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- PDB-8csq: Human mitochondrial small subunit assembly intermediate (State B) -

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Basic information

Entry
Database: PDB / ID: 8csq
TitleHuman mitochondrial small subunit assembly intermediate (State B)
Components
  • (28S ribosomal protein ...) x 26
  • 12S mitochondrial rRNA
  • Aurora kinase A-interacting protein
  • Dimethyladenosine transferase 1, mitochondrial
  • GTPase Era, mitochondrial
  • Malonyl-CoA-acyl carrier protein transacylase, mitochondrial
  • Methyltransferase-like protein 17, mitochondrial
  • Pentatricopeptide repeat domain-containing protein 3, mitochondrial
KeywordsRIBOSOME / Ribonucleoprotein complex / Mitochondria Biogenesis
Function / homology
Function and homology information


mitochondrial small ribosomal subunit assembly / mitochondrial transcription factor activity / rRNA modification in the mitochondrion / transcription initiation at mitochondrial promoter / rRNA modification / rRNA (adenine-N6,N6-)-dimethyltransferase activity / Mitochondrial Fatty Acid Beta-Oxidation / mitochondrial ribosome binding / [acyl-carrier-protein] S-malonyltransferase / [acyl-carrier-protein] S-malonyltransferase activity ...mitochondrial small ribosomal subunit assembly / mitochondrial transcription factor activity / rRNA modification in the mitochondrion / transcription initiation at mitochondrial promoter / rRNA modification / rRNA (adenine-N6,N6-)-dimethyltransferase activity / Mitochondrial Fatty Acid Beta-Oxidation / mitochondrial ribosome binding / [acyl-carrier-protein] S-malonyltransferase / [acyl-carrier-protein] S-malonyltransferase activity / mitochondrial ribosome assembly / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / positive regulation of mitochondrial translation / S-adenosyl-L-methionine binding / negative regulation of mitotic nuclear division / mitochondrial ribosome / rRNA methylation / mitochondrial small ribosomal subunit / mitochondrial translation / fatty acid beta-oxidation / mitochondrial nucleoid / positive regulation of proteolysis / ribosomal small subunit binding / Mitochondrial protein degradation / Transferases; Transferring one-carbon groups; Methyltransferases / apoptotic signaling pathway / Transcriptional activation of mitochondrial biogenesis / fatty acid biosynthetic process / cell junction / regulation of translation / ribosomal small subunit biogenesis / ribosomal small subunit assembly / 4 iron, 4 sulfur cluster binding / small ribosomal subunit / small ribosomal subunit rRNA binding / nuclear membrane / tRNA binding / cell population proliferation / mitochondrial inner membrane / rRNA binding / ribosome / structural constituent of ribosome / mitochondrial matrix / translation / protein domain specific binding / intracellular membrane-bounded organelle / mRNA binding / nucleolus / GTP binding / mitochondrion / DNA binding / RNA binding / nucleoplasm / nucleus / metal ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
: / GTP-binding protein Era / Era-type guanine nucleotide-binding (G) domain / Era-type guanine nucleotide-binding (G) domain profile. / Ribosomal protein Rsm22-like / : / Mitochondrial small ribosomal subunit Rsm22 / rRNA adenine dimethylase, C-terminal domain / rRNA adenine dimethylase-like, C-terminal / Ribosomal RNA adenine dimethylase ...: / GTP-binding protein Era / Era-type guanine nucleotide-binding (G) domain / Era-type guanine nucleotide-binding (G) domain profile. / Ribosomal protein Rsm22-like / : / Mitochondrial small ribosomal subunit Rsm22 / rRNA adenine dimethylase, C-terminal domain / rRNA adenine dimethylase-like, C-terminal / Ribosomal RNA adenine dimethylase / Ribosomal RNA adenine methylase transferase, conserved site / Ribosomal RNA adenine methylase transferase, N-terminal / Ribosomal RNA adenine dimethylases signature. / Ribosomal RNA adenine dimethylases / 28S ribosomal protein S26 / Mitochondrial ribosome subunit S26 / Ribosomal RNA adenine methyltransferase KsgA/Erm / Ribosomal RNA adenine dimethylase / rRNA adenine N(6)-methyltransferase family profile. / 28S ribosomal protein S27, mitochondrial / MRPS27/PTCD2 / Mitochondrial 28S ribosomal protein S27 / Ribosomal protein S22, mitochondrial / Ribosomal protein S23, mitochondrial / Ribosomal protein S23/S25, mitochondrial / Mitochondrial 28S ribosomal protein S31 / : / Mitochondrial 28S ribosomal protein S22 / Mitochondrial ribosomal protein S23 / Mitochondrial 28S ribosomal protein S31 / Ribosomal protein S29, mitochondrial / Ribosomal protein S28, mitochondrial / Mitochondrial 28S ribosomal protein S34 / 28S ribosomal protein S10, mitochondrial / Mitochondrial ribosomal protein MRP-S35 / Mitochondrial 28S ribosomal protein S34 / 28S ribosomal protein S24, mitochondrial / Pentatricopeptide repeat domain-containing protein 3 / 28S ribosomal protein S17, mitochondrial / 28S ribosomal protein S18b, mitochondrial / : / : / Mitochondrial ribosome subunit S24 / Small ribosomal subunit protein uS5m, N-terminal / Small ribosomal subunit protein mS39, PPR / 28S ribosomal protein S25, mitochondrial / Ribosomal protein S6/Translation elongation factor EF1B / Pentatricopeptide repeat domain / Ribosomal protein S27/S33, mitochondrial / Ribosomal protein S24/S35, mitochondrial / Mitochondrial ribosomal subunit S27 / Ribosomal protein S24/S35, mitochondrial, conserved domain / Mitochondrial ribosomal subunit protein / Pentatricopeptide (PPR) repeat profile. / Ribosomal protein S23/S29, mitochondrial / Mitochondrial ribosomal death-associated protein 3 / Pentatricopeptide repeat / Mitochondrial mRNA-processing protein COX24, C-terminal / Mitochondrial mRNA-processing protein COX24, C-terminal / Mitochondrial domain of unknown function (DUF1713) / 50S ribosome-binding GTPase / Malonyl-CoA ACP transacylase, ACP-binding / Acyl transferase / Acyl transferase domain / Acyl transferase domain in polyketide synthase (PKS) enzymes. / Acyl transferase domain superfamily / GTP binding domain / Acyl transferase/acyl hydrolase/lysophospholipase / Mitochondrial ribosomal protein L51 / S25 / CI-B8 domain / Ribosomal protein/NADH dehydrogenase domain / Mitochondrial ribosomal protein L51 / S25 / CI-B8 domain / Ribosomal protein S21 superfamily / Ribosomal protein S21 / Helicase, Ruva Protein; domain 3 / Ribosomal protein S21 / Vaccinia Virus protein VP39 / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. / Ribosomal protein S16 / Ribosomal protein S16 domain superfamily / Ribosomal protein S16 / Ribosomal protein S15, bacterial-type / Ribosomal protein S6 / Ribosomal protein S6 / Ribosomal protein S6 superfamily / Ribosomal protein S12, bacterial-type / Translation elongation factor EF1B/ribosomal protein S6 / Ribosomal protein S18 / Ribosomal protein S18 / Ribosomal protein S18 superfamily / Ribosomal protein S2 signature 1. / Ribosomal protein S2, conserved site / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / Ribosomal protein S2 / Ribosomal protein S2, flavodoxin-like domain superfamily / Ribosomal protein S2 / K homology domain superfamily, prokaryotic type / Ribosomal protein S5
Similarity search - Domain/homology
ADENOSINE-5'-TRIPHOSPHATE / FE2/S2 (INORGANIC) CLUSTER / GUANOSINE-5'-DIPHOSPHATE / : / S-ADENOSYLMETHIONINE / IRON/SULFUR CLUSTER / : / RNA / RNA (> 10) / RNA (> 100) ...ADENOSINE-5'-TRIPHOSPHATE / FE2/S2 (INORGANIC) CLUSTER / GUANOSINE-5'-DIPHOSPHATE / : / S-ADENOSYLMETHIONINE / IRON/SULFUR CLUSTER / : / RNA / RNA (> 10) / RNA (> 100) / Small ribosomal subunit protein uS12m / Small ribosomal subunit protein uS14m / GTPase Era, mitochondrial / Small ribosomal subunit protein mS29 / Small ribosomal subunit protein mS22 / Small ribosomal subunit protein mS25 / Small ribosomal subunit protein uS10m / Small ribosomal subunit protein mS35 / Small ribosomal subunit protein uS5m / Small ribosomal subunit protein uS15m / Small ribosomal subunit protein bS21m / Small ribosomal subunit protein mS34 / Small ribosomal subunit protein bS6m / Small ribosomal subunit protein uS9m / Malonyl-CoA-acyl carrier protein transacylase, mitochondrial / Dimethyladenosine transferase 1, mitochondrial / Small ribosomal subunit protein mS27 / Small ribosomal subunit protein mS31 / Small ribosomal subunit protein uS3m / Small ribosomal subunit protein mS39 / Small ribosomal subunit protein mS26 / Ribosome assembly protein METTL17, mitochondrial / Small ribosomal subunit protein mS38 / Small ribosomal subunit protein mS33 / Small ribosomal subunit protein bS1m / Small ribosomal subunit protein uS17m / Small ribosomal subunit protein uS7m / Small ribosomal subunit protein uS2m / Small ribosomal subunit protein bS16m / Small ribosomal subunit protein bS18m / Small ribosomal subunit protein mS23 / Small ribosomal subunit protein mS40
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.54 Å
AuthorsHarper, N.J. / Burnside, C. / Klinge, S.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)5T32GM136640-02 United States
The Robertson Foundation
CitationJournal: Nature / Year: 2023
Title: Principles of mitoribosomal small subunit assembly in eukaryotes.
Authors: Nathan J Harper / Chloe Burnside / Sebastian Klinge /
Abstract: Mitochondrial ribosomes (mitoribosomes) synthesize proteins encoded within the mitochondrial genome that are assembled into oxidative phosphorylation complexes. Thus, mitoribosome biogenesis is ...Mitochondrial ribosomes (mitoribosomes) synthesize proteins encoded within the mitochondrial genome that are assembled into oxidative phosphorylation complexes. Thus, mitoribosome biogenesis is essential for ATP production and cellular metabolism. Here we used cryo-electron microscopy to determine nine structures of native yeast and human mitoribosomal small subunit assembly intermediates, illuminating the mechanistic basis for how GTPases are used to control early steps of decoding centre formation, how initial rRNA folding and processing events are mediated, and how mitoribosomal proteins have active roles during assembly. Furthermore, this series of intermediates from two species with divergent mitoribosomal architecture uncovers both conserved principles and species-specific adaptations that govern the maturation of mitoribosomal small subunits in eukaryotes. By revealing the dynamic interplay between assembly factors, mitoribosomal proteins and rRNA that are required to generate functional subunits, our structural analysis provides a vignette for how molecular complexity and diversity can evolve in large ribonucleoprotein assemblies.
History
DepositionMay 13, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 14, 2022Provider: repository / Type: Initial release
Revision 1.1Dec 21, 2022Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID
Revision 1.2Feb 15, 2023Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.year
Revision 1.3Jun 12, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / em_3d_fitting_list
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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
0: 28S ribosomal protein S34, mitochondrial
1: 28S ribosomal protein S35, mitochondrial
3: Aurora kinase A-interacting protein
4: Pentatricopeptide repeat domain-containing protein 3, mitochondrial
5: Dimethyladenosine transferase 1, mitochondrial
7: Methyltransferase-like protein 17, mitochondrial
8: Malonyl-CoA-acyl carrier protein transacylase, mitochondrial
A: 12S mitochondrial rRNA
B: 28S ribosomal protein S2, mitochondrial
C: 28S ribosomal protein S24, mitochondrial
D: 28S ribosomal protein S5, mitochondrial
E: 28S ribosomal protein S6, mitochondrial
F: 28S ribosomal protein S7, mitochondrial
G: 28S ribosomal protein S9, mitochondrial
H: 28S ribosomal protein S10, mitochondrial
J: 28S ribosomal protein S12, mitochondrial
K: 28S ribosomal protein S14, mitochondrial
L: 28S ribosomal protein S15, mitochondrial
M: 28S ribosomal protein S16, mitochondrial
N: 28S ribosomal protein S17, mitochondrial
O: 28S ribosomal protein S18b, mitochondrial
P: 28S ribosomal protein S18c, mitochondrial
Q: 28S ribosomal protein S21, mitochondrial
R: 28S ribosomal protein S22, mitochondrial
S: 28S ribosomal protein S23, mitochondrial
T: 28S ribosomal protein S25, mitochondrial
U: 28S ribosomal protein S26, mitochondrial
V: 28S ribosomal protein S27, mitochondrial
W: 28S ribosomal protein S28, mitochondrial
X: 28S ribosomal protein S29, mitochondrial
Y: 28S ribosomal protein S31, mitochondrial
Z: 28S ribosomal protein S33, mitochondrial
a: GTPase Era, mitochondrial
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,292,75471
Polymers1,289,82433
Non-polymers2,93038
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: mass spectrometry
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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28S ribosomal protein ... , 26 types, 26 molecules 01BCDEFGHJKLMNOPQRSTUVWXYZ

#1: Protein 28S ribosomal protein S34, mitochondrial / S34mt / Mitochondrial small ribosomal subunit protein mS34


Mass: 25695.549 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82930
#2: Protein 28S ribosomal protein S35, mitochondrial / S35mt / 28S ribosomal protein S28 / mitochondrial / S28mt / Mitochondrial small ribosomal subunit protein mS35


Mass: 36898.328 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82673
#9: Protein 28S ribosomal protein S2, mitochondrial / S2mt / Mitochondrial small ribosomal subunit protein uS2m


Mass: 33298.238 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y399
#10: Protein 28S ribosomal protein S24, mitochondrial / S24mt / Mitochondrial small ribosomal subunit protein uS3m / bMRP-47 / bMRP47


Mass: 19046.164 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q96EL2
#11: Protein 28S ribosomal protein S5, mitochondrial / S5mt / Mitochondrial small ribosomal subunit protein uS5m


Mass: 48094.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82675
#12: Protein 28S ribosomal protein S6, mitochondrial / S6mt / Mitochondrial small ribosomal subunit protein bS6m


Mass: 14250.588 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82932
#13: Protein 28S ribosomal protein S7, mitochondrial / S7mt / Mitochondrial small ribosomal subunit protein uS7m / bMRP-27a / bMRP27a


Mass: 28186.154 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y2R9
#14: Protein 28S ribosomal protein S9, mitochondrial / S9mt / Mitochondrial small ribosomal subunit protein uS9m


Mass: 45909.859 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82933
#15: Protein 28S ribosomal protein S10, mitochondrial / S10mt / Mitochondrial small ribosomal subunit protein uS10m


Mass: 23033.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82664
#16: Protein 28S ribosomal protein S12, mitochondrial / S12mt / MT-RPS12 / Mitochondrial small ribosomal subunit protein uS12m


Mass: 15200.947 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15235
#17: Protein 28S ribosomal protein S14, mitochondrial / S14mt / Mitochondrial small ribosomal subunit protein uS14m


Mass: 15168.788 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O60783
#18: Protein 28S ribosomal protein S15, mitochondrial / S15mt / Mitochondrial small ribosomal subunit protein uS15m


Mass: 29903.293 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82914
#19: Protein 28S ribosomal protein S16, mitochondrial / S16mt / Mitochondrial small ribosomal subunit protein bS16m


Mass: 15371.899 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y3D3
#20: Protein 28S ribosomal protein S17, mitochondrial / S17mt / Mitochondrial small ribosomal subunit protein uS17m


Mass: 14526.078 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y2R5
#21: Protein 28S ribosomal protein S18b, mitochondrial / S18mt-b / 28S ribosomal protein S18-2 / mitochondrial / MRP-S18-2 / Mitochondrial small ribosomal ...S18mt-b / 28S ribosomal protein S18-2 / mitochondrial / MRP-S18-2 / Mitochondrial small ribosomal subunit protein bS18b / Mitochondrial small ribosomal subunit protein mS40


Mass: 29440.629 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y676
#22: Protein 28S ribosomal protein S18c, mitochondrial / S18mt-c / 28S ribosomal protein S18-1 / mitochondrial / MRP-S18-1 / Mitochondrial small ribosomal ...S18mt-c / 28S ribosomal protein S18-1 / mitochondrial / MRP-S18-1 / Mitochondrial small ribosomal subunit protein bS18c / Mitochondrial small ribosomal subunit protein bS18m


Mass: 15876.786 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y3D5
#23: Protein 28S ribosomal protein S21, mitochondrial / MRP-S21 / S21mt / Mitochondrial small ribosomal subunit protein bS21m


Mass: 10806.689 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82921
#24: Protein 28S ribosomal protein S22, mitochondrial / S22mt / Mitochondrial small ribosomal subunit protein mS22


Mass: 41337.316 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82650
#25: Protein 28S ribosomal protein S23, mitochondrial / S23mt / Mitochondrial small ribosomal subunit protein mS23


Mass: 21805.664 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y3D9
#26: Protein 28S ribosomal protein S25, mitochondrial / S25mt / Mitochondrial small ribosomal subunit protein mS25


Mass: 20146.428 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P82663
#27: Protein 28S ribosomal protein S26, mitochondrial / S26mt / 28S ribosomal protein S13 / mitochondrial / S13mt / Mitochondrial small ribosomal subunit protein mS26


Mass: 24259.820 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9BYN8
#28: Protein 28S ribosomal protein S27, mitochondrial / S27mt / Mitochondrial ribosomal protein S27 / Mitochondrial small ribosomal subunit protein mS27


Mass: 47669.262 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q92552
#29: Protein 28S ribosomal protein S28, mitochondrial / S28mt / 28S ribosomal protein S35 / mitochondrial / S35mt / Mitochondrial small ribosomal subunit protein bS1m


Mass: 20878.846 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y2Q9
#30: Protein 28S ribosomal protein S29, mitochondrial / S29mt / Death-associated protein 3 / DAP-3 / Ionizing radiation resistance conferring protein / ...S29mt / Death-associated protein 3 / DAP-3 / Ionizing radiation resistance conferring protein / Mitochondrial small ribosomal subunit protein mS29


Mass: 45634.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P51398
#31: Protein 28S ribosomal protein S31, mitochondrial / S31mt / Imogen 38 / Mitochondrial small ribosomal subunit protein mS31


Mass: 45391.473 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q92665
#32: Protein 28S ribosomal protein S33, mitochondrial / S33mt / Mitochondrial small ribosomal subunit protein mS33


Mass: 12657.776 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y291

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Protein , 6 types, 6 molecules 34578a

#3: Protein Aurora kinase A-interacting protein / AURKA-interacting protein / 28S ribosomal protein S38 / mitochondrial / MRP-S38 / Mitochondrial ...AURKA-interacting protein / 28S ribosomal protein S38 / mitochondrial / MRP-S38 / Mitochondrial small ribosomal subunit protein mS38


Mass: 22395.326 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NWT8
#4: Protein Pentatricopeptide repeat domain-containing protein 3, mitochondrial / 28S ribosomal protein S39 / mitochondrial / MRP-S39 / Mitochondrial small ribosomal subunit protein ...28S ribosomal protein S39 / mitochondrial / MRP-S39 / Mitochondrial small ribosomal subunit protein mS39 / Transformation-related gene 15 protein / TRG-15


Mass: 78648.547 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q96EY7
#5: Protein Dimethyladenosine transferase 1, mitochondrial / Mitochondrial 12S rRNA dimethylase 1 / Mitochondrial transcription factor B1 / h-mtTFB / h-mtTFB1 / ...Mitochondrial 12S rRNA dimethylase 1 / Mitochondrial transcription factor B1 / h-mtTFB / h-mtTFB1 / hTFB1M / mtTFB1 / S-adenosylmethionine-6-N' / N'-adenosyl(rRNA) dimethyltransferase 1


Mass: 39600.953 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: Q8WVM0, Transferases; Transferring one-carbon groups; Methyltransferases
#6: Protein Methyltransferase-like protein 17, mitochondrial / False p73 target gene protein / Methyltransferase 11 domain-containing protein 1 / Protein RSM22 ...False p73 target gene protein / Methyltransferase 11 domain-containing protein 1 / Protein RSM22 homolog / mitochondrial


Mass: 50807.547 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: Q9H7H0, Transferases; Transferring one-carbon groups; Methyltransferases
#7: Protein Malonyl-CoA-acyl carrier protein transacylase, mitochondrial / MCT / Mitochondrial malonyl CoA:ACP acyltransferase / Mitochondrial malonyltransferase / [Acyl- ...MCT / Mitochondrial malonyl CoA:ACP acyltransferase / Mitochondrial malonyltransferase / [Acyl-carrier-protein] malonyltransferase


Mass: 43019.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: Q8IVS2, [acyl-carrier-protein] S-malonyltransferase
#33: Protein GTPase Era, mitochondrial / H-ERA / hERA / Conserved ERA-like GTPase / CEGA / ERA-W / ERA-like protein 1


Mass: 48413.941 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75616

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RNA chain , 1 types, 1 molecules A

#8: RNA chain 12S mitochondrial rRNA


Mass: 306449.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 1858624182

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Non-polymers , 8 types, 38 molecules

#34: Chemical ChemComp-SF4 / IRON/SULFUR CLUSTER


Mass: 351.640 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Fe4S4 / Feature type: SUBJECT OF INVESTIGATION
#35: Chemical ChemComp-SAM / S-ADENOSYLMETHIONINE


Mass: 398.437 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C15H22N6O5S / Feature type: SUBJECT OF INVESTIGATION
#36: Chemical
ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: K
#37: Chemical...
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 27 / Source method: obtained synthetically / Formula: Mg
#38: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#39: Chemical ChemComp-FES / FE2/S2 (INORGANIC) CLUSTER


Mass: 175.820 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Fe2S2
#40: Chemical ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Comment: ATP, energy-carrying molecule*YM
#41: Chemical ChemComp-GDP / GUANOSINE-5'-DIPHOSPHATE


Type: RNA linking / Mass: 443.201 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H15N5O11P2 / Comment: GDP, energy-carrying molecule*YM

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Details

Has ligand of interestY

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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 mitochondrial small subunit assembly intermediate, State B
Type: RIBOSOME / Entity ID: #1-#33 / Source: NATURAL
Molecular weightValue: 1 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 64000 X / Nominal defocus max: 1800 nm / Nominal defocus min: 700 nm
Specimen holderSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 51 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 47037

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Processing

EM software
IDNameVersionCategory
2SerialEMimage acquisition
4Gctf1.18CTF correction
7UCSF Chimeramodel fitting
8Coot0.9.5model fitting
10PHENIX1.19model refinement
11RELION3.1.1initial Euler assignment
12RELION3.1.1final Euler assignment
13RELION3.1.1classification
14PHENIX1.193D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 9109335
3D reconstructionResolution: 2.54 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 203950
Details: 12 focused maps calculated in RELION 3.1.1 were combined into a composite map using phenix.combine_focused_maps. Composite half maps were generated by combining each half map from focused refinements.
Symmetry type: POINT
Atomic model buildingSpace: REAL
Atomic model building

3D fitting-ID: 1 / Source name: PDB / Type: experimental model

IDPDB-IDPdb chain-IDAccession codeInitial refinement model-ID
16RW4

6rw4

6RW41
22C2N

2c2n

A2C2N2
36AAX

6aax

A6AAX3

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