EMDB-9699: Cryo-EM structure of the CMV-stalled human 80S ribosome (Structure i)

Basic information

• Entry: Database: EMDB / ID: EMD-9699
• Title: Cryo-EM structure of the CMV-stalled human 80S ribosome (Structure i)

Sample

• Complex: Human 80S ribosomeEukaryotic ribosome

Function / homology

Function:

positive regulation of cysteine-type endopeptidase activity involved in execution phase of apoptosis / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / eukaryotic 80S initiation complex / protein tyrosine kinase inhibitor activity / negative regulation of protein neddylation / translation at presynapse / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / axial mesoderm development / regulation of G1 to G0 transition / negative regulation of formation of translation preinitiation complex / IRE1-RACK1-PP2A complex / nucleolus organization / ribosomal protein import into nucleus / 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 / response to extracellular stimulus / positive regulation of endodeoxyribonuclease activity / positive regulation of Golgi to plasma membrane protein transport / exit from mitosis / protein-DNA complex disassembly / TNFR1-mediated ceramide production / 90S preribosome assembly / positive regulation of DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator / negative regulation of DNA repair / negative regulation of RNA splicing / laminin receptor activity / optic nerve development / TORC2 complex binding / oxidized purine DNA binding / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / supercoiled DNA binding / GAIT complex / G1 to G0 transition / neural crest cell differentiation / retinal ganglion cell axon guidance / NF-kappaB complex / rRNA modification in the nucleus and cytosol / negative regulation of phagocytosis / middle ear morphogenesis / ubiquitin-like protein conjugating enzyme binding / regulation of establishment of cell polarity / positive regulation of ubiquitin-protein transferase activity / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / A band / positive regulation of signal transduction by p53 class mediator / ubiquitin ligase inhibitor activity / alpha-beta T cell differentiation / 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 / phagocytic cup / positive regulation of mitochondrial depolarization / response to aldosterone / negative regulation of Wnt signaling pathway / homeostatic process / positive regulation of T cell receptor signaling pathway / lung morphogenesis / macrophage chemotaxis / positive regulation of activated T cell proliferation / fibroblast growth factor binding / regulation of cell division / SARS-CoV-1 modulates host translation machinery / iron-sulfur cluster binding / Protein hydroxylation / male meiosis I / TOR signaling / BH3 domain binding / mTORC1-mediated signalling / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Peptide chain elongation / Selenocysteine synthesis / protein-RNA complex assembly / monocyte chemotaxis / cysteine-type endopeptidase activator activity involved in apoptotic process / Formation of a pool of free 40S subunits / ribosomal small subunit export from nucleus / positive regulation of cyclic-nucleotide phosphodiesterase activity / Eukaryotic Translation Termination / blastocyst development / Response of EIF2AK4 (GCN2) to amino acid deficiency / translation regulator activity / SRP-dependent cotranslational protein targeting to membrane / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Viral mRNA Translation / protein localization to nucleus / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / cellular response to actinomycin D / GTP hydrolysis and joining of the 60S ribosomal subunit / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / negative regulation of respiratory burst involved in inflammatory response

Domain/homology:

Ubiquitin-like protein FUBI / 40S ribosomal protein SA / 40S ribosomal protein SA, C-terminal domain / 40S ribosomal protein SA C-terminus / Ribosomal protein L6, N-terminal / Ribosomal protein L6, N-terminal domain / Ribosomal protein L30e / Ribosomal protein L28e / Ribosomal protein L2, archaeal-type / Ribosomal L15/L27a, N-terminal / Ribosomal protein L23 / Ribosomal L28e/Mak16 / Ribosomal L28e protein family / : / Ribosomal protein S12e / Small (40S) ribosomal subunit Asc1/RACK1 / metallochaperone-like domain / TRASH domain / Ribosomal protein S19e, conserved site / : / S27a-like superfamily / Ribosomal protein S10, eukaryotic/archaeal / Ribosomal protein S25 / Ribosomal protein S26e signature. / Ribosomal protein S17e, conserved site / : / Ribosomal protein S2, eukaryotic / Ribosomal protein S30 / 40S ribosomal protein S29/30S ribosomal protein S14 type Z / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein L29e / Ribosomal protein S3, eukaryotic/archaeal / Ribosomal protein S8e subdomain, eukaryotes / S25 ribosomal protein / Ribosomal protein L10e, conserved site / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / Ribosomal protein L10e / Ribosomal protein L27e, conserved site / Ribosomal protein S19A/S15e / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal L29e protein family / Ribosomal protein S30 / Ribosomal protein S3Ae, conserved site / Ribosomal protein S12e signature. / Ribosomal protein S17e / Ribosomal protein S17e-like superfamily / Ribosomal protein S27a / Ribosomal protein S2, eukaryotic/archaeal / Ribosomal protein S19e / Ribosomal_S19e / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S8e, conserved site / 40S ribosomal protein S11, N-terminal / 40S ribosomal protein S1/3, eukaryotes / Ribosomal protein S6, eukaryotic / Ribosomal protein L24e, conserved site / Ribosomal protein S7e / 40S ribosomal protein S4, C-terminal domain / Ribosomal protein L34e, conserved site / Ribosomal protein L1, conserved site / Eukaryotic Ribosomal Protein L27, KOW domain / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal S17 / Ribosomal protein S19e signature. / Ribosomal protein L44e / Ribosomal protein L38e / Ribosomal protein L38e superfamily / Ribosomal protein L27e / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein L27e superfamily / Ribosomal protein S21e / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal protein S19e / Ribosomal protein S27, zinc-binding domain superfamily / Ribosomal L38e protein family / Ribosomal L22e protein family / Ribosomal protein L23/L25, N-terminal / 40S Ribosomal protein S10 / 60S ribosomal protein L35 / Ribosomal protein L1 / Ribosomal protein S17, archaeal/eukaryotic / Ribosomal protein S27 / Ribosomal protein S28e conserved site / Ribosomal protein S6/S6e/A/B/2, conserved site / Ribosomal protein S28e / Ribosomal protein L35Ae, conserved site / Ribosomal protein L30e, conserved site / 40S ribosomal protein S4 C-terminus / Ribosomal protein S4e, N-terminal / Ribosomal protein S23, eukaryotic/archaeal / Ribosomal_S17 N-terminal / Plectin/S10, N-terminal

Component:

Small ribosomal subunit protein eS17 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS5 / Large ribosomal subunit protein eL33 / Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL22 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein eS12 / Large ribosomal subunit protein eL13 / Large ribosomal subunit protein uL6 / Large ribosomal subunit protein eL22 / Large ribosomal subunit protein uL4 / Small ribosomal subunit protein eS19 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL13 / Small ribosomal subunit protein eS27 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein eL21 / Large ribosomal subunit protein eL28 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein eS10 / Large ribosomal subunit protein eL29 / Large ribosomal subunit protein eL34 / Large ribosomal subunit protein eL14 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein eS1 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein eL15 / Large ribosomal subunit protein eL27 / Large ribosomal subunit protein eL43 / Large ribosomal subunit protein eL37 / Small ribosomal subunit protein eS7 / Small ribosomal subunit protein eS8 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein uS17 / Large ribosomal subunit protein eL8 / Small ribosomal subunit protein eS4, X isoform / Large ribosomal subunit protein uL23 / Small ribosomal subunit protein eS6 / Large ribosomal subunit protein uL14 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein eS24 / Small ribosomal subunit protein eS25 / Small ribosomal subunit protein eS26 / Small ribosomal subunit protein eS28 / Ubiquitin-like FUBI-ribosomal protein eS30 fusion protein / Large ribosomal subunit protein eL30 / Large ribosomal subunit protein eL39 / Large ribosomal subunit protein eL31 / Large ribosomal subunit protein uL1 / Large ribosomal subunit protein eL32 / Large ribosomal subunit protein uL5 / Large ribosomal subunit protein uL2 / Small ribosomal subunit protein eS32 / Ubiquitin-ribosomal protein eS31 fusion protein / Ubiquitin-ribosomal protein eL40 fusion protein / Large ribosomal subunit protein eL38 / Small ribosomal subunit protein eS21 / Small ribosomal subunit protein RACK1 / Large ribosomal subunit protein eL24 / Large ribosomal subunit protein eL42 / Large ribosomal subunit protein eL19 / Large ribosomal subunit protein eL20 / Large ribosomal subunit protein eL6 / Large ribosomal subunit protein eL18 / Ribosomal protein uL16-like / Large ribosomal subunit protein eL36

• Biological species: Homo sapiens (human)
• Method: single particle reconstruction / cryo EM / Resolution: 4.5 Å
• Authors: Yokohama T / Shigematsu H / Shirouzu M / Imataka H / Ito T
• Citation: Journal: Mol Cell / Year: 2019; Title: HCV IRES Captures an Actively Translating 80S Ribosome.; Authors: Takeshi Yokoyama / Kodai Machida / Wakana Iwasaki / Tomoaki Shigeta / Madoka Nishimoto / Mari Takahashi / Ayako Sakamoto / Mayumi Yonemochi / Yoshie Harada / Hideki Shigematsu / Mikako Shirouzu / Hisashi Tadakuma / Hiroaki Imataka / Takuhiro Ito / ; Abstract: Translation initiation of hepatitis C virus (HCV) genomic RNA is induced by an internal ribosome entry site (IRES). Our cryoelectron microscopy (cryo-EM) analysis revealed that the HCV IRES binds to the solvent side of the 40S platform of the cap-dependently translating 80S ribosome. Furthermore, we obtained the cryo-EM structures of the HCV IRES capturing the 40S subunit of the IRES-dependently translating 80S ribosome. In the elucidated structures, the HCV IRES "body," consisting of domain III except for subdomain IIIb, binds to the 40S subunit, while the "long arm," consisting of domain II, remains flexible and does not impede the ongoing translation. Biochemical experiments revealed that the cap-dependently translating ribosome becomes a better substrate for the HCV IRES than the free ribosome. Therefore, the HCV IRES is likely to efficiently induce the translation initiation of its downstream mRNA with the captured translating ribosome as soon as the ongoing translation terminates.

History

Deposition	Nov 2, 2018	-
Header (metadata) release	May 29, 2019	-
Map release	May 29, 2019	-
Update	Jul 3, 2019	-
Current status	Jul 3, 2019	Processing site: PDBj / Status: Released

Map

• File: Download / File: emd_9699.map.gz / Format: CCP4 / Size: 282.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
• Voxel size: X=Y=Z: 1.49 Å

Density

Contour Level	By AUTHOR: 0.0375 / Movie #1: 0.05
Minimum - Maximum	-0.15732701 - 0.25015217
Average (Standard dev.)	0.00030095442 (±0.012908177)

• Symmetry: Space group: 1

Details

EMDB XML:

Map geometry	Axis order X Y Z Origin 0 0 0 Dimensions 420 420 420 Spacing 420 420 420
Cell	A=B=C: 625.8 Å α=β=γ: 90.0 °

CCP4 map header:

mode	Image stored as Reals
Å/pix. X/Y/Z	1.49	1.49	1.49
M x/y/z	420	420	420
origin x/y/z	0.000	0.000	0.000
length x/y/z	625.800	625.800	625.800
α/β/γ	90.000	90.000	90.000
start NX/NY/NZ	-100	-100	-99
NX/NY/NZ	200	200	200
MAP C/R/S	1	2	3
start NC/NR/NS	0	0	0
NC/NR/NS	420	420	420
D min/max/mean	-0.157	0.250	0.000

Supplemental data

Sample components

Entire : Human 80S ribosome

• Entire: Name: Human 80S ribosomeEukaryotic ribosome

Components

• Complex: Human 80S ribosomeEukaryotic ribosome

Supramolecule #1: Human 80S ribosome

• Supramolecule: Name: Human 80S ribosome / type: complex / ID: 1 / Parent: 0
• Source (natural): Organism: Homo sapiens (human)

Experimental details

Structure determination

• Method: cryo EM
• Processing: single particle reconstruction
• Aggregation state: particle

Sample preparation

• Buffer: pH: 7.5
• Grid: Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: CONTINUOUS
• Vitrification: Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

Electron microscopy

• Microscope: FEI TECNAI ARCTICA
• Electron beam: Acceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
• Electron optics: C2 aperture diameter: 50.0 µm / Calibrated magnification: 33557 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal magnification: 23500
• Sample stage: Cooling holder cryogen: NITROGEN
• Image recording: Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 50.0 e/Ų
• Experimental equipment: Model: Talos Arctica / Image courtesy: FEI Company

Image processing

• Initial angle assignment: Type: MAXIMUM LIKELIHOOD
• Final angle assignment: Type: MAXIMUM LIKELIHOOD
• Final reconstruction: Applied symmetry - Point group: C₁ (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 4.5 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 2) / Number images used: 27869