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- PDB-9krp: Structure of the HCV IRES-dependent 48S translation initiation co... -

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Basic information

Entry
Database: PDB / ID: 9krp
TitleStructure of the HCV IRES-dependent 48S translation initiation complex with eIF5B and eIF3
Components
  • (40S ribosomal protein ...) x 30
  • (Eukaryotic translation initiation factor 3 subunit ...) x 9
  • 18S rRNA
  • 60S ribosomal protein L41
  • Eukaryotic translation initiation factor 5B
  • HCV IRES
  • Initiator Met-tRNA-i
  • Receptor of activated protein C kinase 1
  • Small ribosomal subunit protein uS2
  • Ubiquitin-40S ribosomal protein S27a
KeywordsRIBOSOME / HCV IRES
Function / homology
Function and homology information


viral translational termination-reinitiation / eukaryotic translation initiation factor 3 complex, eIF3e / cap-dependent translational initiation / eukaryotic translation initiation factor 3 complex, eIF3m / IRES-dependent viral translational initiation / translation reinitiation / formation of cytoplasmic translation initiation complex / multi-eIF complex / eukaryotic translation initiation factor 3 complex / eukaryotic 43S preinitiation complex ...viral translational termination-reinitiation / eukaryotic translation initiation factor 3 complex, eIF3e / cap-dependent translational initiation / eukaryotic translation initiation factor 3 complex, eIF3m / IRES-dependent viral translational initiation / translation reinitiation / formation of cytoplasmic translation initiation complex / multi-eIF complex / eukaryotic translation initiation factor 3 complex / eukaryotic 43S preinitiation complex / mRNA cap binding / eukaryotic 48S preinitiation complex / 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 ubiquitin-protein transferase activity / regulation of translational initiation / positive regulation of respiratory burst involved in inflammatory response / protein-synthesizing GTPase / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / positive regulation of DNA-templated transcription initiation / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / nucleolus organization / TNFR1-mediated ceramide production / negative regulation of RNA splicing / metal-dependent deubiquitinase activity / 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 / Ribosomal scanning and start codon recognition / pigmentation / positive regulation of mitochondrial depolarization / Translation initiation complex formation / negative regulation of Wnt signaling pathway / fibroblast growth factor binding / Protein hydroxylation / monocyte chemotaxis / BH3 domain binding / negative regulation of translational frameshifting / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / SARS-CoV-1 modulates host translation machinery / positive regulation of GTPase activity / TOR signaling / mTORC1-mediated signalling / iron-sulfur cluster binding / Peptide chain elongation / regulation of cell division / cellular response to ethanol / Selenocysteine synthesis / Formation of a pool of free 40S subunits / negative regulation of protein binding / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Eukaryotic Translation Termination / protein serine/threonine kinase inhibitor activity / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / ubiquitin ligase inhibitor activity / negative regulation of respiratory burst involved in inflammatory response / Viral mRNA Translation / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / positive regulation of signal transduction by p53 class mediator / negative regulation of ubiquitin-dependent protein catabolic process / 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) / translation regulator activity / Nuclear events stimulated by ALK signaling in cancer / rough endoplasmic reticulum / ribosomal small subunit export from nucleus / positive regulation of cell cycle
Similarity search - Function
Elongation factor Tu-type domain / Elongation factor Tu domain 4 / Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit 7 (eIF-3) / Eukaryotic translation initiation factor 3 subunit H / eIF3h, C-terminal / C-terminal region of eIF3h / Eukaryotic translation initiation factor 3 subunit F / Translation initiation factor 3 complex subunit L / RNA polymerase I-associated factor PAF67 ...Elongation factor Tu-type domain / Elongation factor Tu domain 4 / Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit 7 (eIF-3) / Eukaryotic translation initiation factor 3 subunit H / eIF3h, C-terminal / C-terminal region of eIF3h / Eukaryotic translation initiation factor 3 subunit F / Translation initiation factor 3 complex subunit L / RNA polymerase I-associated factor PAF67 / Eukaryotic translation initiation factor 3 subunit M / eIF3 subunit M, C-terminal helix domain / : / eIF3 subunit 6 N terminal domain / eIF3 subunit M, C-terminal helix / Eukaryotic translation initiation factor 3 subunit E, C-terminal / EIF3CL-like, C-terminal domain / Eukaryotic translation initiation factor 3 subunit E / Eukaryotic translation initiation factor 3 subunit E, N-terminal / eIF3 subunit 6 N terminal domain / Eukaryotic translation initiation factor 3 subunit K / Translation initiation factor 3, subunit 12, N-terminal, eukaryotic / : / eIF3a, PCI domain, TPR-like region / Eukaryotic translation initiation factor 3 subunit A / Eukaryotic translation initiation factor 3 subunit C, N-terminal domain / Eukaryotic translation initiation factor 3 subunit C / Eukaryotic translation initiation factor 3 subunit 8 N-terminus / Translation initiation factor IF- 2, domain 3 / Translation-initiation factor 2 / Eukaryotic translation initiation factor 3 subunit M eIF3m/COP9 signalosome complex subunit 7 COPS7 / Translation initiation factor IF- 2 / Translation initiation factor IF-2, domain 3 superfamily / CSN8/PSMD8/EIF3K / CSN8/PSMD8/EIF3K family / Rpn11/EIF3F, C-terminal / Maintenance of mitochondrial structure and function / : / motif in proteasome subunits, Int-6, Nip-1 and TRIP-15 / PCI domain / Proteasome component (PCI) domain / PCI domain profile. / 40S ribosomal protein SA / 40S ribosomal protein SA, C-terminal domain / 40S ribosomal protein SA C-terminus / Ubiquitin-like protein FUBI / JAB1/Mov34/MPN/PAD-1 ubiquitin protease / : / Ribosomal protein S26e signature. / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / : / Ribosomal protein S12e signature. / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / Ribosomal protein S12e / Small (40S) ribosomal subunit Asc1/RACK1 / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein S21e / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Ribosomal protein S2, eukaryotic / 40S Ribosomal protein S10 / S27a-like superfamily / Plectin/S10, N-terminal / Plectin/S10 domain / JAB/MPN domain / JAB1/MPN/MOV34 metalloenzyme domain / Ribosomal protein S30 / Ribosomal protein S30 / Ribosomal protein S10, eukaryotic/archaeal / Ribosomal protein S25 / Ribosomal protein S8e subdomain, eukaryotes / S25 ribosomal protein / : / Ribosomal protein S7e signature. / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S17e, conserved site / Ribosomal protein S17e signature. / Ribosomal protein S2, eukaryotic/archaeal / Ribosomal protein S3Ae, conserved site / Ribosomal protein S3Ae signature. / 40S ribosomal protein S29/30S ribosomal protein S14 type Z / Ribosomal protein S3, eukaryotic/archaeal / MPN domain / MPN domain profile. / 40S ribosomal protein S4, C-terminal domain / 40S ribosomal protein S4 C-terminus / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal protein S4e signature. / Ribosomal protein S8e, conserved site / Ribosomal protein S8e signature. / Ribosomal protein S19A/S15e
Similarity search - Domain/homology
GUANOSINE-5'-TRIPHOSPHATE / : / : / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Eukaryotic translation initiation factor 3 subunit F / Eukaryotic translation initiation factor 3 subunit D ...GUANOSINE-5'-TRIPHOSPHATE / : / : / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Eukaryotic translation initiation factor 3 subunit F / Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit H / Eukaryotic translation initiation factor 5B / Small ribosomal subunit protein eS17 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein eS12 / Small ribosomal subunit protein eS19 / Small ribosomal subunit protein eS27 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein eS10 / Eukaryotic translation initiation factor 3 subunit E / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein eS1 / 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 / Small ribosomal subunit protein eS4, X isoform / Small ribosomal subunit protein eS6 / 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 / Small ribosomal subunit protein eS32 / Ubiquitin-ribosomal protein eS31 fusion protein / Small ribosomal subunit protein eS21 / Small ribosomal subunit protein RACK1 / Eukaryotic translation initiation factor 3 subunit A / Eukaryotic translation initiation factor 3 subunit M / Eukaryotic translation initiation factor 3 subunit C / Eukaryotic translation initiation factor 3 subunit K / Eukaryotic translation initiation factor 3 subunit L
Similarity search - Component
Biological speciesHomo sapiens (human)
Hepacivirus hominis
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsIwasaki, W. / Kashiwagi, K. / Sakamoto, A. / Nishimoto, M. / Takahashi, M. / Machida, K. / Imataka, H. / Matsumoto, A. / Shichino, Y. / Iwasaki, S. ...Iwasaki, W. / Kashiwagi, K. / Sakamoto, A. / Nishimoto, M. / Takahashi, M. / Machida, K. / Imataka, H. / Matsumoto, A. / Shichino, Y. / Iwasaki, S. / Imami, K. / Ito, T.
Funding support Japan, 2items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)19K06533 Japan
Japan Society for the Promotion of Science (JSPS)23K05673 Japan
CitationJournal: Proc Natl Acad Sci U S A / Year: 2025
Title: Structural insights into the role of eIF3 in translation mediated by the HCV IRES.
Authors: Wakana Iwasaki / Kazuhiro Kashiwagi / Ayako Sakamoto / Madoka Nishimoto / Mari Takahashi / Kodai Machida / Hiroaki Imataka / Akinobu Matsumoto / Yuichi Shichino / Shintaro Iwasaki / Koshi Imami / Takuhiro Ito /
Abstract: The genomes of various RNA viruses and a subset of human genes contain structured RNA elements termed internal ribosomal entry sites (IRESs) to initiate translation in a cap-independent manner. The ...The genomes of various RNA viruses and a subset of human genes contain structured RNA elements termed internal ribosomal entry sites (IRESs) to initiate translation in a cap-independent manner. The well-studied IRES from Hepatitis C virus (HCV) binds to eukaryotic initiation factor 3 (eIF3), but how the HCV IRES harnesses eIF3 for viral translation remains unclear. Here, we determined multiple cryo-EM structures in which the HCV IRES binds simultaneously to the ribosome and eIF3, covering steps from initiation to elongation. The eIF3 core subunits are displaced from the ribosome by binding more tightly to subdomain IIIb of the HCV IRES. However, cross-linking mass spectrometry suggested that the eIF3 noncore subunits in the HCV-IRES-mediated elongation complex remain in similar positions on the ribosome to those observed in the cap-mediated initiation complex. This currently determined configuration of eIF3 core and noncore subunits reveals the mechanisms through which the HCV IRES overcomes the competition with the host mRNA and promotes viral mRNA translation by utilizing eIF3. Interestingly, cryo-EM structures also revealed that the N-terminal domain of the eIF3 c-subunit (eIF3c-NTD) binds to the large ribosomal subunit (60S) during elongation. These findings suggest that eIF3 contributes to HCV IRES-mediated translation not only during initiation but also elongation and potentially in reinitiation. The interaction between the eIF3c-NTD and the 60S ribosome is likely to occur in general translation processes as well, contributing to 60S joining or eIF3 stabilization on the elongating ribosome.
History
DepositionNov 28, 2024Deposition site: PDBJ / Processing site: PDBJ
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
SA: Small ribosomal subunit protein uS2
SB: 40S ribosomal protein S3a
SC: 40S ribosomal protein S2
SD: 40S ribosomal protein S3
SE: 40S ribosomal protein S4, X isoform
SF: 40S ribosomal protein S5
SG: 40S ribosomal protein S6
SH: 40S ribosomal protein S7
SI: 40S ribosomal protein S8
SJ: 40S ribosomal protein S9
SK: 40S ribosomal protein S10
SL: 40S ribosomal protein S11
Sf: 40S ribosomal protein S12
SN: 40S ribosomal protein S13
SO: 40S ribosomal protein S14
SP: 40S ribosomal protein S15
SQ: 40S ribosomal protein S16
SR: 40S ribosomal protein S17
SS: 40S ribosomal protein S18
ST: 40S ribosomal protein S19
SU: 40S ribosomal protein S20
SV: 40S ribosomal protein S21
SW: 40S ribosomal protein S15a
SX: 40S ribosomal protein S23
SY: 40S ribosomal protein S24
SZ: 40S ribosomal protein S25
Sa: 40S ribosomal protein S26
Sb: 40S ribosomal protein S27
Sc: 40S ribosomal protein S28
Sd: 40S ribosomal protein S29
Se: 40S ribosomal protein S30
sh: Ubiquitin-40S ribosomal protein S27a
Sg: Receptor of activated protein C kinase 1
zy: Initiator Met-tRNA-i
Ln: 60S ribosomal protein L41
S2: 18S rRNA
zz: HCV IRES
5B: Eukaryotic translation initiation factor 5B
3m: Eukaryotic translation initiation factor 3 subunit M
3f: Eukaryotic translation initiation factor 3 subunit F
3a: Eukaryotic translation initiation factor 3 subunit A
3e: Eukaryotic translation initiation factor 3 subunit E
3c: Eukaryotic translation initiation factor 3 subunit C
3h: Eukaryotic translation initiation factor 3 subunit H
3d: Eukaryotic translation initiation factor 3 subunit D
3k: Eukaryotic translation initiation factor 3 subunit K
3l: Eukaryotic translation initiation factor 3 subunit L
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,028,42559
Polymers2,027,55347
Non-polymers87312
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 4 types, 4 molecules SAshSg5B

#1: Protein Small ribosomal subunit protein uS2 / 37 kDa laminin receptor precursor / 37LRP / 37/67 kDa laminin receptor / LRP/LR / 40S ribosomal ...37 kDa laminin receptor precursor / 37LRP / 37/67 kDa laminin receptor / LRP/LR / 40S ribosomal protein SA / 67 kDa laminin receptor / 67LR / Colon carcinoma laminin-binding protein / Laminin receptor 1 / LamR / Laminin-binding protein precursor p40 / LBP/p40 / Multidrug resistance-associated protein MGr1-Ag / NEM/1CHD4


Mass: 32883.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P08865
#32: Protein Ubiquitin-40S ribosomal protein S27a / Ubiquitin carboxyl extension protein 80


Mass: 18004.041 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62979
#33: Protein Receptor of activated protein C kinase 1 / Cell proliferation-inducing gene 21 protein / Guanine nucleotide-binding protein subunit beta-2- ...Cell proliferation-inducing gene 21 protein / Guanine nucleotide-binding protein subunit beta-2-like 1 / Guanine nucleotide-binding protein subunit beta-like protein 12.3 / Human lung cancer oncogene 7 protein / HLC-7 / Receptor for activated C kinase / Small ribosomal subunit protein RACK1


Mass: 35115.652 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63244
#38: Protein Eukaryotic translation initiation factor 5B / eIF-5B / Translation initiation factor IF-2


Mass: 70093.391 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EIF5B, IF2, KIAA0741 / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: O60841, protein-synthesizing GTPase

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40S ribosomal protein ... , 30 types, 30 molecules SBSCSDSESFSGSHSISJSKSLSfSNSOSPSQSRSSSTSUSVSWSXSYSZSaSbScSdSe

#2: Protein 40S ribosomal protein S3a / Small ribosomal subunit protein eS1 / v-fos transformation effector protein / Fte-1


Mass: 30002.061 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61247
#3: Protein 40S ribosomal protein S2 / 40S ribosomal protein S4 / Protein LLRep3 / Small ribosomal subunit protein uS5


Mass: 31376.516 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P15880
#4: Protein 40S ribosomal protein S3 / Small ribosomal subunit protein uS3


Mass: 26729.369 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: P23396, DNA-(apurinic or apyrimidinic site) lyase
#5: Protein 40S ribosomal protein S4, X isoform / SCR10 / Single copy abundant mRNA protein / Small ribosomal subunit protein eS4


Mass: 29654.869 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62701
#6: Protein 40S ribosomal protein S5 / Small ribosomal subunit protein uS7


Mass: 22913.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46782
#7: Protein 40S ribosomal protein S6 / Phosphoprotein NP33 / Small ribosomal subunit protein eS6


Mass: 28751.906 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62753
#8: Protein 40S ribosomal protein S7 / Small ribosomal subunit protein eS7


Mass: 22168.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62081
#9: Protein 40S ribosomal protein S8 / Small ribosomal subunit protein eS8


Mass: 24263.387 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62241
#10: Protein 40S ribosomal protein S9 / Small ribosomal subunit protein uS4


Mass: 22641.564 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46781
#11: Protein 40S ribosomal protein S10 / Small ribosomal subunit protein eS10


Mass: 18933.846 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46783
#12: Protein 40S ribosomal protein S11 / Small ribosomal subunit protein uS17


Mass: 18468.826 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62280
#13: Protein 40S ribosomal protein S12 / Small ribosomal subunit protein eS12


Mass: 14538.987 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25398
#14: Protein 40S ribosomal protein S13 / Small ribosomal subunit protein uS15


Mass: 17259.389 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62277
#15: Protein 40S ribosomal protein S14 / Small ribosomal subunit protein uS11


Mass: 16302.772 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62263
#16: Protein 40S ribosomal protein S15 / RIG protein / Small ribosomal subunit protein uS19


Mass: 17076.207 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62841
#17: Protein 40S ribosomal protein S16 / Small ribosomal subunit protein uS9


Mass: 16477.377 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62249
#18: Protein 40S ribosomal protein S17 / Small ribosomal subunit protein eS17


Mass: 15578.156 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P08708
#19: Protein 40S ribosomal protein S18 / Ke-3 / Ke3 / Small ribosomal subunit protein uS13


Mass: 17759.777 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62269
#20: Protein 40S ribosomal protein S19 / Small ribosomal subunit protein eS19


Mass: 16091.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P39019
#21: Protein 40S ribosomal protein S20 / Small ribosomal subunit protein uS10


Mass: 13398.763 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60866
#22: Protein 40S ribosomal protein S21 / Small ribosomal subunit protein eS21


Mass: 9124.389 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63220
#23: Protein 40S ribosomal protein S15a / Small ribosomal subunit protein uS8


Mass: 14865.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62244
#24: Protein 40S ribosomal protein S23 / Small ribosomal subunit protein uS12


Mass: 15844.666 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62266
#25: Protein 40S ribosomal protein S24 / Small ribosomal subunit protein eS24


Mass: 15463.333 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62847
#26: Protein 40S ribosomal protein S25 / Small ribosomal subunit protein eS25


Mass: 13776.224 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62851
#27: Protein 40S ribosomal protein S26 / Small ribosomal subunit protein eS26


Mass: 13047.532 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62854
#28: Protein 40S ribosomal protein S27 / Metallopan-stimulin 1 / MPS-1 / Small ribosomal subunit protein eS27


Mass: 9480.186 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P42677
#29: Protein 40S ribosomal protein S28 / Small ribosomal subunit protein eS28


Mass: 7855.052 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62857
#30: Protein 40S ribosomal protein S29 / Small ribosomal subunit protein uS14


Mass: 6690.821 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62273
#31: Protein 40S ribosomal protein S30 / Small ribosomal subunit protein eS30


Mass: 6668.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62861

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RNA chain , 3 types, 3 molecules zyS2zz

#34: RNA chain Initiator Met-tRNA-i


Mass: 24231.510 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 174924
#36: RNA chain 18S rRNA


Mass: 602777.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 2795772166
#37: RNA chain HCV IRES


Mass: 107002.117 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Hepacivirus hominis / References: GenBank: 221513

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Protein/peptide , 1 types, 1 molecules Ln

#35: Protein/peptide 60S ribosomal protein L41 / HG12 / Large ribosomal subunit protein eL41


Mass: 3473.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62945

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Eukaryotic translation initiation factor 3 subunit ... , 9 types, 9 molecules 3m3f3a3e3c3h3d3k3l

#39: Protein Eukaryotic translation initiation factor 3 subunit M / eIF3m / Fetal lung protein B5 / hFL-B5 / PCI domain-containing protein 1


Mass: 42555.832 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q7L2H7
#40: Protein Eukaryotic translation initiation factor 3 subunit F / eIF3f / Deubiquitinating enzyme eIF3f / Eukaryotic translation initiation factor 3 subunit 5 / eIF- ...eIF3f / Deubiquitinating enzyme eIF3f / Eukaryotic translation initiation factor 3 subunit 5 / eIF-3-epsilon / eIF3 p47


Mass: 37593.645 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O00303, ubiquitinyl hydrolase 1
#41: Protein Eukaryotic translation initiation factor 3 subunit A / eIF3a / Eukaryotic translation initiation factor 3 subunit 10 / eIF-3-theta / eIF3 p167 / eIF3 p180 ...eIF3a / Eukaryotic translation initiation factor 3 subunit 10 / eIF-3-theta / eIF3 p167 / eIF3 p180 / eIF3 p185


Mass: 166903.781 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q14152
#42: Protein Eukaryotic translation initiation factor 3 subunit E / eIF3e / Eukaryotic translation initiation factor 3 subunit 6 / Viral integration site protein INT-6 ...eIF3e / Eukaryotic translation initiation factor 3 subunit 6 / Viral integration site protein INT-6 homolog / eIF-3 p48


Mass: 52281.633 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60228
#43: Protein Eukaryotic translation initiation factor 3 subunit C / eIF3c / Eukaryotic translation initiation factor 3 subunit 8 / eIF3 p110


Mass: 105503.945 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q99613
#44: Protein Eukaryotic translation initiation factor 3 subunit H / eIF3h / Eukaryotic translation initiation factor 3 subunit 3 / eIF-3-gamma / eIF3 p40 subunit


Mass: 39979.277 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15372
#45: Protein Eukaryotic translation initiation factor 3 subunit D / eIF3d / Eukaryotic translation initiation factor 3 subunit 7 / eIF-3-zeta / eIF3 p66


Mass: 64060.758 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15371
#46: Protein Eukaryotic translation initiation factor 3 subunit K / eIF3k / Eukaryotic translation initiation factor 3 subunit 12 / Muscle-specific gene M9 protein / ...eIF3k / Eukaryotic translation initiation factor 3 subunit 12 / Muscle-specific gene M9 protein / PLAC-24 / eIF-3 p25 / eIF-3 p28


Mass: 25083.619 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UBQ5
#47: Protein Eukaryotic translation initiation factor 3 subunit L / eIF3l / Eukaryotic translation initiation factor 3 subunit 6-interacting protein / Eukaryotic ...eIF3l / Eukaryotic translation initiation factor 3 subunit 6-interacting protein / Eukaryotic translation initiation factor 3 subunit E-interacting protein


Mass: 66803.734 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y262

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Non-polymers , 3 types, 12 molecules

#48: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION
#49: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#50: Chemical ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE


Mass: 523.180 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O14P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: GTP, energy-carrying molecule*YM

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Details

Has ligand of interestY
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1Structure of the HCV IRES-dependent 48S translation initiation complex with eIF5B and eIF3RIBOSOME#1-#470MULTIPLE SOURCES
2ribosomeRIBOSOME#1-#36, #39-#471NATURAL
3HCV IRESCOMPLEX#371SYNTHETIC
4eIF5BCOMPLEX#381RECOMBINANT
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
43Hepacivirus hominis3052230
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 56.2 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.21.2_5419 / Category: model refinement
CTF correctionType: NONE
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 24895 / Symmetry type: POINT
RefinementCross valid method: NONE

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