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Yorodumi- EMDB-32807: Cryo-EM structure of a human pre-40S ribosomal subunit - State RR... -
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Basic information
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| Title | Cryo-EM structure of a human pre-40S ribosomal subunit - State RRP12-B3 | |||||||||
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Keywords | ribosome biogenesis / 40S ribosome / RIBOSOME | |||||||||
| Function / homology | Function and homology informationpositive regulation of ribosomal small subunit export from nucleus / 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 rRNA processing / positive regulation of ubiquitin-protein transferase activity / positive regulation of respiratory burst involved in inflammatory response / nucleolus organization / regulation of mitotic metaphase/anaphase transition / negative regulation of RNA splicing ...positive regulation of ribosomal small subunit export from nucleus / 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 rRNA processing / positive regulation of ubiquitin-protein transferase activity / positive regulation of respiratory burst involved in inflammatory response / nucleolus organization / regulation of mitotic metaphase/anaphase transition / negative regulation of RNA splicing / U3 snoRNA binding / neural crest cell differentiation / snoRNA binding / preribosome, small subunit precursor / rRNA modification in the nucleus and cytosol / negative regulation of bicellular tight junction assembly / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / Ribosomal scanning and start codon recognition / laminin receptor activity / Translation initiation complex formation / fibroblast growth factor binding / monocyte chemotaxis / Protein hydroxylation / SARS-CoV-1 modulates host translation machinery / TOR signaling / mTORC1-mediated signalling / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / cellular response to ethanol / Eukaryotic Translation Termination / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / Viral mRNA Translation / ubiquitin ligase inhibitor activity / negative regulation of respiratory burst involved in inflammatory response / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of signal transduction by p53 class mediator / GTP hydrolysis and joining of the 60S ribosomal subunit / negative regulation of ubiquitin-dependent protein catabolic process / 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 / 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) / rough endoplasmic reticulum / ribosomal small subunit export from nucleus / positive regulation of cell cycle / laminin binding / RNA endonuclease activity / translation initiation factor binding / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / visual perception / FLT3 signaling by CBL mutants / IRAK2 mediated activation of TAK1 complex / Prevention of phagosomal-lysosomal fusion / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / MDM2/MDM4 family protein binding / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Endosomal Sorting Complex Required For Transport (ESCRT) / Membrane binding and targetting of GAG proteins / Negative regulation of FLT3 / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / Constitutive Signaling by NOTCH1 HD Domain Mutants / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1,TRAF6-dependent induction of TAK1 complex / cytosolic ribosome / liver regeneration / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / Mitotic Prometaphase / Regulation of FZD by ubiquitination / Downregulation of ERBB4 signaling / EML4 and NUDC in mitotic spindle formation / APC-Cdc20 mediated degradation of Nek2A / p75NTR recruits signalling complexes / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / NF-kB is activated and signals survival / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / Pexophagy / Regulation of innate immune responses to cytosolic DNA / NRIF signals cell death from the nucleus / Downregulation of ERBB2:ERBB3 signaling Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||
Authors | Cheng J / Lau B / Thoms M / Ameismeier M / Berninghausen O / Hurt E / Beckmann R | |||||||||
| Funding support | 1 items
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Citation | Journal: Nucleic Acids Res / Year: 2022Title: 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. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_32807.map.gz | 105.5 MB | EMDB map data format | |
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| Header (meta data) | emd-32807-v30.xml emd-32807.xml | 51.9 KB 51.9 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_32807_fsc.xml | 12.8 KB | Display | FSC data file |
| Images | emd_32807.png | 141.9 KB | ||
| Filedesc metadata | emd-32807.cif.gz | 12.7 KB | ||
| Others | emd_32807_additional_1.map.gz emd_32807_additional_2.map.gz | 108.4 MB 108.3 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-32807 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-32807 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7wu0MC ![]() 7wtnC ![]() 7wtoC ![]() 7wtpC ![]() 7wtqC ![]() 7wtrC ![]() 7wtsC ![]() 7wttC ![]() 7wtuC ![]() 7wtvC ![]() 7wtwC ![]() 7wtxC ![]() 7wtzC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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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_32807.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:
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-Supplemental data
-Additional map: #2
| File | emd_32807_additional_1.map | ||||||||||||
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-Additional map: #1
| File | emd_32807_additional_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : Yeast pre-40S ribosomal subunit
+Supramolecule #1: Yeast pre-40S ribosomal subunit
+Macromolecule #1: 18S rRNA
+Macromolecule #2: 40S ribosomal protein S5
+Macromolecule #3: 40S ribosomal protein S12
+Macromolecule #4: 40S ribosomal protein S15
+Macromolecule #5: 40S ribosomal protein S16
+Macromolecule #6: 40S ribosomal protein S17
+Macromolecule #7: 40S ribosomal protein S18
+Macromolecule #8: 40S ribosomal protein S19
+Macromolecule #9: 40S ribosomal protein S25
+Macromolecule #10: 40S ribosomal protein S28
+Macromolecule #11: Ubiquitin-40S ribosomal protein S27a
+Macromolecule #12: 40S ribosomal protein SA
+Macromolecule #13: 40S ribosomal protein S3a
+Macromolecule #14: 40S ribosomal protein S2
+Macromolecule #15: 40S ribosomal protein S4, X isoform
+Macromolecule #16: 40S ribosomal protein S6
+Macromolecule #17: 40S ribosomal protein S7
+Macromolecule #18: 40S ribosomal protein S8
+Macromolecule #19: 40S ribosomal protein S9
+Macromolecule #20: 40S ribosomal protein S11
+Macromolecule #21: 40S ribosomal protein S13
+Macromolecule #22: 40S ribosomal protein S14
+Macromolecule #23: 40S ribosomal protein S21
+Macromolecule #24: 40S ribosomal protein S15a
+Macromolecule #25: 40S ribosomal protein S23
+Macromolecule #26: 40S ribosomal protein S24
+Macromolecule #27: 40S ribosomal protein S27
+Macromolecule #28: 40S ribosomal protein S30
+Macromolecule #29: RNA-binding protein PNO1
+Macromolecule #30: RNA-binding protein NOB1
+Macromolecule #31: Pre-rRNA-processing protein TSR1 homolog
+Macromolecule #32: Bystin
+Macromolecule #33: Protein LTV1 homolog
+Macromolecule #34: RRP12-like protein
+Macromolecule #35: Serine/threonine-protein kinase RIO2
+Macromolecule #36: ZINC ION
-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: 7.4 |
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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: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 44.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.8 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi



Keywords
Homo sapiens (human)
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Processing
FIELD EMISSION GUN

