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Yorodumi- EMDB-11517: Cryo-EM structure of a late human pre-40S ribosomal subunit - State F1 -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-11517 | |||||||||
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Title | Cryo-EM structure of a late human pre-40S ribosomal subunit - State F1 | |||||||||
Map data | ||||||||||
Sample |
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Keywords | Ribosome Biogenesis / Pre-40S / RIBOSOME | |||||||||
Function / homology | Function and homology information methyltransferase complex / phenylalanine-tRNA ligase activity / phenylalanyl-tRNA aminoacylation / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to catalyse transmembrane movement of substances / positive regulation of rRNA processing / : / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair ...methyltransferase complex / phenylalanine-tRNA ligase activity / phenylalanyl-tRNA aminoacylation / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to catalyse transmembrane movement of substances / positive regulation of rRNA processing / : / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / protein tyrosine kinase inhibitor activity / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / nucleolus organization / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / IRE1-RACK1-PP2A complex / positive regulation of endodeoxyribonuclease activity / positive regulation of Golgi to plasma membrane protein transport / TNFR1-mediated ceramide production / negative regulation of RNA splicing / negative regulation of DNA repair / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / supercoiled DNA binding / oxidized purine DNA binding / neural crest cell differentiation / NF-kappaB complex / ubiquitin-like protein conjugating enzyme binding / regulation of establishment of cell polarity / positive regulation of ubiquitin-protein transferase activity / negative regulation of phagocytosis / rRNA modification in the nucleus and cytosol / erythrocyte homeostasis / Formation of the ternary complex, and subsequently, the 43S complex / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / preribosome, small subunit precursor / pigmentation / protein kinase A binding / negative regulation of ubiquitin protein ligase activity / Ribosomal scanning and start codon recognition / ion channel inhibitor activity / Translation initiation complex formation / mammalian oogenesis stage / fibroblast growth factor binding / positive regulation of mitochondrial depolarization / activation-induced cell death of T cells / positive regulation of T cell receptor signaling pathway / negative regulation of peptidyl-serine phosphorylation / iron-sulfur cluster binding / negative regulation of Wnt signaling pathway / positive regulation of activated T cell proliferation / monocyte chemotaxis / Protein hydroxylation / regulation of cell division / BH3 domain binding / cysteine-type endopeptidase activator activity involved in apoptotic process / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / Peptide chain elongation / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / Formation of a pool of free 40S subunits / ubiquitin ligase inhibitor activity / Eukaryotic Translation Termination / phagocytic cup / negative regulation of respiratory burst involved in inflammatory response / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / Viral mRNA Translation / negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / 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 / TOR signaling / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / T cell proliferation involved in immune response / regulation of translational fidelity / spindle assembly / positive regulation of cell cycle / Major pathway of rRNA processing in the nucleolus and cytosol / erythrocyte development / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / negative regulation of ubiquitin-dependent protein catabolic process / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Protein methylation / positive regulation of intrinsic apoptotic signaling pathway / ribosomal small subunit export from nucleus / Nuclear events stimulated by ALK signaling in cancer / translation regulator activity / signaling adaptor activity / laminin binding / negative regulation of smoothened signaling pathway / stress granule assembly / Mitotic Prometaphase / rough endoplasmic reticulum / 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) / antiviral innate immune response / positive regulation of JUN kinase activity Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | |||||||||
Authors | Ameismeier M / Zemp I | |||||||||
Funding support | Germany, 1 items
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Citation | Journal: Nature / Year: 2020 Title: Structural basis for the final steps of human 40S ribosome maturation. Authors: Michael Ameismeier / Ivo Zemp / Jasmin van den Heuvel / Matthias Thoms / Otto Berninghausen / Ulrike Kutay / Roland Beckmann / Abstract: Eukaryotic ribosomes consist of a small 40S and a large 60S subunit that are assembled in a highly coordinated manner. More than 200 factors ensure correct modification, processing and folding of ...Eukaryotic ribosomes consist of a small 40S and a large 60S subunit that are assembled in a highly coordinated manner. More than 200 factors ensure correct modification, processing and folding of ribosomal RNA and the timely incorporation of ribosomal proteins. Small subunit maturation ends in the cytosol, when the final rRNA precursor, 18S-E, is cleaved at site 3 by the endonuclease NOB1. Previous structures of human 40S precursors have shown that NOB1 is kept in an inactive state by its partner PNO1. The final maturation events, including the activation of NOB1 for the decisive rRNA-cleavage step and the mechanisms driving the dissociation of the last biogenesis factors have, however, remained unresolved. Here we report five cryo-electron microscopy structures of human 40S subunit precursors, which describe the compositional and conformational progression during the final steps of 40S assembly. Our structures explain the central role of RIOK1 in the displacement and dissociation of PNO1, which in turn allows conformational changes and activation of the endonuclease NOB1. In addition, we observe two factors, eukaryotic translation initiation factor 1A domain-containing protein (EIF1AD) and leucine-rich repeat-containing protein 47 (LRRC47), which bind to late pre-40S particles near RIOK1 and the central rRNA helix 44. Finally, functional data shows that EIF1AD is required for efficient assembly factor recycling and 18S-E processing. Our results thus enable a detailed understanding of the last steps in 40S formation in human cells and, in addition, provide evidence for principal differences in small ribosomal subunit formation between humans and the model organism Saccharomyces cerevisiae. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_11517.map.gz | 105.5 MB | EMDB map data format | |
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Header (meta data) | emd-11517-v30.xml emd-11517.xml | 54.6 KB 54.6 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_11517_fsc.xml | 12.8 KB | Display | FSC data file |
Images | emd_11517.png | 174.2 KB | ||
Masks | emd_11517_msk_1.map | 178 MB | Mask map | |
Filedesc metadata | emd-11517.cif.gz | 11.9 KB | ||
Others | emd_11517_additional_1.map.gz emd_11517_half_map_1.map.gz emd_11517_half_map_2.map.gz | 166.7 MB 141.1 MB 141.3 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-11517 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-11517 | HTTPS FTP |
-Validation report
Summary document | emd_11517_validation.pdf.gz | 1 MB | Display | EMDB validaton report |
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Full document | emd_11517_full_validation.pdf.gz | 1 MB | Display | |
Data in XML | emd_11517_validation.xml.gz | 20.4 KB | Display | |
Data in CIF | emd_11517_validation.cif.gz | 26.9 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11517 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11517 | HTTPS FTP |
-Related structure data
Related structure data | 6zxdMC 6zxeC 6zxfC 6zxgC 6zxhC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_11517.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.059 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
File | emd_11517_msk_1.map | ||||||||||||
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-Additional map: #1
File | emd_11517_additional_1.map | ||||||||||||
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Density Histograms |
-Half map: #1
File | emd_11517_half_map_1.map | ||||||||||||
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-Half map: #2
File | emd_11517_half_map_2.map | ||||||||||||
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Density Histograms |
-Sample components
+Entire : Cryo-EM structure of a late human pre-40S ribosomal subunit - State F1
+Supramolecule #1: Cryo-EM structure of a late human pre-40S ribosomal subunit - State F1
+Macromolecule #1: pre-18S ribosomal RNA
+Macromolecule #2: 40S ribosomal protein S17
+Macromolecule #3: 40S ribosomal protein SA
+Macromolecule #4: 40S ribosomal protein S3a
+Macromolecule #5: 40S ribosomal protein S2
+Macromolecule #6: 40S ribosomal protein S4, X isoform
+Macromolecule #7: 40S ribosomal protein S6
+Macromolecule #8: 40S ribosomal protein S7
+Macromolecule #9: 40S ribosomal protein S8
+Macromolecule #10: 40S ribosomal protein S9
+Macromolecule #11: 40S ribosomal protein S11
+Macromolecule #12: 40S ribosomal protein S13
+Macromolecule #13: 40S ribosomal protein S14
+Macromolecule #14: 40S ribosomal protein S21
+Macromolecule #15: 40S ribosomal protein S15a
+Macromolecule #16: 40S ribosomal protein S23
+Macromolecule #17: 40S ribosomal protein S24
+Macromolecule #18: 40S ribosomal protein S27
+Macromolecule #19: 40S ribosomal protein S30
+Macromolecule #20: RNA-binding protein PNO1
+Macromolecule #21: RNA-binding protein NOB1
+Macromolecule #22: 40S ribosomal protein S29
+Macromolecule #23: 40S ribosomal protein S3
+Macromolecule #24: 40S ribosomal protein S5
+Macromolecule #25: 40S ribosomal protein S10
+Macromolecule #26: 40S ribosomal protein S12
+Macromolecule #27: 40S ribosomal protein S15
+Macromolecule #28: 40S ribosomal protein S16
+Macromolecule #29: 40S ribosomal protein S18
+Macromolecule #30: 40S ribosomal protein S19
+Macromolecule #31: 40S ribosomal protein S20
+Macromolecule #32: 40S ribosomal protein S25
+Macromolecule #33: 40S ribosomal protein S28
+Macromolecule #34: Ubiquitin-40S ribosomal protein S27a
+Macromolecule #35: Receptor of activated protein C kinase 1
+Macromolecule #36: Serine/threonine-protein kinase RIO1
+Macromolecule #37: Leucine-rich repeat-containing protein 47
+Macromolecule #38: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.6 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 48.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |