+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-2644 | |||||||||
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Title | Structure of the mammalian ribosome-Sec61 complex | |||||||||
Map data | Mammalian ribosome in complex with Sec61. Translating active class with mRNA and hybrid tRNAs | |||||||||
Sample |
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Keywords | translation / ribosome / mammalian / sec61 | |||||||||
Function / homology | Function and homology information Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / regulation of cell cycle => GO:0051726 / regulation of cell cycle => GO:0051726 / TNFR1-mediated ceramide production / Translation initiation complex formation / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / Regulation of TNFR1 signaling / TNFR1-induced NF-kappa-B signaling pathway / : ...Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / regulation of cell cycle => GO:0051726 / regulation of cell cycle => GO:0051726 / TNFR1-mediated ceramide production / Translation initiation complex formation / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / Regulation of TNFR1 signaling / TNFR1-induced NF-kappa-B signaling pathway / : / L13a-mediated translational silencing of Ceruloplasmin expression / SRP-dependent cotranslational protein targeting to membrane / Major pathway of rRNA processing in the nucleolus and cytosol / Formation of a pool of free 40S subunits / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / pronephric nephron development / Sec61 translocon complex / protein-transporting ATPase activity / protein insertion into ER membrane / malate dehydrogenase / L-malate dehydrogenase (NAD+) activity / SRP-dependent cotranslational protein targeting to membrane, translocation / translation at presynapse / ribosomal subunit / embryonic brain development / protein tyrosine kinase inhibitor activity / positive regulation of gastrulation / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / signal sequence binding / carboxylic acid metabolic process / post-translational protein targeting to membrane, translocation / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Separation of Sister Chromatids / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / RHO GTPases Activate Formins / neural crest cell differentiation / regulation of establishment of cell polarity / negative regulation of phagocytosis / alpha-beta T cell differentiation / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / regulation of translation involved in cellular response to UV / protein-DNA complex disassembly / positive regulation of DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator / positive regulation of mitochondrial depolarization / organelle membrane / negative regulation of peptidyl-serine phosphorylation / negative regulation of Wnt signaling pathway / regulation of cell division / BH3 domain binding / cysteine-type endopeptidase activator activity involved in apoptotic process / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / positive regulation of signal transduction by p53 class mediator / ubiquitin ligase inhibitor activity / phagocytic cup / protein transmembrane transporter activity / protein localization to nucleus / negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / protein targeting / protein-RNA complex assembly / cellular response to actinomycin D / negative regulation of ubiquitin-dependent protein catabolic process / membrane => GO:0016020 / positive regulation of intrinsic apoptotic signaling pathway / translation regulator activity / signaling adaptor activity / laminin binding / negative regulation of smoothened signaling pathway / 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) / gastrulation / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / tricarboxylic acid cycle / maturation of LSU-rRNA / DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest / cytosolic ribosome / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / cyclin binding / SH2 domain binding / rescue of stalled ribosome / ribosomal large subunit biogenesis / positive regulation of GTPase activity / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / innate immune response in mucosa / positive regulation of translation / neural tube closure / small-subunit processome / mRNA 3'-UTR binding / cellular response to glucose stimulus Similarity search - Function | |||||||||
Biological species | Sus scrofa domesticus (domestic pig) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
Authors | Voorhees RM / Fernandez IS / Scheres SHW / Hegde R | |||||||||
Citation | Journal: Cell / Year: 2014 Title: Structure of the mammalian ribosome-Sec61 complex to 3.4 Å resolution. Authors: Rebecca M Voorhees / Israel S Fernández / Sjors H W Scheres / Ramanujan S Hegde / Abstract: Cotranslational protein translocation is a universally conserved process for secretory and membrane protein biosynthesis. Nascent polypeptides emerging from a translating ribosome are either ...Cotranslational protein translocation is a universally conserved process for secretory and membrane protein biosynthesis. Nascent polypeptides emerging from a translating ribosome are either transported across or inserted into the membrane via the ribosome-bound Sec61 channel. Here, we report structures of a mammalian ribosome-Sec61 complex in both idle and translating states, determined to 3.4 and 3.9 Å resolution. The data sets permit building of a near-complete atomic model of the mammalian ribosome, visualization of A/P and P/E hybrid-state tRNAs, and analysis of a nascent polypeptide in the exit tunnel. Unprecedented chemical detail is observed for both the ribosome-Sec61 interaction and the conformational state of Sec61 upon ribosome binding. Comparison of the maps from idle and translating complexes suggests how conformational changes to the Sec61 channel could facilitate translocation of a secreted polypeptide. The high-resolution structure of the mammalian ribosome-Sec61 complex provides a valuable reference for future functional and structural studies. | |||||||||
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_2644.map.gz | 32.3 MB | EMDB map data format | |
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Header (meta data) | emd-2644-v30.xml emd-2644.xml | 8.5 KB 8.5 KB | Display Display | EMDB header |
Images | EMD-2644.png | 1.6 MB | ||
Others | emdb_2644_half_map_1.map.gz emdb_2644_half_map_2.map.gz | 210.4 MB 210.4 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-2644 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-2644 | HTTPS FTP |
-Validation report
Summary document | emd_2644_validation.pdf.gz | 322.3 KB | Display | EMDB validaton report |
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Full document | emd_2644_full_validation.pdf.gz | 321.9 KB | Display | |
Data in XML | emd_2644_validation.xml.gz | 7.3 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-2644 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-2644 | HTTPS FTP |
-Related structure data
Related structure data | 3j7rMC 2646C 2649C 2650C 3j7oC 3j7pC 3j7qC 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_2644.map.gz / Format: CCP4 / Size: 276 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Mammalian ribosome in complex with Sec61. Translating active class with mRNA and hybrid tRNAs | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.34 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Supplemental map: emdb 2644 half map 1.map
File | emdb_2644_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Supplemental map: emdb 2644 half map 2.map
File | emdb_2644_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
-Entire : Mammalian ribosome in complex with Sec61 with the large subunit (...
Entire | Name: Mammalian ribosome in complex with Sec61 with the large subunit (60S) masked during processing. |
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Components |
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-Supramolecule #1000: Mammalian ribosome in complex with Sec61 with the large subunit (...
Supramolecule | Name: Mammalian ribosome in complex with Sec61 with the large subunit (60S) masked during processing. type: sample / ID: 1000 / Number unique components: 2 |
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-Supramolecule #1: Mammalian ribosome
Supramolecule | Name: Mammalian ribosome / type: complex / ID: 1 / Recombinant expression: No / Ribosome-details: ribosome-eukaryote: ALL |
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Source (natural) | Organism: Sus scrofa domesticus (domestic pig) / synonym: domestic pig / Tissue: pancreas |
-Macromolecule #1: Sec61
Macromolecule | Name: Sec61 / type: protein_or_peptide / ID: 1 / Recombinant expression: No |
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Source (natural) | Organism: Sus scrofa domesticus (domestic pig) / synonym: domestic pig |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 Details: 50mM hepes, 200mM K-acetate, 15mM Mg-acetate, 1mM DTT |
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Grid | Details: Quantifoil R2/2 400 mesh copper grids. |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 90 % / Chamber temperature: 120 K / Instrument: FEI VITROBOT MARK IV Method: 3uL of sampled was incubated on the grid for 30 seconds before blotting for 9 second |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Date | Apr 7, 2014 |
Image recording | Category: CCD / Film or detector model: FEI FALCON II (4k x 4k) / Number real images: 1900 / Average electron dose: 25 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD / Nominal defocus max: 0.003 µm / Nominal defocus min: 0.001 µm / Nominal magnification: 47000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
CTF correction | Details: Each particle |
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Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: OTHER / Software - Name: Relion / Number images used: 80019 |