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Yorodumi- EMDB-4348: Cryo-EM structure of a late human pre-40S ribosomal subunit - State B -
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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-4348 | |||||||||||||||
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| Title | Cryo-EM structure of a late human pre-40S ribosomal subunit - State B | |||||||||||||||
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Keywords | 40S / pre-40S / ribosome biogenesis / RIBOSOME | |||||||||||||||
| Function / homology | Function and homology informationregulation of protein localization to nucleolus / trophectodermal cell differentiation / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of respiratory burst involved in inflammatory response / nucleolus organization / negative regulation of RNA splicing / neural crest cell differentiation / positive regulation of ubiquitin-protein transferase activity / negative regulation of bicellular tight junction assembly / rRNA modification in the nucleus and cytosol ...regulation of protein localization to nucleolus / trophectodermal cell differentiation / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of respiratory burst involved in inflammatory response / nucleolus organization / negative regulation of RNA splicing / neural crest cell differentiation / positive regulation of ubiquitin-protein transferase activity / negative regulation of bicellular tight junction assembly / rRNA modification in the nucleus and cytosol / U3 snoRNA binding / erythrocyte homeostasis / Formation of the ternary complex, and subsequently, the 43S complex / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / negative regulation of ubiquitin protein ligase activity / snoRNA binding / preribosome, small subunit precursor / Ribosomal scanning and start codon recognition / Translation initiation complex formation / fibroblast growth factor binding / monocyte chemotaxis / TOR signaling / Protein hydroxylation / SARS-CoV-1 modulates host translation machinery / cellular response to ethanol / mTORC1-mediated signalling / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination / ubiquitin ligase inhibitor activity / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / negative regulation of ubiquitin-dependent protein catabolic process / positive regulation of signal transduction by p53 class mediator / Viral mRNA Translation / negative regulation of respiratory burst involved in inflammatory response / 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 / Major pathway of rRNA processing in the nucleolus and cytosol / regulation of translational fidelity / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Protein methylation / Nuclear events stimulated by ALK signaling in cancer / laminin binding / ribosomal small subunit export from nucleus / 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) / translation regulator activity / positive regulation of cell cycle / translation initiation factor binding / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / MDM2/MDM4 family protein binding / antiviral innate immune response / visual perception / Mitotic Prometaphase / liver regeneration / EML4 and NUDC in mitotic spindle formation / cytosolic ribosome / stress granule assembly / RNA endonuclease activity / Resolution of Sister Chromatid Cohesion / cellular response to leukemia inhibitory factor / positive regulation of translation / mRNA 3'-UTR binding / erythrocyte differentiation / stem cell proliferation / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / innate immune response in mucosa / neural tube closure / maturation of SSU-rRNA / small-subunit processome / translational initiation / RHO GTPases Activate Formins / response to insulin / GABA-ergic synapse / maintenance of translational fidelity / modification-dependent protein catabolic process / mRNA 5'-UTR binding / response to virus / Regulation of expression of SLITs and ROBOs / protein tag activity / RMTs methylate histone arginines / cytoplasmic ribonucleoprotein granule / apical part of cell / rRNA processing / antimicrobial humoral immune response mediated by antimicrobial peptide / osteoblast differentiation / Separation of Sister Chromatids / antibacterial humoral response / glucose homeostasis / presynapse / ribosome biogenesis / chromosome / ribosome binding / cell body Similarity search - Function | |||||||||||||||
| Biological species | Homo sapiens (human) | |||||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 4.0 Å | |||||||||||||||
Authors | Ameismeier M / Cheng J | |||||||||||||||
| Funding support | Germany, 4 items
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Citation | Journal: Nature / Year: 2018Title: Visualizing late states of human 40S ribosomal subunit maturation. Authors: Michael Ameismeier / Jingdong Cheng / Otto Berninghausen / Roland Beckmann / ![]() Abstract: The formation of eukaryotic ribosomal subunits extends from the nucleolus to the cytoplasm and entails hundreds of assembly factors. Despite differences in the pathways of ribosome formation, high- ...The formation of eukaryotic ribosomal subunits extends from the nucleolus to the cytoplasm and entails hundreds of assembly factors. Despite differences in the pathways of ribosome formation, high-resolution structural information has been available only from fungi. Here we present cryo-electron microscopy structures of late-stage human 40S assembly intermediates, representing one state reconstituted in vitro and five native states that range from nuclear to late cytoplasmic. The earliest particles reveal the position of the biogenesis factor RRP12 and distinct immature rRNA conformations that accompany the formation of the 40S subunit head. Molecular models of the late-acting assembly factors TSR1, RIOK1, RIOK2, ENP1, LTV1, PNO1 and NOB1 provide mechanistic details that underlie their contribution to a sequential 40S subunit assembly. The NOB1 architecture displays an inactive nuclease conformation that requires rearrangement of the PNO1-bound 3' rRNA, thereby coordinating the final rRNA folding steps with site 3 cleavage. | |||||||||||||||
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Structure visualization
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_4348.map.gz | 17.4 MB | EMDB map data format | |
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| Header (meta data) | emd-4348-v30.xml emd-4348.xml | 47.8 KB 47.8 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_4348_fsc.xml | 12.9 KB | Display | FSC data file |
| Images | emd_4348.png | 159.9 KB | ||
| Filedesc metadata | emd-4348.cif.gz | 11 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-4348 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-4348 | HTTPS FTP |
-Validation report
| Summary document | emd_4348_validation.pdf.gz | 257.2 KB | Display | EMDB validaton report |
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| Full document | emd_4348_full_validation.pdf.gz | 256.3 KB | Display | |
| Data in XML | emd_4348_validation.xml.gz | 13.2 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-4348 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-4348 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6g4sMC ![]() 4337C ![]() 4349C ![]() 4350C ![]() 4351C ![]() 4352C ![]() 4353C ![]() 6g18C ![]() 6g4wC ![]() 6g51C ![]() 6g53C ![]() 6g5hC ![]() 6g5iC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_4348.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: 1.084 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : Cryo-EM structure of a late human pre-40S ribosomal subunit - State B
+Supramolecule #1: Cryo-EM structure of a late human pre-40S ribosomal subunit - State B
+Macromolecule #1: pre-18S ribosomal RNA
+Macromolecule #2: 40S ribosomal protein S17
+Macromolecule #3: 40S ribosomal protein SA
+Macromolecule #4: 40S ribosomal protein S27
+Macromolecule #5: 40S ribosomal protein S3a
+Macromolecule #6: 40S ribosomal protein S2
+Macromolecule #7: 40S ribosomal protein S28
+Macromolecule #8: 40S ribosomal protein S4, X isoform
+Macromolecule #9: 40S ribosomal protein S30
+Macromolecule #10: 40S ribosomal protein S5
+Macromolecule #11: 40S ribosomal protein S7
+Macromolecule #12: 40S ribosomal protein S6
+Macromolecule #13: 40S ribosomal protein S25
+Macromolecule #14: 40S ribosomal protein S24
+Macromolecule #15: RNA-binding protein NOB1
+Macromolecule #16: RNA-binding protein PNO1
+Macromolecule #17: 40S ribosomal protein S23
+Macromolecule #18: Bystin
+Macromolecule #19: 40S ribosomal protein S15a
+Macromolecule #20: 40S ribosomal protein S21
+Macromolecule #21: Pre-rRNA-processing protein TSR1 homolog
+Macromolecule #22: Protein LTV1 homolog
+Macromolecule #23: 40S ribosomal protein S19
+Macromolecule #24: 40S ribosomal protein S18
+Macromolecule #25: 40S ribosomal protein S16
+Macromolecule #26: 40S ribosomal protein S15
+Macromolecule #27: 40S ribosomal protein S14
+Macromolecule #28: 40S ribosomal protein S13
+Macromolecule #29: 40S ribosomal protein S11
+Macromolecule #30: 40S ribosomal protein S9
+Macromolecule #31: 40S ribosomal protein S8
+Macromolecule #32: RRP12
+Macromolecule #33: Unknown
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.6 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: FEI FALCON II (4k x 4k) / Average electron dose: 2.5 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 |
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About Yorodumi


Keywords
Homo sapiens (human)
Authors
Germany, 4 items
Citation
UCSF Chimera







































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Y (Row.)
X (Col.)





















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