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Yorodumi- EMDB-62450: Bat MERSr-CoV NL140422 Nsp1 bound to the Human 40S Ribosomal subu... -
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Open data
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Basic information
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| Title | Bat MERSr-CoV NL140422 Nsp1 bound to the Human 40S Ribosomal subunit-State1 | |||||||||
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Keywords | 40S / Nsp1 / betacoronaviruses / cryo-EM / RIBOSOME | |||||||||
| Function / homology | Function and homology informationnegative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / positive regulation of ubiquitin-protein transferase activity / protein tyrosine kinase inhibitor activity / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of DNA-templated transcription initiation ...negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / positive regulation of ubiquitin-protein transferase activity / protein tyrosine kinase inhibitor activity / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of DNA-templated transcription initiation / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / nucleolus organization / TNFR1-mediated ceramide production / negative regulation of RNA splicing / neural crest cell differentiation / supercoiled DNA binding / cytoplasmic translational initiation / NF-kappaB complex / negative regulation of DNA repair / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / rRNA modification in the nucleus and cytosol / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of bicellular tight junction assembly / ubiquitin-like protein conjugating enzyme binding / regulation of establishment of cell polarity / negative regulation of phagocytosis / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / Formation of the ternary complex, and subsequently, the 43S complex / ion channel inhibitor activity / protein kinase A binding / laminin receptor activity / pigmentation / Ribosomal scanning and start codon recognition / positive regulation of mitochondrial depolarization / Translation initiation complex formation / negative regulation of Wnt signaling pathway / fibroblast growth factor binding / Protein hydroxylation / BH3 domain binding / monocyte chemotaxis / negative regulation of translational frameshifting / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / TOR signaling / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / positive regulation of GTPase activity / iron-sulfur cluster binding / host cell membrane / regulation of cell division / cellular response to ethanol / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / negative regulation of protein binding / protein serine/threonine kinase inhibitor activity / 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 / negative regulation of respiratory burst involved in inflammatory response / ubiquitin ligase inhibitor activity / Viral mRNA Translation / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / negative regulation of ubiquitin-dependent protein catabolic process / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / positive regulation of signal transduction by p53 class mediator / 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 / positive regulation of microtubule polymerization / phagocytic cup / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / spindle assembly / positive regulation of intrinsic apoptotic signaling pathway / Protein methylation / 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) / Nuclear events stimulated by ALK signaling in cancer / translation regulator activity / rough endoplasmic reticulum / positive regulation of cell cycle / laminin binding / ribosomal small subunit export from nucleus / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / translation initiation factor binding / DNA-(apurinic or apyrimidinic site) endonuclease activity / gastrulation / signaling adaptor activity / Maturation of protein E / negative regulation of protein ubiquitination / Maturation of protein E / MDM2/MDM4 family protein binding / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / Mitotic Prometaphase / FLT3 signaling by CBL mutants / liver regeneration Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) / ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.78 Å | |||||||||
Authors | Yuan S / Yan R / Wu M | |||||||||
| Funding support | China, 1 items
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Citation | Journal: Nucleic Acids Res / Year: 2026Title: Strategic variations in sarbecovirus and merbecovirus Nsp1 linker regions for translation inhibition. Authors: Ruixi Yan / Mingbo Wu / Xiangyu Ge / Qianqian Jin / Moyu Wang / Haolong Zhou / Yan Li / Yue Wang / Shuai Yuan / ![]() Abstract: Nonstructural protein 1 (Nsp1) is a key virulence factor of coronaviruses, and its stable binding to the 40S ribosomal mRNA entry channel facilitates multiple functions, including suppression of host ...Nonstructural protein 1 (Nsp1) is a key virulence factor of coronaviruses, and its stable binding to the 40S ribosomal mRNA entry channel facilitates multiple functions, including suppression of host immune responses and degradation of host mRNA. To understand the structural basis of the conserved protein across viral lineages, we determined the cryo-EM structures of Nsp1-40S complexes of four coronaviruses from wild animals. Our results show that all Nsp1 proteins engage the mRNA entry channel via their C-terminal domain (CTD), but do not fully restrict the rotational mobility of the 40S head, which retains ∼5° of movement and repositions the Nsp1 linker region. Comparative analysis revealed distinct patterns in the linker regions connecting the N- and CTDs. Sarbecovirus Nsp1 contains a longer linker, whereas the merbecovirus Nsp1 adopts a shorter linker that navigates structural constraints more readily. Functionally, we find that linker length correlates with translation inhibition efficiency, suggesting a structural tuning mechanism. Additionally, variations in linker and helix 1 of the CTD among different lineages may serve as molecular markers for viral classification. Together, our results provide a comparative structural framework for understanding how coronavirus Nsp1 proteins modulate host translation and reflect evolutionary adaptations in ribosome engagement. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_62450.map.gz | 483.3 MB | EMDB map data format | |
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| Header (meta data) | emd-62450-v30.xml emd-62450.xml | 60.6 KB 60.6 KB | Display Display | EMDB header |
| Images | emd_62450.png | 66.2 KB | ||
| Filedesc metadata | emd-62450.cif.gz | 12 KB | ||
| Others | emd_62450_half_map_1.map.gz emd_62450_half_map_2.map.gz | 475.7 MB 475.7 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-62450 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-62450 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9kmzMC ![]() 9kmtC ![]() 9kmuC ![]() 9kmvC ![]() 9kmwC ![]() 9kmxC ![]() 9kmyC ![]() 9kn0C 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_62450.map.gz / Format: CCP4 / Size: 512 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: 0.95 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Half map: #2
| File | emd_62450_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #1
| File | emd_62450_half_map_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : The complex of Bat MERSr-CoV NL140422 Nsp1 and Human 40S Ribosoma...
+Supramolecule #1: The complex of Bat MERSr-CoV NL140422 Nsp1 and Human 40S Ribosoma...
+Macromolecule #1: 18S ribosomal RNA
+Macromolecule #2: Small ribosomal subunit protein uS2
+Macromolecule #3: Small ribosomal subunit protein eS1
+Macromolecule #4: Small ribosomal subunit protein uS5
+Macromolecule #5: Small ribosomal subunit protein uS3
+Macromolecule #6: Small ribosomal subunit protein eS4, X isoform
+Macromolecule #7: Small ribosomal subunit protein uS7
+Macromolecule #8: Small ribosomal subunit protein eS6
+Macromolecule #9: Small ribosomal subunit protein eS7
+Macromolecule #10: Small ribosomal subunit protein eS8
+Macromolecule #11: Small ribosomal subunit protein uS4
+Macromolecule #12: Small ribosomal subunit protein eS10
+Macromolecule #13: Small ribosomal subunit protein uS17
+Macromolecule #14: Small ribosomal subunit protein eS12
+Macromolecule #15: Small ribosomal subunit protein uS15
+Macromolecule #16: Small ribosomal subunit protein uS11
+Macromolecule #17: Small ribosomal subunit protein uS19
+Macromolecule #18: Small ribosomal subunit protein uS9
+Macromolecule #19: Small ribosomal subunit protein eS17
+Macromolecule #20: Small ribosomal subunit protein uS13
+Macromolecule #21: Small ribosomal subunit protein eS19
+Macromolecule #22: Small ribosomal subunit protein uS10
+Macromolecule #23: Small ribosomal subunit protein eS21
+Macromolecule #24: Small ribosomal subunit protein uS8
+Macromolecule #25: Small ribosomal subunit protein uS12
+Macromolecule #26: Small ribosomal subunit protein eS24
+Macromolecule #27: Small ribosomal subunit protein eS25
+Macromolecule #28: Small ribosomal subunit protein eS26
+Macromolecule #29: Small ribosomal subunit protein eS27
+Macromolecule #30: Small ribosomal subunit protein eS28
+Macromolecule #31: Small ribosomal subunit protein uS14
+Macromolecule #32: Small ribosomal subunit protein eS30
+Macromolecule #33: Small ribosomal subunit protein eS31
+Macromolecule #34: Small ribosomal subunit protein RACK1
+Macromolecule #35: Small ribosomal subunit protein eS32
+Macromolecule #36: ORF1ab polyprotein
-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: 8 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | JEOL CRYO ARM 300 |
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 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: 1.0 µm |
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About Yorodumi



Keywords
Homo sapiens (human)
Authors
China, 1 items
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Y (Row.)
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Processing
FIELD EMISSION GUN