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- PDB-5oa3: Human 40S-eIF2D-re-initiation complex -

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Basic information

Entry
Database: PDB / ID: 5oa3
TitleHuman 40S-eIF2D-re-initiation complex
Components
  • (40S ribosomal protein ...) x 31
  • 18S ribosomal RNA
  • Eukaryotic translation initiation factor 2D
  • IRES mRNA
  • RIBOSOMAL PROTEIN EL41
  • Receptor of activated protein C kinase 1
  • Ribosomal protein S27a
  • initiator Met-tRNA-i
KeywordsTRANSLATION / translation re-initiation complex / small ribosomal subunit / RNA binding protein / eukaryotic translation initiation factor
Function / homology
Function and homology information


IRES-dependent viral translational initiation / formation of translation preinitiation complex / ribosome disassembly / 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 intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation ...IRES-dependent viral translational initiation / formation of translation preinitiation complex / ribosome disassembly / 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 intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / nucleolus organization / TNFR1-mediated ceramide production / positive regulation of ubiquitin-protein transferase activity / positive regulation of DNA-templated transcription initiation / negative regulation of RNA splicing / negative regulation of DNA repair / erythrocyte homeostasis / supercoiled DNA binding / regulation of establishment of cell polarity / cysteine-type endopeptidase activator activity involved in apoptotic process / oxidized purine DNA binding / NF-kappaB complex / cytoplasmic translational initiation / rRNA modification in the nucleus and cytosol / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of phagocytosis / negative regulation of bicellular tight junction assembly / ubiquitin-like protein conjugating enzyme binding / cytoplasmic side of rough endoplasmic reticulum membrane / Formation of the ternary complex, and subsequently, the 43S complex / laminin receptor activity / negative regulation of myoblast fusion / ion channel inhibitor activity / protein kinase A binding / positive regulation of mitochondrial depolarization / Ribosomal scanning and start codon recognition / PELO:HBS1L and ABCE1 dissociate a ribosome on a non-stop mRNA / Translation initiation complex formation / negative regulation of Wnt signaling pathway / fibroblast growth factor binding / ZNF598 and the Ribosome-associated Quality Trigger (RQT) complex dissociate a ribosome stalled on a no-go mRNA / Protein hydroxylation / TOR signaling / BH3 domain binding / negative regulation of translational frameshifting / iron-sulfur cluster binding / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / monocyte chemotaxis / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / regulation of cell division / positive regulation of GTPase activity / Peptide chain elongation / cellular response to ethanol / Selenocysteine synthesis / Dengue Virus Attachment and Entry / 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 / negative regulation of respiratory burst involved in inflammatory response / protein serine/threonine kinase inhibitor activity / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / negative regulation of ubiquitin-dependent protein catabolic process / ubiquitin ligase inhibitor activity / Viral mRNA Translation / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / positive regulation of signal transduction by p53 class mediator / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / regulation of translational fidelity / positive regulation of microtubule polymerization / phagocytic cup / spindle assembly / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / gastrulation / 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 / Ribosome Quality Control (RQC) complex extracts and degrades nascent peptide / ribosomal small subunit export from nucleus / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / laminin binding / DNA-(apurinic or apyrimidinic site) endonuclease activity / negative regulation of protein ubiquitination / positive regulation of cell cycle / translation initiation factor activity / rescue of stalled cytosolic ribosome / signaling adaptor activity / MDM2/MDM4 family protein binding / liver regeneration
Similarity search - Function
Eukaryotic translation initiation factor 2D, SUI1 domain / : / : / : / : / eIF2D winged helix domain / eIF2D, SWIB domain / elF2D, PUA domain / Eukaryotic translation initiation factor 2D / Pre-PUA domain ...Eukaryotic translation initiation factor 2D, SUI1 domain / : / : / : / : / eIF2D winged helix domain / eIF2D, SWIB domain / elF2D, PUA domain / Eukaryotic translation initiation factor 2D / Pre-PUA domain / Pre-PUA-like domain / SUI1 domain superfamily / Translation initiation factor SUI1 / Translation initiation factor SUI1 family profile. / SUI1 domain / Putative RNA-binding Domain in PseudoUridine synthase and Archaeosine transglycosylase / PUA domain / PUA domain profile. / SWIB/MDM2 domain / SWIB/MDM2 domain profile. / SWIB/MDM2 domain superfamily / 40S ribosomal protein SA / PUA-like superfamily / 40S ribosomal protein SA, C-terminal domain / 40S ribosomal protein SA C-terminus / Ubiquitin-like protein FUBI / : / 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 / Ribosomal protein S30 / Ribosomal protein S30 / Ribosomal protein S10, eukaryotic/archaeal / Ribosomal protein S25 / S25 ribosomal protein / Ribosomal protein S8e subdomain, eukaryotes / : / Ribosomal protein S7e signature. / Ribosomal protein S17e, conserved site / Ribosomal protein S17e signature. / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S2, eukaryotic/archaeal / 40S ribosomal protein S29/30S ribosomal protein S14 type Z / Ribosomal protein S3, eukaryotic/archaeal / Ribosomal protein S3Ae, conserved site / Ribosomal protein S3Ae signature. / Ribosomal protein S8e, conserved site / Ribosomal protein S8e signature. / 40S ribosomal protein S4, C-terminal domain / 40S ribosomal protein S4 C-terminus / Ribosomal protein S27e signature. / Ribosomal protein S19A/S15e / Ribosomal protein S19e / Ribosomal protein S19e / Ribosomal_S19e / Ribosomal protein S6, eukaryotic / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal protein S4e signature. / Ribosomal protein S17e / Ribosomal protein S17e-like superfamily / Ribosomal S17 / 40S ribosomal protein S1/3, eukaryotes / 40S ribosomal protein S11, N-terminal / Ribosomal_S17 N-terminal / Ribosomal protein S7e / Ribosomal protein S7e / : / Ribosomal S24e conserved site / Ribosomal protein S24e signature. / Ribosomal protein S4e, N-terminal / RS4NT (NUC023) domain / Ribosomal protein S4, KOW domain / Ribosomal protein S4e / Ribosomal protein S4e, central region / Ribosomal protein S4e, central domain superfamily / Ribosomal family S4e / Ribosomal protein S28e conserved site / Ribosomal protein S28e signature.
Similarity search - Domain/homology
: / : / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein eS17 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS5 ...: / : / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / 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 / Eukaryotic translation initiation factor 2D / Small ribosomal subunit protein eS27 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein eS10 / 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 / Small ribosomal subunit protein eS21 / Small ribosomal subunit protein RACK1 / Ubiquitin-ribosomal protein eS31 fusion protein
Similarity search - Component
Biological speciesHomo sapiens (human)
Saccharomyces cerevisiae (brewer's yeast)
Hepatitis C virus
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.2 Å
AuthorsWeisser, M. / Schaefer, T. / Leibundgut, M. / Boehringer, D. / Aylett, C.H.S. / Ban, N.
CitationJournal: Mol Cell / Year: 2017
Title: Structural and Functional Insights into Human Re-initiation Complexes.
Authors: Melanie Weisser / Tanja Schäfer / Marc Leibundgut / Daniel Böhringer / Christopher Herbert Stanley Aylett / Nenad Ban /
Abstract: After having translated short upstream open reading frames, ribosomes can re-initiate translation on the same mRNA. This process, referred to as re-initiation, controls the translation of a large ...After having translated short upstream open reading frames, ribosomes can re-initiate translation on the same mRNA. This process, referred to as re-initiation, controls the translation of a large fraction of mammalian cellular mRNAs, many of which are important in cancer. Key ribosomal binding proteins involved in re-initiation are the eukaryotic translation initiation factor 2D (eIF2D) or the homologous complex of MCT-1/DENR. We determined the structures of these factors bound to the human 40S ribosomal subunit in complex with initiator tRNA positioned on an mRNA start codon in the P-site using a combination of cryoelectron microscopy and X-ray crystallography. The structures, supported by biochemical experiments, reveal how eIF2D emulates the function of several canonical translation initiation factors by using three independent, flexibly connected RNA binding domains to simultaneously monitor codon-anticodon interactions in the ribosomal P-site and position the initiator tRNA.
History
DepositionJun 20, 2017Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 9, 2017Provider: repository / Type: Initial release
Revision 1.1Aug 16, 2017Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.2Oct 17, 2018Group: Data collection / Refinement description / Category: refine
Revision 1.3Dec 11, 2019Group: Other / Category: atom_sites / cell
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3] / _cell.Z_PDB
Revision 1.4May 15, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / refine
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _refine.ls_d_res_high / _refine.ls_d_res_low

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Structure visualization

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Assembly

Deposited unit
0: Eukaryotic translation initiation factor 2D
1: initiator Met-tRNA-i
2: 18S ribosomal RNA
3: IRES mRNA
A: 40S ribosomal protein SA
B: 40S ribosomal protein S3a
C: 40S ribosomal protein S2
D: 40S ribosomal protein S3
E: 40S ribosomal protein S4, X isoform
F: 40S ribosomal protein S5
G: 40S ribosomal protein S6
H: 40S ribosomal protein S7
I: 40S ribosomal protein S8
J: 40S ribosomal protein S9
K: 40S ribosomal protein S10
L: 40S ribosomal protein S11
M: 40S ribosomal protein S12
N: 40S ribosomal protein S13
O: 40S ribosomal protein S14
P: 40S ribosomal protein S15
Q: 40S ribosomal protein S16
R: 40S ribosomal protein S17
S: 40S ribosomal protein S18
T: 40S ribosomal protein S19
U: 40S ribosomal protein S20
V: 40S ribosomal protein S21
W: 40S ribosomal protein S15a
X: 40S ribosomal protein S23
Y: 40S ribosomal protein S24
Z: 40S ribosomal protein S25
a: 40S ribosomal protein S26
b: 40S ribosomal protein S27
c: 40S ribosomal protein S28
d: 40S ribosomal protein S29
e: 40S ribosomal protein S30
f: Ribosomal protein S27a
g: Receptor of activated protein C kinase 1
h: RIBOSOMAL PROTEIN EL41
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,389,58541
Polymers1,389,38938
Non-polymers1963
Water00
1


  • Idetical with deposited unit
  • defined by software
  • Evidence: equilibrium centrifugation
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area201360 Å2
ΔGint-1501 kcal/mol
Surface area464010 Å2
MethodPISA

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Components

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Protein , 3 types, 3 molecules 0fg

#1: Protein Eukaryotic translation initiation factor 2D / eIF2d / Hepatocellular carcinoma-associated antigen 56 / Ligatin


Mass: 64788.301 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EIF2D, HCA56, LGTN / Production host: Escherichia coli (E. coli) / References: UniProt: P41214
#36: Protein Ribosomal protein S27a


Mass: 8453.150 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q5RKT7
#37: 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: 34857.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63244

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RNA chain , 3 types, 3 molecules 123

#2: RNA chain initiator Met-tRNA-i


Mass: 24238.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: GenBank: 176433
#3: RNA chain 18S ribosomal RNA


Mass: 602472.688 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 337376
#4: RNA chain IRES mRNA


Mass: 88648.414 Da / Num. of mol.: 1
Fragment: (delta domain II mutant, in which domain II of the IRES is replaced with a small stem loop
Source method: obtained synthetically
Details: HCV IRES mRNA (delta domain II mutant, in which domain II of the IRES is replaced with a small stem loop)
Source: (synth.) Hepatitis C virus / References: GenBank: 555439351

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40S ribosomal protein ... , 31 types, 31 molecules ABCDEFGHIJKLMNOPQRSTUVWXYZabcde

#5: 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
#6: 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
#7: 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
#8: 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
#9: 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
#10: 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
#11: 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
#12: 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
#13: 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
#14: 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
#15: 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
#16: 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
#17: 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
#18: 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
#19: 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
#20: 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
#21: 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
#22: 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
#23: 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
#24: 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
#25: 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
#26: 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
#27: 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
#28: 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
#29: Protein 40S ribosomal protein S24 / Small ribosomal subunit protein eS24


Mass: 15107.924 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62847
#30: 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
#31: Protein 40S ribosomal protein S26 / Small ribosomal subunit protein eS26


Mass: 11645.794 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62854
#32: Protein 40S ribosomal protein S27 / Metallopan-stimulin 1 / MPS-1 / Small ribosomal subunit protein eS27


Mass: 9210.843 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P42677
#33: Protein 40S ribosomal protein S28 / Small ribosomal subunit protein eS28


Mass: 6878.940 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62857
#34: Protein 40S ribosomal protein S29 / Small ribosomal subunit protein uS14


Mass: 6559.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62273
#35: Protein 40S ribosomal protein S30 / Small ribosomal subunit protein eS30


Mass: 6302.480 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62861

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Protein/peptide / Non-polymers , 2 types, 4 molecules h

#38: Protein/peptide RIBOSOMAL PROTEIN EL41


Mass: 3342.255 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62945*PLUS
#39: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Zn

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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
1human translation re-initiation complex of eIFD, initiator tRNA and the small ribosomal subunitCOMPLEX#1-#380MULTIPLE SOURCES
2eIF2DCOMPLEX#11RECOMBINANT
3small ribosomal subunitCOMPLEX#3, #5-#381NATURAL
4HCV IRES mRNACOMPLEX#41RECOMBINANT
5initiator Met-tRNA-iCOMPLEX#21NATURAL
Molecular weightValue: 1.4 MDa / Experimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Homo sapiens (human)9606
23Homo sapiens (human)9606
34Hepatitis C virus11103
45Saccharomyces cerevisiae (brewer's yeast)4932
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Escherichia coli (E. coli)562
24Synthetic construct (others)32630
Buffer solutionpH: 7.6
Buffer component
IDConc.NameFormulaBuffer-ID
125 mMHEPES-KOH1
275 mMPotassium chlorideKCl1
32.5 mMMagnesium acetate1
42 mMDTT1
SpecimenConc.: 0.11 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid type: Quantifoil R2/2
VitrificationCryogen name: ETHANE-PROPANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 40 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.9_1692 / Classification: refinement
EM software
IDNameVersionCategoryDetails (eV)
1EMAN1particle selection
4RELION1.4CTF correctionCTFFIND4
10RELIONinitial Euler assignment
11RELIONfinal Euler assignment
12RELIONclassification
13RELION3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 62177 / Symmetry type: POINT
RefinementResolution: 4.2→4.2 Å / SU ML: 0.74 / σ(F): 1.18 / Phase error: 33.96 / Stereochemistry target values: MLHL
RfactorNum. reflection% reflection
Rfree0.3252 13607 2.5 %
Rwork0.3018 --
obs0.3024 543565 99.92 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00589370
ELECTRON MICROSCOPYf_angle_d0.923129914
ELECTRON MICROSCOPYf_dihedral_angle_d18.78140002
ELECTRON MICROSCOPYf_chiral_restr0.03916099
ELECTRON MICROSCOPYf_plane_restr0.0059328
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
4.3001-4.34890.44824220.441817665ELECTRON MICROSCOPY100
4.3489-4.40010.42214450.41718049ELECTRON MICROSCOPY100
4.4001-4.45370.4374360.404317528ELECTRON MICROSCOPY100
4.4537-4.510.43744390.391117718ELECTRON MICROSCOPY100
4.51-4.56930.43884510.384217631ELECTRON MICROSCOPY100
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