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- PDB-7wts: Cryo-EM structure of a human pre-40S ribosomal subunit - State UTP14 -
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Open data
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Basic information
Entry | Database: PDB / ID: 7wts | ||||||
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Title | Cryo-EM structure of a human pre-40S ribosomal subunit - State UTP14 | ||||||
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![]() | RIBOSOME / ribosome biogenesis / 40S ribosome | ||||||
Function / homology | ![]() 18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase / 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase activity / peptidyl-glutamine methylation / tRNA (m2G10) methyltransferase complex / rRNA (guanine-N7)-methylation / tRNA methyltransferase activator activity / rRNA (guanine) methyltransferase activity / rRNA (adenine-N6,N6-)-dimethyltransferase activity / tRNA modification in the nucleus and cytosol / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) ...18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase / 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase activity / peptidyl-glutamine methylation / tRNA (m2G10) methyltransferase complex / rRNA (guanine-N7)-methylation / tRNA methyltransferase activator activity / rRNA (guanine) methyltransferase activity / rRNA (adenine-N6,N6-)-dimethyltransferase activity / tRNA modification in the nucleus and cytosol / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Methylation / protein methyltransferase activity / tRNA methylation / positive regulation of rRNA processing / translation at postsynapse / rRNA methylation / negative regulation of RNA splicing / mammalian oogenesis stage / activation-induced cell death of T cells / neural crest cell differentiation / U3 snoRNA binding / translation at presynapse / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / rRNA modification in the nucleus and cytosol / preribosome, small subunit precursor / negative regulation of ubiquitin protein ligase activity / Ribosomal scanning and start codon recognition / Translation initiation complex formation / Protein hydroxylation / TOR signaling / SARS-CoV-1 modulates host translation machinery / mTORC1-mediated signalling / T cell proliferation involved in immune response / Peptide chain elongation / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Selenocysteine synthesis / Formation of a pool of free 40S subunits / ubiquitin ligase inhibitor activity / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / negative regulation of ubiquitin-dependent protein catabolic process / Viral mRNA Translation / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / 90S preribosome / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / erythrocyte development / Major pathway of rRNA processing in the nucleolus and cytosol / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / maturation of LSU-rRNA / Nuclear events stimulated by ALK signaling in cancer / rough endoplasmic reticulum / translation regulator activity / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / positive regulation of cell cycle / translation initiation factor binding / gastrulation / cytosolic ribosome / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / stress granule assembly / Resolution of Sister Chromatid Cohesion / transcription initiation-coupled chromatin remodeling / innate immune response in mucosa / erythrocyte differentiation / Transferases; Transferring one-carbon groups; Methyltransferases / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of translation / mRNA 3'-UTR binding / methyltransferase activity / maturation of SSU-rRNA / neural tube closure / translational initiation / small-subunit processome / placenta development / RHO GTPases Activate Formins / maintenance of translational fidelity / response to virus / modification-dependent protein catabolic process / mRNA 5'-UTR binding / G1/S transition of mitotic cell cycle / Regulation of expression of SLITs and ROBOs / cytoplasmic ribonucleoprotein granule / protein tag activity / antimicrobial humoral immune response mediated by antimicrobial peptide / rRNA processing / Separation of Sister Chromatids / antibacterial humoral response / glucose homeostasis / presynapse / chromatin organization / T cell differentiation in thymus / cell body / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / small ribosomal subunit rRNA binding Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||
![]() | Cheng, J. / Lau, B. / Thoms, M. / Ameismeier, M. / Berninghausen, O. / Hurt, E. / Beckmann, R. | ||||||
Funding support | 1items
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![]() | ![]() Title: The nucleoplasmic phase of pre-40S formation prior to nuclear export. Authors: Jingdong Cheng / Benjamin Lau / Matthias Thoms / Michael Ameismeier / Otto Berninghausen / Ed Hurt / Roland Beckmann / ![]() ![]() Abstract: Biogenesis of the small ribosomal subunit in eukaryotes starts in the nucleolus with the formation of a 90S precursor and ends in the cytoplasm. Here, we elucidate the enigmatic structural ...Biogenesis of the small ribosomal subunit in eukaryotes starts in the nucleolus with the formation of a 90S precursor and ends in the cytoplasm. Here, we elucidate the enigmatic structural transitions of assembly intermediates from human and yeast cells during the nucleoplasmic maturation phase. After dissociation of all 90S factors, the 40S body adopts a close-to-mature conformation, whereas the 3' major domain, later forming the 40S head, remains entirely immature. A first coordination is facilitated by the assembly factors TSR1 and BUD23-TRMT112, followed by re-positioning of RRP12 that is already recruited early to the 90S for further head rearrangements. Eventually, the uS2 cluster, CK1 (Hrr25 in yeast) and the export factor SLX9 associate with the pre-40S to provide export competence. These exemplary findings reveal the evolutionary conserved mechanism of how yeast and humans assemble the 40S ribosomal subunit, but reveal also a few minor differences. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 1.4 MB | Display | ![]() |
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PDB format | ![]() | 1.1 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 32799MC ![]() 7wtnC ![]() 7wtoC ![]() 7wtpC ![]() 7wtqC ![]() 7wtrC ![]() 7wttC ![]() 7wtuC ![]() 7wtvC ![]() 7wtwC ![]() 7wtxC ![]() 7wtzC ![]() 7wu0C M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-RNA chain , 1 types, 1 molecules 2
#1: RNA chain | Mass: 604102.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-40S ribosomal protein ... , 14 types, 14 molecules bBEeHGYXWONLJI
#2: Protein | Mass: 9480.186 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#3: Protein | Mass: 30002.061 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#4: Protein | Mass: 29654.869 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#5: Protein | Mass: 6668.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#6: Protein | Mass: 22168.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#7: Protein | Mass: 28751.906 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#8: Protein | Mass: 15463.333 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#10: Protein | Mass: 15844.666 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#11: Protein | Mass: 14865.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#13: Protein | Mass: 16302.772 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#14: Protein | Mass: 17259.389 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#15: Protein | Mass: 18468.826 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#16: Protein | Mass: 22641.564 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#17: Protein | Mass: 24263.387 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein , 8 types, 8 molecules xurqKz53
#9: Protein | Mass: 27970.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#12: Protein | Mass: 91951.188 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#18: Protein | Mass: 14215.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#19: Protein | Mass: 31925.428 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: O43709, Transferases; Transferring one-carbon groups; Methyltransferases |
#20: Protein | Mass: 143916.516 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#21: Protein | Mass: 25503.346 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#22: Protein | Mass: 88129.125 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#23: Protein | Mass: 35292.434 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: Q9UNQ2, 18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Yeast pre-40S ribosomal subunit / Type: RIBOSOME / Entity ID: all / Source: NATURAL |
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Source (natural) | Organism: ![]() |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 800 nm |
Image recording | Electron dose: 44 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
CTF correction | Details: Relion / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 8843 / Symmetry type: POINT |