7MQA

Cryo-EM structure of the human SSU processome, state post-A1

  • Classification: RIBOSOME
  • Organism(s): Homo sapiens
  • Mutation(s): No 

  • Deposited: 2021-05-05 Released: 2021-09-22 
  • Deposition Author(s): Vanden Broeck, A., Singh, S., Klinge, S.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), European Molecular Biology Organization (EMBO)

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Nucleolar maturation of the human small subunit processome.

Singh, S.Vanden Broeck, A.Miller, L.Chaker-Margot, M.Klinge, S.

(2021) Science 373: eabj5338-eabj5338

  • DOI: https://doi.org/10.1126/science.abj5338
  • Primary Citation of Related Structures:  
    7MQ8, 7MQ9, 7MQA, 7MQJ

  • PubMed Abstract: 

    The human small subunit processome mediates early maturation of the small ribosomal subunit by coupling RNA folding to subsequent RNA cleavage and processing steps. We report the high-resolution cryo–electron microscopy structures of maturing human small subunit (SSU) processomes at resolutions of 2.7 to 3.9 angstroms. These structures reveal the molecular mechanisms that enable crucial progressions during SSU processome maturation. RNA folding states within these particles are communicated to and coordinated with key enzymes that drive irreversible steps such as targeted exosome-mediated RNA degradation, protein-guided site-specific endonucleolytic RNA cleavage, and tightly controlled RNA unwinding. These conserved mechanisms highlight the SSU processome’s impressive structural plasticity, which endows this 4.5-megadalton nucleolar assembly with the distinctive ability to mature the small ribosomal subunit from within.


  • Organizational Affiliation

    Laboratory of Protein and Nucleic Acid Chemistry, The Rockefeller University, New York, NY 10065, USA.


Macromolecules

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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S18D [auth L3]116Homo sapiensMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S4, X isoformE [auth L4]263Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000198034 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S5F [auth L5]204Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000083845 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S6G [auth L6]249Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000137154 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S7H [auth L7]194Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000171863 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S8I [auth L8]208Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000142937 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S9J [auth L9]194Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000170889 
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S12K [auth LA]132Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000112306 
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S16L [auth LC]146Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000105193 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S11M [auth LD]158Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000142534 
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S24N [auth LF]133Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000138326 
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S28O [auth LG]69Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000233927 
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
WD repeat-containing protein 75P [auth LH]830Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000115368 
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleolar protein 11Q [auth LI]678Homo sapiensMutation(s): 0 
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 15 homologR [auth LJ]518Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000164338 
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
WD repeat-containing protein 43S [auth LK],
T [auth LL]
677Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000163811 
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
HEAT repeat-containing protein 1U [auth LM]2,144Homo sapiensMutation(s): 0 
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PHAROS:  Q9H583
GTEx:  ENSG00000119285 
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Entity ID: 21
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 4 homologV [auth LN]686Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000141076 
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Entity ID: 22
MoleculeChains Sequence LengthOrganismDetailsImage
Periodic tryptophan protein 2 homologW [auth LO]919Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000241945 
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Entity ID: 23
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 6 homologX [auth LP]597Homo sapiensMutation(s): 0 
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PHAROS:  Q9NYH9
GTEx:  ENSG00000108651 
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Entity ID: 24
MoleculeChains Sequence LengthOrganismDetailsImage
WD repeat-containing protein 3Y [auth LQ]943Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000065183 
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Entity ID: 25
MoleculeChains Sequence LengthOrganismDetailsImage
Transducin beta-like protein 3Z [auth LR]808Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000183751 
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Entity ID: 26
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 18 homologAA [auth LS]556Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000011260 
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Entity ID: 27
MoleculeChains Sequence LengthOrganismDetailsImage
WD repeat-containing protein 36BA [auth LT]951Homo sapiensMutation(s): 0 
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Entity ID: 28
MoleculeChains Sequence LengthOrganismDetailsImage
DDB1- and CUL4-associated factor 13CA [auth LU]445Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000164934 
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Entity ID: 29
MoleculeChains Sequence LengthOrganismDetailsImage
WD repeat-containing protein 46DA [auth LW]610Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000227057 
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Entity ID: 30
MoleculeChains Sequence LengthOrganismDetailsImage
Active regulator of SIRT1EA [auth LY]136Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000187051 
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Entity ID: 31
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar ribonucleoprotein protein IMP3FA [auth LZ]184Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000177971 
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Entity ID: 32
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar ribonucleoprotein protein MPP10GA [auth NA]681Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000124383 
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Entity ID: 33
MoleculeChains Sequence LengthOrganismDetailsImage
Something about silencing protein 10HA [auth NB]479Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000132467 
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Entity ID: 34
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleolar protein 7IA [auth ND]257Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000225921 
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Entity ID: 35
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S13JA [auth NF]151Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000110700 
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Entity ID: 36
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S14KA [auth NG]151Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000164587 
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Entity ID: 37
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleolar protein 6LA [auth NH]1,146Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000165271 
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Entity ID: 38
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosomal RNA-processing protein 7 homolog AMA [auth NI]280Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000189306 
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Entity ID: 39
MoleculeChains Sequence LengthOrganismDetailsImage
Probable dimethyladenosine transferaseNA [auth NL]313Homo sapiensMutation(s): 0 
EC: 2.1.1.183
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GTEx:  ENSG00000086189 
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Entity ID: 40
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S3aOA [auth NM]264Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000145425 
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Entity ID: 41
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S15aPA [auth NO]130Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000134419 
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Entity ID: 42
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S19QA [auth NP]145Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000105372 
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Entity ID: 43
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S27RA [auth NQ]84Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000177954 
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Entity ID: 44
MoleculeChains Sequence LengthOrganismDetailsImage
RRP12-like proteinSA [auth NR]861Homo sapiensMutation(s): 0 
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Entity ID: 45
MoleculeChains Sequence LengthOrganismDetailsImage
Probable ATP-dependent RNA helicase DHX37TA [auth NS]1,157Homo sapiensMutation(s): 0 
EC: 3.6.4.13
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GTEx:  ENSG00000150990 
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Entity ID: 46
MoleculeChains Sequence LengthOrganismDetailsImage
Ubiquitin-40S ribosomal protein S27aUA [auth NT]156Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000143947 
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Entity ID: 47
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S17VA [auth NU]135Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000182774 
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Entity ID: 48
MoleculeChains Sequence LengthOrganismDetailsImage
Exosome component 10WA [auth NV]885Homo sapiensMutation(s): 0 
EC: 3.1.13
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GTEx:  ENSG00000171824 
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Entity ID: 49
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleolar protein 56XA [auth SA]594Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000101361 
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Entity ID: 50
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleolar protein 58YA [auth SB]529Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000055044 
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Entity ID: 51
MoleculeChains Sequence LengthOrganismDetailsImage
rRNA 2'-O-methyltransferase fibrillarinAB [auth SD],
ZA [auth SC]
321Homo sapiensMutation(s): 0 
EC: 2.1.1
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GTEx:  ENSG00000105202 
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Entity ID: 52
MoleculeChains Sequence LengthOrganismDetailsImage
NHP2-like protein 1BB [auth SE],
CB [auth SF]
128Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000100138 
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Entity ID: 53
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-interacting protein 2DB [auth SG]475Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000114767 
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Entity ID: 54
MoleculeChains Sequence LengthOrganismDetailsImage
RNA 3'-terminal phosphate cyclase-like proteinEB [auth SH]373Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000120158 
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Entity ID: 55
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosome biogenesis protein BMS1 homologFB [auth SI]1,282Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000165733 
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Entity ID: 56
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosomal RNA small subunit methyltransferase NEP1GB [auth SJ],
HB [auth SK]
244Homo sapiensMutation(s): 0 
EC: 2.1.1
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GTEx:  ENSG00000126749 
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Entity ID: 57
MoleculeChains Sequence LengthOrganismDetailsImage
rRNA-processing protein FCF1 homologIB [auth SL]198Homo sapiensMutation(s): 0 
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Find proteins for Q9Y324 (Homo sapiens)
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GTEx:  ENSG00000119616 
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Entity ID: 58
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar ribonucleoprotein protein IMP4JB [auth SM]291Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000136718 
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Entity ID: 59
MoleculeChains Sequence LengthOrganismDetailsImage
Small subunit processome component 20 homologKB [auth SP]2,785Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000120800 
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Entity ID: 60
MoleculeChains Sequence LengthOrganismDetailsImage
Deoxynucleotidyltransferase terminal-interacting protein 2LB [auth SQ]756Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000067334 
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Entity ID: 61
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S23MB [auth SR]143Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000186468 
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