ribosomal subunit protein eS4A / Small ribosomal subunit protein eS6A ...Small ribosomal subunit protein uS4A / Small ribosomal subunit protein uS15 / Ubiquitin-ribosomal protein eS31 fusion protein / Small ribosomal subunit protein uS11A / Small ribosomal subunit protein uS8A / Small ribosomal subunit protein uS12A / Small ribosomal subunit protein eS24A / Small ribosomal subunit protein eS30A / Small ribosomal subunit protein eS4A / Small ribosomal subunit protein eS6A / Small ribosomal subunit protein eS8A / Small ribosomal subunit protein uS17A / Small ribosomal subunit protein uS9A / rRNA 2'-O-methyltransferase fibrillarin / Ribosomal RNA-processing protein 7 / KRR1 small subunit processome component / Periodic tryptophan protein 2 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein eS7A / U3 small nucleolar ribonucleoprotein protein IMP3 / Small ribosomal subunit protein eS1A / Small ribosomal subunit protein eS27A / Ribosome biogenesis protein UTP30 / Essential nuclear protein 1 / 13 kDa ribonucleoprotein-associated protein / U3 small nucleolar RNA-associated protein 18 / U3 small nucleolar RNA-associated protein 10 / U3 small nucleolar RNA-associated protein MPP10 / Small ribosomal subunit protein eS12 / U3 small nucleolar RNA-associated protein 22 / U3 small nucleolar ribonucleoprotein protein IMP4 / rRNA biogenesis protein RRP5 / rRNA-processing protein FCF1 / U3 small nucleolar RNA-associated protein 13 / U3 small nucleolar RNA-associated protein 21 / Ribosomal RNA small subunit methyltransferase NEP1 / Ribosomal RNA-processing protein 9 / rRNA processing protein RCL1 / Ribosome biogenesis protein BMS1 / U3 small nucleolar RNA-associated protein 12 / Nucleolar protein 56 / Nucleolar protein 58 / Small ribosomal subunit protein eS28A / Pre-rRNA-processing protein PNO1 類似検索 - 構成要素
ジャーナル: Elife / 年: 2017 タイトル: Molecular architecture of the 90S small subunit pre-ribosome. 著者: Qi Sun / Xing Zhu / Jia Qi / Weidong An / Pengfei Lan / Dan Tan / Rongchang Chen / Bing Wang / Sanduo Zheng / Cheng Zhang / Xining Chen / Wei Zhang / Jing Chen / Meng-Qiu Dong / Keqiong Ye / 要旨: Eukaryotic small ribosomal subunits are first assembled into 90S pre-ribosomes. The complete 90S is a gigantic complex with a molecular mass of approximately five megadaltons. Here, we report the ...Eukaryotic small ribosomal subunits are first assembled into 90S pre-ribosomes. The complete 90S is a gigantic complex with a molecular mass of approximately five megadaltons. Here, we report the nearly complete architecture of 90S determined from three cryo-electron microscopy single particle reconstructions at 4.5 to 8.7 angstrom resolution. The majority of the density maps were modeled and assigned to specific RNA and protein components. The nascent ribosome is assembled into isolated native-like substructures that are stabilized by abundant assembly factors. The 5' external transcribed spacer and U3 snoRNA nucleate a large subcomplex that scaffolds the nascent ribosome. U3 binds four sites of pre-rRNA, including a novel site on helix 27 but not the 3' side of the central pseudoknot, and crucially organizes the 90S structure. The 90S model provides significant insight into the principle of small subunit assembly and the function of assembly factors.