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- PDB-7qp6: Structure of the human 48S initiation complex in open state (h48S... -

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Basic information

Entry
Database: PDB / ID: 7qp6
TitleStructure of the human 48S initiation complex in open state (h48S AUG open)
Components
  • (40S ribosomal protein ...) x 31
  • (Eukaryotic translation initiation factor ...) x 16
  • 18S rRNA
  • 60S ribosomal protein L41
  • Initiator Met-tRNA-i
  • Receptor of activated protein C kinase 1
  • Ubiquitin-40S ribosomal protein S27a
  • mRNA
KeywordsRIBOSOME / 48S / initiation / eIF3 / ternary complex / translation / open state
Function / homology
Function and homology information


male germ cell proliferation / positive regulation of mRNA binding / translation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot / HRI-mediated signaling / response to manganese-induced endoplasmic reticulum stress / viral translational termination-reinitiation / Cellular response to mitochondrial stress / positive regulation of type B pancreatic cell apoptotic process ...male germ cell proliferation / positive regulation of mRNA binding / translation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot / HRI-mediated signaling / response to manganese-induced endoplasmic reticulum stress / viral translational termination-reinitiation / Cellular response to mitochondrial stress / positive regulation of type B pancreatic cell apoptotic process / Response of EIF2AK1 (HRI) to heme deficiency / Recycling of eIF2:GDP / methionyl-initiator methionine tRNA binding / negative regulation of translational initiation in response to stress / eukaryotic translation initiation factor 3 complex, eIF3e / PERK-mediated unfolded protein response / cap-dependent translational initiation / eukaryotic translation initiation factor 3 complex, eIF3m / PERK regulates gene expression / IRES-dependent viral translational initiation / response to kainic acid / translation reinitiation / eukaryotic translation initiation factor 2 complex / formation of cytoplasmic translation initiation complex / eukaryotic translation initiation factor 3 complex / cytoplasmic translational initiation / multi-eIF complex / regulation of translational initiation in response to stress / translation factor activity, RNA binding / eukaryotic 43S preinitiation complex / formation of translation preinitiation complex / mRNA cap binding / eukaryotic 48S preinitiation complex / oxidized pyrimidine DNA binding / response to TNF agonist / negative regulation of endoplasmic reticulum unfolded protein response / positive regulation of base-excision repair / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / positive regulation of endodeoxyribonuclease activity / nucleolus organization / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / protein-synthesizing GTPase / TNFR1-mediated ceramide production / metal-dependent deubiquitinase activity / negative regulation of DNA repair / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / negative regulation of RNA splicing / regulation of translational initiation / supercoiled DNA binding / NF-kappaB complex / neural crest cell differentiation / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / positive regulation of ubiquitin-protein transferase activity / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of bicellular tight junction assembly / regulation of establishment of cell polarity / ubiquitin-like protein conjugating enzyme binding / rRNA modification in the nucleus and cytosol / negative regulation of phagocytosis / erythrocyte homeostasis / Formation of the ternary complex, and subsequently, the 43S complex / cytoplasmic side of rough endoplasmic reticulum membrane / negative regulation of ubiquitin protein ligase activity / protein kinase A binding / laminin receptor activity / ion channel inhibitor activity / Ribosomal scanning and start codon recognition / pigmentation / Translation initiation complex formation / positive regulation of mitochondrial depolarization / positive regulation of T cell receptor signaling pathway / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / monocyte chemotaxis / TOR signaling / negative regulation of translational frameshifting / BH3 domain binding / positive regulation of activated T cell proliferation / Protein hydroxylation / SARS-CoV-1 modulates host translation machinery / iron-sulfur cluster binding / ribosomal small subunit binding / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / regulation of cell division / cellular response to ethanol / mTORC1-mediated signalling / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination / positive regulation of GTPase activity / negative regulation of ubiquitin-dependent protein catabolic process / protein serine/threonine kinase inhibitor activity
Similarity search - Function
Eukaryotic translation initiation factor 3 subunit G / Eukaryotic translation initiation factor 3 subunit G, N-terminal / eIF3G, RNA recognition motif / Eukaryotic translation initiation factor 3 subunit G / Eukaryotic translation initiation factor SUI1 / 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 G / Eukaryotic translation initiation factor 3 subunit G, N-terminal / eIF3G, RNA recognition motif / Eukaryotic translation initiation factor 3 subunit G / Eukaryotic translation initiation factor SUI1 / 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 / Eukaryotic translation initiation factor 3 subunit B / Translation initiation factor 3 complex subunit L / eIF3B, RNA recognition motif / 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 / Translation initiation factor, beta propellor-like domain / Eukaryotic translation initiation factor 3 subunit E / Eukaryotic translation initiation factor 3 subunit E, N-terminal / Eukaryotic translation initiation factor eIF2A / eIF3 subunit 6 N terminal domain / Eukaryotic translation initiation factor 3 subunit K / Translation initiation factor 3, subunit 12, N-terminal, eukaryotic / SUI1 domain superfamily / Translation initiation factor SUI1 / Translation initiation factor SUI1 family profile. / SUI1 domain / : / 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 IF2/IF5 domain / Translation initiation factor IF2/IF5, N-terminal / Translation initiation factor IF2/IF5, zinc-binding / Translation initiation factor IF2/IF5 / Domain found in IF2B/IF5 / domain present in translation initiation factor eIF2B and eIF5 / Eukaryotic translation initiation factor 3 subunit M eIF3m/COP9 signalosome complex subunit 7 COPS7 / Translation initiation factor 1A (eIF-1A), conserved site / Eukaryotic initiation factor 1A signature. / eukaryotic translation initiation factor 1A / Translation initiation factor 1A (eIF-1A) / Initiation factor eIF2 gamma, C-terminal / Initiation factor eIF2 gamma, domain 2 / Initiation factor eIF2 gamma, GTP-binding domain / Initiation factor eIF2 gamma, C terminal / Translation initiation factor 2, alpha subunit / Translation initiation factor 2, alpha subunit, middle domain superfamily / Translation initiation factor 2, alpha subunit, C-terminal / IF2a, S1-like domain / Eukaryotic translation initiation factor 2 alpha subunit / : / RNA-binding domain, S1, IF1 type / Translation initiation factor 1A / IF-1 / S1 domain IF1 type profile. / 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. / Translation elongation factor EF1A/initiation factor IF2gamma, C-terminal / 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 / S1 domain profile. / : / Ribosomal protein S26e signature. / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / : / Ribosomal protein S12e signature. / Ribosomal protein S12e / Translation elongation factor EFTu-like, domain 2 / 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 / S27a-like superfamily / 40S Ribosomal protein S10
Similarity search - Domain/homology
: / 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 3 subunit G / Eukaryotic translation initiation factor 2 subunit 1 ...: / 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 3 subunit G / Eukaryotic translation initiation factor 2 subunit 1 / Small ribosomal subunit protein eS17 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS5 / Eukaryotic translation initiation factor 2 subunit 2 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein eS12 / Small ribosomal subunit protein eS19 / Eukaryotic translation initiation factor 2 subunit 3 / Eukaryotic translation initiation factor 1 / Small ribosomal subunit protein eS27 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein eS10 / Eukaryotic translation initiation factor 1A, X-chromosomal / Eukaryotic translation initiation factor 3 subunit B / 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)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.7 Å
AuthorsYi, S.-H. / Petrychenko, V. / Schliep, J.E. / Goyal, A. / Linden, A. / Chari, A. / Urlaub, H. / Stark, H. / Rodnina, M.V. / Adio, S. / Fischer, N.
Funding support Germany, 2items
OrganizationGrant numberCountry
German Research Foundation (DFG)Leibniz Prize (to M.V.R.) & SFB 860 Germany
Max Planck Society Germany
CitationJournal: Nucleic Acids Res / Year: 2022
Title: Conformational rearrangements upon start codon recognition in human 48S translation initiation complex.
Authors: Sung-Hui Yi / Valentyn Petrychenko / Jan Erik Schliep / Akanksha Goyal / Andreas Linden / Ashwin Chari / Henning Urlaub / Holger Stark / Marina V Rodnina / Sarah Adio / Niels Fischer /
Abstract: Selection of the translation start codon is a key step during protein synthesis in human cells. We obtained cryo-EM structures of human 48S initiation complexes and characterized the intermediates of ...Selection of the translation start codon is a key step during protein synthesis in human cells. We obtained cryo-EM structures of human 48S initiation complexes and characterized the intermediates of codon recognition by kinetic methods using eIF1A as a reporter. Both approaches capture two distinct ribosome populations formed on an mRNA with a cognate AUG codon in the presence of eIF1, eIF1A, eIF2-GTP-Met-tRNAiMet and eIF3. The 'open' 40S subunit conformation differs from the human 48S scanning complex and represents an intermediate preceding the codon recognition step. The 'closed' form is similar to reported structures of complexes from yeast and mammals formed upon codon recognition, except for the orientation of eIF1A, which is unique in our structure. Kinetic experiments show how various initiation factors mediate the population distribution of open and closed conformations until 60S subunit docking. Our results provide insights into the timing and structure of human translation initiation intermediates and suggest the differences in the mechanisms of start codon selection between mammals and yeast.
History
DepositionJan 3, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0May 11, 2022Provider: repository / Type: Initial release
Revision 1.1Jun 1, 2022Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 1.2Apr 24, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / pdbx_initial_refinement_model
Item: _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id ..._em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type
Revision 1.3Oct 23, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
1: Eukaryotic translation initiation factor 3 subunit B
3: Eukaryotic translation initiation factor 3 subunit K
4: Eukaryotic translation initiation factor 3 subunit F
5: Eukaryotic translation initiation factor 3 subunit L
6: Eukaryotic translation initiation factor 3 subunit M
7: mRNA
8: Eukaryotic translation initiation factor 3 subunit H
9: 60S ribosomal protein L41
A: 18S rRNA
B: 40S ribosomal protein S11
C: 40S ribosomal protein S4, X isoform
D: 40S ribosomal protein S9
E: 40S ribosomal protein S23
F: 40S ribosomal protein S30
G: 40S ribosomal protein S7
H: 40S ribosomal protein S27
I: 40S ribosomal protein S13
J: 40S ribosomal protein S15a
K: 40S ribosomal protein S21
L: 40S ribosomal protein S2
M: 40S ribosomal protein S17
N: 40S ribosomal protein SA
O: 40S ribosomal protein S3a
P: 40S ribosomal protein S14
Q: 40S ribosomal protein S26
R: 40S ribosomal protein S8
S: 40S ribosomal protein S6
T: 40S ribosomal protein S24
V: 40S ribosomal protein S5
Y: 40S ribosomal protein S16
Z: 40S ribosomal protein S3
a: 40S ribosomal protein S10
b: 40S ribosomal protein S15
c: Receptor of activated protein C kinase 1
d: 40S ribosomal protein S19
e: 40S ribosomal protein S25
f: 40S ribosomal protein S18
h: 40S ribosomal protein S20
i: 40S ribosomal protein S29
k: Ubiquitin-40S ribosomal protein S27a
m: 40S ribosomal protein S12
n: 40S ribosomal protein S28
o: Eukaryotic translation initiation factor 3 subunit G
p: Eukaryotic translation initiation factor 1
q: Eukaryotic translation initiation factor 1A, X-chromosomal
r: Eukaryotic translation initiation factor 2 subunit 1
s: Eukaryotic translation initiation factor 2 subunit 2
t: Eukaryotic translation initiation factor 2 subunit 3
u: Eukaryotic translation initiation factor 3 subunit A
v: Eukaryotic translation initiation factor 3 subunit E
w: Initiator Met-tRNA-i
x: Eukaryotic translation initiation factor 3 subunit D
y: Eukaryotic translation initiation factor 3 subunit C
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,140,66157
Polymers2,140,48253
Non-polymers1794
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: cross-linking
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Eukaryotic translation initiation factor ... , 16 types, 16 molecules 134568opqrstuvxy

#1: Protein Eukaryotic translation initiation factor 3 subunit B / eIF3b / Eukaryotic translation initiation factor 3 subunit 9 / Prt1 homolog / hPrt1 / eIF-3-eta / ...eIF3b / Eukaryotic translation initiation factor 3 subunit 9 / Prt1 homolog / hPrt1 / eIF-3-eta / eIF3 p110 / eIF3 p116


Mass: 92464.297 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P55884
#2: 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
#3: 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
#4: 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
#5: 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
#7: 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
#43: Protein Eukaryotic translation initiation factor 3 subunit G / eIF3g / Eukaryotic translation initiation factor 3 RNA-binding subunit / eIF-3 RNA-binding subunit ...eIF3g / Eukaryotic translation initiation factor 3 RNA-binding subunit / eIF-3 RNA-binding subunit / Eukaryotic translation initiation factor 3 subunit 4 / eIF-3-delta / eIF3 p42 / eIF3 p44


Mass: 35662.016 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75821
#44: Protein Eukaryotic translation initiation factor 1 / eIF1 / A121 / Protein translation factor SUI1 homolog / Sui1iso1


Mass: 12752.498 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EIF1, SUI1 / Production host: Escherichia coli (E. coli) / References: UniProt: P41567
#45: Protein Eukaryotic translation initiation factor 1A, X-chromosomal / eIF-1A X isoform / Eukaryotic translation initiation factor 4C / eIF-4C


Mass: 16488.449 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EIF1AX, EIF1A, EIF4C / Production host: Escherichia coli (E. coli) / References: UniProt: P47813
#46: Protein Eukaryotic translation initiation factor 2 subunit 1 / Eukaryotic translation initiation factor 2 subunit alpha / eIF-2alpha


Mass: 36161.180 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P05198
#47: Protein Eukaryotic translation initiation factor 2 subunit 2 / Eukaryotic translation initiation factor 2 subunit beta / eIF-2-beta


Mass: 38454.484 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P20042
#48: Protein Eukaryotic translation initiation factor 2 subunit 3 / Eukaryotic translation initiation factor 2 subunit gamma X / eIF-2gX


Mass: 51178.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P41091, protein-synthesizing GTPase
#49: 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
#50: 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
#52: 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
#53: 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

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RNA chain , 3 types, 3 molecules 7Aw

#6: RNA chain mRNA


Mass: 6539.160 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#9: RNA chain 18S rRNA


Mass: 603102.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#51: 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

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Protein/peptide , 1 types, 1 molecules 9

#8: 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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40S ribosomal protein ... , 31 types, 31 molecules BCDEFGHIJKLMNOPQRSTVYZabdefhimn

#10: 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
#11: 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
#12: 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
#13: 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
#14: 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
#15: 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
#16: 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
#17: 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
#18: 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
#19: 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
#20: 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
#21: 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
#22: Protein 40S ribosomal protein SA / 37 kDa laminin receptor precursor / 37LRP / 37/67 kDa laminin receptor / LRP/LR / 67 kDa laminin ...37 kDa laminin receptor precursor / 37LRP / 37/67 kDa laminin receptor / LRP/LR / 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 / Small ribosomal subunit protein uS2


Mass: 32883.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P08865
#23: 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
#24: 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
#25: 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
#26: 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
#27: 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
#28: 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
#29: 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
#30: 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
#31: 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
#32: 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
#33: 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
#35: 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
#36: 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
#37: 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
#38: 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
#39: 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
#41: 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
#42: 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

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Protein , 2 types, 2 molecules ck

#34: 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
#40: 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

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Non-polymers , 2 types, 4 molecules

#54: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn
#55: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg

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Details

Has ligand of interestN
Has protein modificationY

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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

ComponentName: Human 48S initiation complex 40S-eIF1-eIF1A-eIF2-eIF3-tRNA-Met-mRNA
Type: RIBOSOME / Entity ID: #1-#53 / Source: MULTIPLE SOURCES
Buffer solutionpH: 7.5
Details: 20 mM Hepes, pH 7.5, 95 mM KOAc, 3.75 mM Mg(OAc)2, 1 mM ATP, 0.5 mM GTP, 0.25 mM spermidine, 2 mM DTT, 0.4 U/uL RiboLock RNase inhibitor
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid type: Quantifoil R3.5/1
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K
Details: Cryo-EM grids were prepared by floating home-made continuous carbon on 40 ul sample in the wells of teflon block (custom-made). The sample-covered carbon was then adsorbed to an EM grid.

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Details: Aberration corrections performed using Cs image corrector (CEOS company)
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 59000 X / Nominal defocus max: 4000 nm / Nominal defocus min: 1500 nm / Cs: 0.01 mm / Alignment procedure: ZEMLIN TABLEAU
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 1 sec. / Electron dose: 48 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 15544
Image scansWidth: 4096 / Height: 4096

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Processing

SoftwareName: UCSF ChimeraX / Version: 1.3/v9 / Classification: model building / URL: https://www.rbvi.ucsf.edu/chimerax/ / Os: Windows / Type: package
EM software
IDNameVersionCategory
2EPUimage acquisition
4GctfCTF correction
7Coot0.9.4model fitting
8UCSF ChimeraX1.2model fitting
10ISOLDE1.1model refinement
11Coot0.9.4model refinement
12UCSF ChimeraX1.2model refinement
13RELION3.1initial Euler assignment
14RELION3.1final Euler assignment
15RELION3.1classification
16RELION3.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 990486
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 57184 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL / Target criteria: RSCC
Atomic model buildingPDB-ID: 6ZMW

6zmw


Accession code: 6ZMW / Source name: PDB / Type: experimental model

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