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- PDB-6g18: Cryo-EM structure of a late human pre-40S ribosomal subunit - State C -

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Basic information

Entry
Database: PDB / ID: 6g18
TitleCryo-EM structure of a late human pre-40S ribosomal subunit - State C
Components
  • (40S ribosomal protein ...) x 26
  • (RNA-binding protein ...) x 2
  • Bystin
  • Pre-rRNA-processing protein TSR1 homolog
  • Protein LTV1 homolog
  • Receptor of activated protein C kinase 1
  • Serine/threonine-protein kinase RIO2
  • Ubiquitin-40S ribosomal protein S27a
  • pre-18S ribosomal RNA
KeywordsRIBOSOME / 40S / pre-40S / ribosome biogenesis
Function / homology
Function and homology information


positive regulation of ribosomal small subunit export from nucleus / regulation of protein localization to nucleolus / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / trophectodermal cell differentiation / positive regulation of rRNA processing / negative regulation of endoplasmic reticulum unfolded protein response / negative regulation of peptidyl-serine phosphorylation / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway ...positive regulation of ribosomal small subunit export from nucleus / regulation of protein localization to nucleolus / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / trophectodermal cell differentiation / positive regulation of rRNA processing / negative regulation of endoplasmic reticulum unfolded protein response / negative regulation of peptidyl-serine phosphorylation / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / protein tyrosine kinase inhibitor activity / IRE1-RACK1-PP2A complex / nucleolus organization / positive regulation of Golgi to plasma membrane protein transport / translation at postsynapse / TNFR1-mediated ceramide production / negative regulation of RNA splicing / mammalian oogenesis stage / regulation of mitotic metaphase/anaphase transition / activation-induced cell death of T cells / neural crest cell differentiation / U3 snoRNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / regulation of establishment of cell polarity / translation at presynapse / positive regulation of ubiquitin-protein transferase activity / Formation of the ternary complex, and subsequently, the 43S complex / negative regulation of phagocytosis / erythrocyte homeostasis / rRNA modification in the nucleus and cytosol / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / snoRNA binding / preribosome, small subunit precursor / negative regulation of ubiquitin protein ligase activity / pigmentation / Ribosomal scanning and start codon recognition / ion channel inhibitor activity / Translation initiation complex formation / positive regulation of mitochondrial depolarization / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / monocyte chemotaxis / negative regulation of translational frameshifting / Protein hydroxylation / BH3 domain binding / TOR signaling / SARS-CoV-1 modulates host translation machinery / regulation of cell division / mTORC1-mediated signalling / T cell proliferation involved in immune response / Peptide chain elongation / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / Formation of a pool of free 40S subunits / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ubiquitin ligase inhibitor activity / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / negative regulation of ubiquitin-dependent protein catabolic process / Viral mRNA Translation / negative regulation of respiratory burst involved in inflammatory response / phagocytic cup / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / erythrocyte development / Major pathway of rRNA processing in the nucleolus and cytosol / regulation of translational fidelity / 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) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Protein methylation / Nuclear events stimulated by ALK signaling in cancer / ribosomal small subunit export from nucleus / positive regulation of intrinsic apoptotic signaling pathway / rough endoplasmic reticulum / laminin binding / translation regulator activity / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / positive regulation of cell cycle / translation initiation factor binding / signaling adaptor activity / gastrulation / Maturation of protein E / Maturation of protein E / MDM2/MDM4 family protein binding / cytosolic ribosome / ER Quality Control Compartment (ERQC) / Mitotic Prometaphase / rescue of stalled ribosome / antiviral innate immune response / Myoclonic epilepsy of Lafora / EML4 and NUDC in mitotic spindle formation / FLT3 signaling by CBL mutants / negative regulation of protein binding / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex
Similarity search - Function
Ribosomal protein S8e, subdomain / Ribosomal protein S4, central domain / Phosducin; domain 2 / OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #1000 / Ribosomal protein S21 / Hypothetical Cytosolic Protein; Chain: A; / Putative WW-binding domain and destruction box / Putative WW-binding domain and destruction box / Ribosomal protein S27 / Nin one binding (NOB1) Zn-ribbon-like ...Ribosomal protein S8e, subdomain / Ribosomal protein S4, central domain / Phosducin; domain 2 / OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #1000 / Ribosomal protein S21 / Hypothetical Cytosolic Protein; Chain: A; / Putative WW-binding domain and destruction box / Putative WW-binding domain and destruction box / Ribosomal protein S27 / Nin one binding (NOB1) Zn-ribbon-like / Ribonuclease Nob1, eukaryote / NOB1 zinc finger-like superfamily / Nin one binding (NOB1) Zn-ribbon like / Ribonuclease, PIN domain / RNA-binding protein NOB1 / PIN domain of ribonuclease / Low temperature viability protein Ltv1 / Serine/threonine-protein kinase Rio2 / Low temperature viability protein / RIO2 kinase winged helix domain, N-terminal / Rio2, N-terminal / RIO kinase, conserved site / RIO1/ZK632.3/MJ0444 family signature. / Alpha-Beta Plaits - #3370 / Tsr1, G-like domain / RIO kinase / RIO-like kinase / : / RIO domain / Bystin / Bystin / : / : / Eukaryotic type KH-domain (KH-domain type I) (327.11.2) / Large family of predicted nucleotide-binding domains / Ribosome biogenesis protein BMS1/TSR1, C-terminal / AARP2CN / Bms1/Tsr1-type G domain / Ribosome biogenesis protein Bms1/Tsr1 / 40S ribosome biogenesis protein Tsr1 and BMS1 C-terminal / AARP2CN (NUC121) domain / Bms1-type guanine nucleotide-binding (G) domain profile. / AARP2CN (NUC121) domain / Protein of unknown function (DUF663) / Ribosomal Protein S8; Chain: A, domain 1 - #30 / Dna Ligase; domain 1 - #10 / Ribosomal protein S11/S14 / S15/NS1, RNA-binding / Ribosomal Protein S7 / Ribosomal protein S7/S5 / PIN domain / RNA-binding S4 domain / SH3 type barrels. - #30 / Ribosomal protein L30/S12 / Structural Genomics Hypothetical 15.5 Kd Protein In mrcA-pckA Intergenic Region; Chain A / Helicase, Ruva Protein; domain 3 - #50 / Double Stranded RNA Binding Domain - #20 / Glucose-6-phosphate isomerase like protein; domain 1 / Ribosomal Protein S8; Chain: A, domain 1 / K Homology domain, type 1 superfamily / 40S ribosomal protein SA / N-terminal domain of TfIIb / Ribosomal Protein S5; domain 2 - #10 / 40S ribosomal protein SA, C-terminal domain / 40S ribosomal protein SA C-terminus / Ubiquitin-like protein FUBI / Ribosomal Protein S5; domain 2 / Double Stranded RNA Binding Domain / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / : / Ribosomal protein S12e signature. / Ribosomal protein S12e / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Small (40S) ribosomal subunit Asc1/RACK1 / 60s Ribosomal Protein L30; Chain: A; / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein S21e / Ribosomal protein S2, eukaryotic / S27a-like superfamily / : / Ribosomal protein S7e signature. / Ribosomal protein S8e subdomain, eukaryotes / Ribosomal protein S25 / S25 ribosomal protein / Ribosomal protein S27a / Ribosomal protein S17e, conserved site / Ribosomal protein S27a / Ribosomal protein S17e signature. / Ribosomal protein S27a / Ribosomal protein S3Ae, conserved site / Ribosomal protein S3Ae signature. / Ribosomal protein S30 / Ribosomal protein S30 / Ribosomal protein S2, eukaryotic/archaeal / Ribosomal protein S27e signature. / 40S ribosomal protein S4, C-terminal domain
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 / Small ribosomal subunit protein eS12 / Small ribosomal subunit protein eS19 ...: / 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 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 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 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 eS28 / Ubiquitin-like FUBI-ribosomal protein eS30 fusion protein / Ubiquitin-ribosomal protein eS31 fusion protein / Small ribosomal subunit protein eS21 / Small ribosomal subunit protein RACK1 / Bystin / Pre-rRNA-processing protein TSR1 homolog / Protein LTV1 homolog / Serine/threonine-protein kinase RIO2 / RNA-binding protein PNO1 / RNA-binding protein NOB1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsAmeismeier, M. / Cheng, J. / Berninghausen, O. / Beckmann, R.
Funding support Germany, 4items
OrganizationGrant numberCountry
German Research FoundationSFB646 Germany
German Research FoundationGRK1721 Germany
German Research FoundationFOR1805 Germany
European Research CouncilCRYOTRANSLATION Germany
CitationJournal: Nature / Year: 2018
Title: Visualizing late states of human 40S ribosomal subunit maturation.
Authors: Michael Ameismeier / Jingdong Cheng / Otto Berninghausen / Roland Beckmann /
Abstract: The formation of eukaryotic ribosomal subunits extends from the nucleolus to the cytoplasm and entails hundreds of assembly factors. Despite differences in the pathways of ribosome formation, high- ...The formation of eukaryotic ribosomal subunits extends from the nucleolus to the cytoplasm and entails hundreds of assembly factors. Despite differences in the pathways of ribosome formation, high-resolution structural information has been available only from fungi. Here we present cryo-electron microscopy structures of late-stage human 40S assembly intermediates, representing one state reconstituted in vitro and five native states that range from nuclear to late cytoplasmic. The earliest particles reveal the position of the biogenesis factor RRP12 and distinct immature rRNA conformations that accompany the formation of the 40S subunit head. Molecular models of the late-acting assembly factors TSR1, RIOK1, RIOK2, ENP1, LTV1, PNO1 and NOB1 provide mechanistic details that underlie their contribution to a sequential 40S subunit assembly. The NOB1 architecture displays an inactive nuclease conformation that requires rearrangement of the PNO1-bound 3' rRNA, thereby coordinating the final rRNA folding steps with site 3 cleavage.
History
DepositionMar 20, 2018Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jun 6, 2018Provider: repository / Type: Initial release
Revision 1.1Jun 20, 2018Group: Data collection / Database references / Category: citation / Item: _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Jun 27, 2018Group: Data collection / Database references / Category: citation
Item: _citation.journal_id_ISSN / _citation.journal_volume ..._citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.3Oct 17, 2018Group: Data collection / Refinement description / Category: refine
Revision 1.4Oct 30, 2019Group: Advisory / Data collection / Derived calculations
Category: pdbx_validate_close_contact / struct_conn / struct_conn_type
Revision 1.5Dec 11, 2019Group: Other / Category: atom_sites / cell
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][1] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][2] / _atom_sites.fract_transf_matrix[3][3] / _cell.Z_PDB
Revision 1.6May 15, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

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Assembly

Deposited unit
2: pre-18S ribosomal RNA
F: 40S ribosomal protein S5
M: 40S ribosomal protein S12
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
Z: 40S ribosomal protein S25
c: 40S ribosomal protein S28
f: Ubiquitin-40S ribosomal protein S27a
g: Receptor of activated protein C kinase 1
A: 40S ribosomal protein SA
B: 40S ribosomal protein S3a
C: 40S ribosomal protein S2
E: 40S ribosomal protein S4, X isoform
G: 40S ribosomal protein S6
H: 40S ribosomal protein S7
I: 40S ribosomal protein S8
J: 40S ribosomal protein S9
L: 40S ribosomal protein S11
N: 40S ribosomal protein S13
O: 40S ribosomal protein S14
V: 40S ribosomal protein S21
W: 40S ribosomal protein S15a
X: 40S ribosomal protein S23
Y: 40S ribosomal protein S24
b: 40S ribosomal protein S27
e: 40S ribosomal protein S30
x: RNA-binding protein PNO1
y: RNA-binding protein NOB1
u: Pre-rRNA-processing protein TSR1 homolog
w: Bystin
v: Serine/threonine-protein kinase RIO2
t: Protein LTV1 homolog
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,479,28937
Polymers1,479,15835
Non-polymers1312
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area208420 Å2
ΔGint-1516 kcal/mol
Surface area449000 Å2
MethodPISA

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Components

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40S ribosomal protein ... , 26 types, 26 molecules FMPQRSTZcABCEGHIJLNOVWXYbe

#2: 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
#3: 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
#4: 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
#5: 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
#6: 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
#7: 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
#8: 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
#9: 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
#10: 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
#13: 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
#14: 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
#15: 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
#16: 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
#17: 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
#18: 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
#19: 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
#20: 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
#21: 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
#22: 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
#23: 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
#24: 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
#25: 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
#26: 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
#27: 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
#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 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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Protein , 6 types, 6 molecules fguwvt

#11: 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
#12: 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
#32: Protein Pre-rRNA-processing protein TSR1 homolog


Mass: 91951.188 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q2NL82
#33: Protein Bystin


Mass: 49673.258 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q13895
#34: Protein Serine/threonine-protein kinase RIO2 / RIO kinase 2


Mass: 63372.992 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: Q9BVS4, non-specific serine/threonine protein kinase
#35: Protein Protein LTV1 homolog


Mass: 54935.891 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q96GA3

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RNA-binding protein ... , 2 types, 2 molecules xy

#30: Protein RNA-binding protein PNO1


Mass: 27970.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NRX1
#31: Protein RNA-binding protein NOB1 / Phosphorylation regulatory protein HP-10 / Protein ART-4


Mass: 46743.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9ULX3

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RNA chain / Non-polymers , 2 types, 3 molecules 2

#1: RNA chain pre-18S ribosomal RNA


Mass: 604102.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 151415227
#36: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / 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

ComponentName: Cryo-EM structure of a human pre-40S ribosomal subunit with bound PNO1, NOB1, TSR1, BYST, RIOK2 and LTV1
Type: RIBOSOME
Details: Cytoplasmic precursor of the human small ribosomal subunit (pre-40S) purified by affinity chromatography using the StFLAG-tagged ribosomal biogenesis factor PNO1
Entity ID: #1-#35 / Source: NATURAL
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.6
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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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: 2.5 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k)

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Processing

SoftwareName: REFMAC / Version: 5.8.0158 / Classification: refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 287847 / Symmetry type: POINT
RefinementResolution: 3.6→260.16 Å / Cor.coef. Fo:Fc: 0.919 / ESU R: 0.622
Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflection
Rwork0.27846 --
obs0.27846 553304 100 %
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 104.814 Å2
Baniso -1Baniso -2Baniso -3
1--2.98 Å2-3.27 Å20.42 Å2
2--3.68 Å2-3.71 Å2
3----0.71 Å2
Refinement stepCycle: 1 / Total: 83825
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
ELECTRON MICROSCOPYr_bond_refined_d0.0060.01688874
ELECTRON MICROSCOPYr_bond_other_d00.0264628
ELECTRON MICROSCOPYr_angle_refined_deg1.1091.637127919
ELECTRON MICROSCOPYr_angle_other_deg3.4253151427
ELECTRON MICROSCOPYr_dihedral_angle_1_deg5.21556014
ELECTRON MICROSCOPYr_dihedral_angle_2_deg39.14822.6362162
ELECTRON MICROSCOPYr_dihedral_angle_3_deg19.337159491
ELECTRON MICROSCOPYr_dihedral_angle_4_deg14.3415498
ELECTRON MICROSCOPYr_chiral_restr0.0860.213989
ELECTRON MICROSCOPYr_gen_planes_refined0.0050.0273225
ELECTRON MICROSCOPYr_gen_planes_other0.0060.0218985
ELECTRON MICROSCOPYr_nbd_refined
ELECTRON MICROSCOPYr_nbd_other
ELECTRON MICROSCOPYr_nbtor_refined
ELECTRON MICROSCOPYr_nbtor_other
ELECTRON MICROSCOPYr_xyhbond_nbd_refined
ELECTRON MICROSCOPYr_xyhbond_nbd_other
ELECTRON MICROSCOPYr_metal_ion_refined
ELECTRON MICROSCOPYr_metal_ion_other
ELECTRON MICROSCOPYr_symmetry_vdw_refined
ELECTRON MICROSCOPYr_symmetry_vdw_other
ELECTRON MICROSCOPYr_symmetry_hbond_refined
ELECTRON MICROSCOPYr_symmetry_hbond_other
ELECTRON MICROSCOPYr_symmetry_metal_ion_refined
ELECTRON MICROSCOPYr_symmetry_metal_ion_other
ELECTRON MICROSCOPYr_mcbond_it5.22710.63324194
ELECTRON MICROSCOPYr_mcbond_other5.22710.63324193
ELECTRON MICROSCOPYr_mcangle_it9.42615.92430162
ELECTRON MICROSCOPYr_mcangle_other9.42615.92430163
ELECTRON MICROSCOPYr_scbond_it5.03610.74664680
ELECTRON MICROSCOPYr_scbond_other5.03610.74664681
ELECTRON MICROSCOPYr_scangle_it
ELECTRON MICROSCOPYr_scangle_other8.83915.93297758
ELECTRON MICROSCOPYr_long_range_B_refined14.42199593
ELECTRON MICROSCOPYr_long_range_B_other14.42199594
ELECTRON MICROSCOPYr_rigid_bond_restr
ELECTRON MICROSCOPYr_sphericity_free
ELECTRON MICROSCOPYr_sphericity_bonded
LS refinement shellResolution: 3.6→3.693 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rwork0.502 40797 -
Rfree-0 -
obs--100 %

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